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P v NP Problem Africa Solution
Dedekind-Cut TSP Intractability Barrier Crossing
Lemba D. Nyirenda, Ph.D.
c/o Department of Electrical & Electronic Engineering
Overview
This research paper presents a positive definite settlement of the P versus NP problem using the Dedekind-Cut TSP as the representative candidate of problems in the NP-Class in accordance with Cook’s theorem.
The three dimensions for the TSP solution metric space are NI ( ordered n-source node index set), NJ (ordered n-terminal node index set ), and ND (n Dedekind-cut weight well-ordering index set). First, the TSP 2D nodal weight matrix is transformed into the 3D Dedekind-cut-value weight matrix VB[NI x NJ x ND (free)] by applying the Dedekind-Cantor real number line axiom to each of the n row-weights functional groups and well-ordering NI and NJ. The nodal row-weights functional group is analogous to the Alkene carbon-carbon double bond functional group in Organic Chemistry. Second, VB is transformed into VC[NI x NJ x ND (free)] metric space by associating the D-cut variable with the source-node to terminal-node ratio. Third, VC is transformed into VD[ND x NI x NJ (free)] metric space by well-ordering ND and NI.
VD is the left solvable group-theoretic 3D Dedekind-cut-value periodic table. VC is the right intractable graph-theoretic 3D Cantor’s array. The periodic table has n horizontal Dedekind-cut sets covering the n-source node functional groups, and n vertical nodal functional groups covering the n Dedekind-cut sets.
The D1-Cut link set in VD provides PBXb(nxb,nyb) and PBYb(nxb,nyb) as the D1-Path composition factor base sets for the submodular optimal TSP solution. Here nxb is the number of acyclic-head factors, and nyb is the number of singleton cyclic-tail factors in the minimal set of D1-Path maximal length chains.
The TSP optimal solution submodular D1-Path-Factors fold into a polarized min nd2+ max-overlap linear span-tree circle isomorphic to a linear programme 2D corner point convex polygon. The D1-Path-Factor periodic table sections are crosslinked by horizontal Dedekind-cut terminal-node factor groups having diene-like and allene-like cumulated polarization. This is analogous to the isomer of minimum heat of hydrogenation in alkene chemistry.
The TSP D1-Path-Factor folding is such that: the optimal value is in the proximity of the D2-Cut value; the optimal TSP solution has hyperconjugate D1-Path-Factors ranging from nyb to nxb+1; and the optimal TSP link-set composition series cumulatively cluster together across the Dedekind-cut sets from k-1/ k to n/n. Thus 50 to 100 percent of the optimal TSP link-set band together in the D1+D2 cut sets independent of n the network size. These characteristics make the TSP a P-Complete solvable decision problem represented by the Dedekind-Cut TSP mathematical programme in accordance with the composition series solvability theorem and the Jordan-Holder subnormal series theorem in Group Theory.
The TSP mathematical programme is patterned on the protein folding problem and has been developed from a connected body of Cross Field Concepts from ten branches of mathematics, computer science, operations research and management science, organic and alkene chemistry, and molecular biology over a period of 23 years.
Summary of results of ten case studies are presented including two fully solved examples for n=5. Thus for the TSP, P=NP. This is demonstrated by solving the Dedekind-Cut TSP Mathematical Programme decision problem modeled as the ‘forward optimality conditions’: Dedekind-cut TSP analysis problem, and the ‘reverse cumulated-polarization objective function’: Dedekind-cut TSP synthesis problem. Thereby crossing the TSP intractability barrier. Therefore, by Cooks theorem: since the TSP is P=NP, then all NP Class problems are P=NP.
Indexing Terms: P=NP, Dedekind-Cantor real number axiom; D-cut travelling salesman problem, protein folding problem, minimum value spanning tree problem, linear spanning tree-circle, submodular mathematical programme, TSP decision problem, discrete optimization, Dedekind-cut metric space, submodular algebra, combinatorial intractability.
1. Introduction
1.1 P versus NP Problem
The P versus NP Problem is one of the seven millennium prize problems for which the Clay Mathematics Institute announced the US$7 million prize fund in 2000. The seven open problems include: the Birch and Swinnerton-Dyer Conjecture the Hodge Conjecture, the Navier-Stokes Equation, the P versus NP Problem, the Poincare Conjecture, the Riemann Hypothesis, and Quantum Yang-Mills Theory.
In 1970, Stephen Cook, as a graduate student at the
Here, P stands for polynomial and NP denotes nondeterministic polynomial. This terminology derives from the fact that problems in the NP Class are non-deterministically polynomial-time solvable. In order to qualify for the Class P, a decision problem must actually be resolvable in polynomially-bounded time by a computer. The Class NP includes the decision problem versions of virtually all the widely studied discrete optimization problems, and its subset Class P contained all those that have been conquered with well-bounded, constructive algorithms. The Class P is the set of all problems admitting algorithms of polynomial time complexity.
The best algorithms for NP-hard problems known, have an exponential worst-case time complexity. However, for many NP-hard optimization problems it can be shown that efficient absolute approximation algorithms exist if and only if P=NP. This would mean that the computational intractability barrier would have been crossed. The intractability problem, began as a failure of the human mind when faced with the possibility that a full understanding of the enumerated solution spaces of complex phenomena in many natural situations will take more time than we spend on their analysis, even if many powerful super computers in a multidimensional cosmic cube configuration (Jenkins, 1986) are networked worldwide through the internet. (Barrow, 1998) Therefore, the computational intractability of combinatorial sequences of large connected networks remains to be one of the most formidable impossibility limits. Thereby making the combinatorial intractability barrier as one of the greatest “computational impossibility limit” in the limits of science and the science of limits (Barrow,1998).
The family of NP-Hard problems includes all the problems that have frustrated discrete optimizers for decades, such as: travelling salesman (directed and undirected Hamiltonian cycle), graph-colouring, precedence constrained scheduling, parallel-processor scheduling, knapsack, set covering/packing/portioning, various fixed charge models, and 0-1 integer/mixed-integer programming, Dial-a-Ride Problem (Cordeau, 2006), and Duchenne et al, 2007). These problems are generally referred to as intractable or NP-Hard even in the special 0-1 integer mathematical programme formulation (Cordeau, 2006; Duchenne et al, 2007) , because it would take a prohibitively long time to solve large problems by the fastest computer program that would be written.
1.2 Clay Maths Challenge
Problems such as the TSP that are both NP-Hard and members of the NP Class are called NP-Complete. Therefore, if the status of any member of the NP-Complete Class is resolved. Then the NP-Complete problem of interest will also be resolved.
So far there is no known polynomial time algorithm for solving any NP problem quickly, including the TSP. This has led to the P¹NP conjecture. Nevertheless, a conjecture, even a widely held one such as the P¹NP conjecture, is not a proof. (Parker, et al., 1988; Sommer, et al., 1988; Balas, et al., 2001)
As a result, the Clay Mathematics Institute of the
1.3 Combinatorial TSP intractability barrier Crossing
Here we see that for the TSP, P=NP. Thereby crossing the combinatorial TSP intractability barrier as shown in Table 4.4. This is demonstrated by solving the TSP decision problem modeled as the forward: optimality Dedekind-cut TSP analysis problem, and the reverse: cumulated polarization Dedekind-cut TSP synthesis problem using the objective function and the three optimality conditions of the Dedekind-Cut TSP Mathematical Programme. (The ten detailed case study results are available on request upon making US$100 research contribution to lembanyirenda@gmail.com per case in Table 4.4).
The crossing of the combinatorial TSP intractability barrier is demonstrated by the results of the ten case studies presented together with the two fully solved examples for n=5 and n=17 from TSPLIB95. The minimum value TSP Solution set is embedded in the ‘D1-Path-Factor Cumulated Polarization Linear Span-tree Envelop’ as shown in Table 5 and 6 of appendix 3 for Case 8-n17 asymmetric TSP example.
Since for the TSP P=NP, a representative NP Class problem; then by Cooks theorem all decision and optimization problems in the NP Class are P=NP.
2. TSP Analysis Problem
2.1 D-Cut TSP 3D metric spaces
Let: WIJ(dk) be the Dedekind-cut weight measure for one directed linear-link connecting nodes (I and J) ; NI[n] = {I = 1 to n} be the source-node well-ordering index set.; and NJ[n] = {J = 1 to n} be the terminal-node well-ordering index set; and ND[dn] = { d1 to dn} be the Dedekind-cut nodal-weight well-ordering index set provided by the Dedekind-Cantor real number line axiom (Davis,1982).
Then the 2D network weight matrix VA[NI[n] x NJ[n]] can be transformed into a 3D Dedekind-cut (D-Cut) fully-ordered periodic table FOPT [DC[n] x FG[n]] = VD[ND[n] x NI[n] x NJ[n](free)].
The VD metric space provides: n-horizontal D-Cut groups, namely DC(NI) = {DC1[nd1], DC2[nd2], ··· , DCK[ndk] , ··· ,
DCn-1[ndn-1] , DCn[ndn] }; and n-vertical functional groups: FG(ND) = { FG1[n], FG2[n], ··· , FGI[n] , ···,
FGn-1[n], FGn[n]} as shown in Table 3.4 of Appendix 2.
“A pictorial representation of a Dedekind-cut corresponds to a straight line along which all the positive rational numbers are marked in their natural order. Dividing this line into two parts such that the part containing the smaller rational numbers contains no greatest provides a picture of a cut.” (Körner, et al.,1972)
2.2 TSP Group Theoretic Solvability
The question that arises : Does the VD metric space provide a P-complete choice function for the TSP optimal solution set (H*[n]) as it does for the Spanning Tree Problem (STP)? The answer is YES. This is because the Dedekind-Cut H*[n] set in VD[ND x NI x NJ(free)] = FOPT [DC[n] x FG[n]] is a solvable group having D-Cut subnetwork composition series satisfying the Group Theory Solvability theorem (Baumslag et al., 1968), such that:
for k=1 to n:
(1) 0/1 < 1/2 < 2/3 < · · · < k-1 /k < · · ·< n-1/n < n/n
(2) G*Æ[ng0*= 0]ÌG*1[ng1*] ÍG*2[ng2*]Í···ÍG*k[ngk*]Í··· ÍG*n-1[ngn-1*]Í G*n[ngn*]
(3) [ng0*= 0]/n < [ng1*]/n £[ng2*]/n £ ··· £ [ngk*]/n £··· £ [ngn-1*]/n £ [ngn*]/n =[n]/n
(4) [VDC0 = 0] < VDC1* <VDC2* < VDC3* < ··· < VDCk *< ··· < DCn-1* < VDCn*
(5) [VDC0 = 0] < VDC1 <VDC2 < VDC3 < ··· < VDCk < ··· < VDCn-1 < VDCn
(6) kth order D-cut subnetwork factor:
G*k[ngk*] = G*k-1[ngk-1*] + D*k[ndk*]
G*n[ngn*] = H*[n] optimal TSP set
[ngn*]= [n] , optimal TSP set length
kth order composition series factor: ngk* = ngk-1* + ndk*
kth order D-cut set: D*k[ndk*] Ì Dk[ndk] Î DCk(NI)
optimal TSP set value: VDCn*= VH*[n]
kth order D-cut set value:VD*k[ndk*] < VDk[ndk] < VDCk(NI)
Here, the set S1 = { 0/1, 1/2, 2/3, · · ·,k-1/k , · · ·, n-1/n, n/n} is the element by element lower bound for the set of composition series ratios {ngk*/n, for k=1 to n} which are also well ordered by “<”. S1 is well-ordered by “<” relation only . The set S1 corresponds to the set of upper diagonal integer fractions in Cantor’s Array. (Kasner; et al., 1989)
The set S1 is derived from the adjusted factor set of the inverse digamma function additive Series. (Tuma,1989) The combinatorial TSP feasible sets are bounded by the gamma function multiplicative series of the factor set :
S2 = {1, 2, 3, · · ·,k , · · ·, n-1,n}. (Tuma,1989)
2.3 D-Cut TSP mathematical programme
The Dedekind-Cut TSP optimal solution characteristics can be summarized into a Linear Span-Tree Circle Mathematical Programme. The optimal TSP solution satisfies the submodular algebra objective function, subject to the three optimality conditions in the Dedekind-Cut Periodic Table domain. The three optimality conditions are: the Optimal-value D2-cut-value proximity inequality; the max-cumulated boundary D1-Path-Factor hyperconjugation inequality; and the optimal Dedekind-cut composition series clustering inequality.
The TSP optimal solution is constructed as a submodular D1-Path-Factor linear span-tree circle (LSC). The LSC is a crosslinked periodic table folding having cumulated nodal functional group boundary polarization similar to dienes and allenes in alkene chemistry.(Ege, 1984; Morrison, et al.,1973) It is constructed as a sequence of min nd2+ max-overlap submodular-divisions of max-cumulated hyperconjugate D1-Path-Factor tableaus. The number of D1-Path-Factors range from nyb to nxb+1. The optimal TSP solution satisfies the optimality conditions of the Dedekind-cut TSP mathematical programme as demonstrated in Section 2.3 and Section 4.3.
The TSP mathematical programme has been developed over a period of 23 years (1986-2009) using cross field concepts from mathematical programming (Gass, 1969; Hillier, et al.,1969; Rosen, 1999) , submodular algebra (Parker, et al., 1988; Chen,1990; Nyirenda,(1991) and principles which imply the Axiom of Choice in axiomatic set theory (Suppess, et al.,1972) , real analysis (Royden, et al., 1988; Boyer,1949; Körner, et al.,1972; Grattan-Guinnes, 1980), gamma and digamma functions (Tuma, et al., 1989), combinatorial and discrete mathematics (Cohen,1978; Stout ,1982; Rosen, 1999; Nemhauser, et al., 1988; Parker, et al., 1988), combinatorial geometry (Preparata, et al., 1985),topology (Hocking,et al.,1961; Coxeter, 1973); general topology (Lipschultz,1965) , graph theory (Diestel, 1990; Deo, 1974 ), group theory (Baumslag, et al., 1968), the periodic table and alkene chemistry (Masterton, et al., 1969; Ege, 1984; Morrison , et al.,1973) and molecular biology (Fraenkel, 1993; Freifelder,1985).
2.3.1 Submodular Algebra Formulation
The submodular algebra formulation of the optimal TSP solution is represented as a D1-Path linear span-tree circle (LSC) folding in the D-cut periodic table domain using the augmented FOPT (fully ordered) Tableau or POPT (partially ordered) Tableau D-Cut TSP mathematical programme:
Objective Function:
VH* [n] = min Value { VHD [n] }
H* [n] = min Value LSC
HD[n] = min nd2+
=min nd2+ [FOPT or POPT(PBXb[nxb,nyb]={ Px[nfx], x=1 to nxb}),(CumJD-maxoverlap Submodular Division (¸))]
or
= min nd2+[FOPT or POPT (PBYb[nxb,nyb]={ Py[nfy], y=1 to nyb}),(CumJD-maxoverlap Submodular Division (¸))]
Subject to:
(1) Optimal-value D2-Cut-Value proximity inequality
(VDC1[n] ) < (VDC2[n] = [VHD[n] ± D2 ] ) < (VDC3[n] )
(2) Cumulated Polarization D1-Path factor hyperconjugation inequality
(nyb ) £ nD1-Path-Factor(+)D £ (nxb+ 1 )
nCumJD = Total number of horizontally Cumulated (D,J) factor-groups
= nhJ (diene type) + nhx (Allene type)
(3) Dedekind-Cut Composition Series Clustering Inequality
k= 1 to n
(k-1)/k £ ngkD / n = [ (ngk-1D/n) + ( ndkD/n)] £ n /n
··· ··· ···
ngn-1D / n = [(ngn-2D/n) + ( ndn-1D/n)] = n /n
Here, the base index b=1. PBXb(nxb, nyb) is the minimal D1-Path base set composed of maximal length chain of (I/J d1) factors in the D1-Cut set DC1(NI) ={ WIJ,(I/J d1)} in FOPT (fully ordered) Tableau or POPT (partially ordered) . The maximal length chains are obtained using the submodular addition groupoid of the D1-cut set . PBXb(nxb, nyb) is reducible to PBYb(nxb, nyb) using the submodular division groupoid of subsets of D1-Paths having common singleton cyclic-tail-factors. Their construction is demonstrated in Table 3.5 in Appendix 2 (US$100 research contribution).
Here, nxb = number of acyclic-head-factors in PBXb and nyb= number of singleton cyclic-tail-factors in PBXb . PBXb(nxb, nyb) is the Acyclic-head-factor D1-Path base set, and PBYb(nxb, nyb) is the Cyclic-tail-factor D1-Path base set. They constitute the composition factor set for the optimal TSP solution.
2.3.2 Optimal value proximity Constraint
The optimal TSP link-set (H* [n]) clusters around the D1+D2 cut set composition series. This is independent of the network node size and irrespective of whether the D-cut sets are fully-ordered or partially-ordered in the VD periodic table. Therefore, the lower bounds and upper bounds on the total weight of the optimal TSP set value VH* [n] is given by the Optimal-value D2-cut-value proximity inequality.
VDC1 < (VDC2 = [VH* ± D2 ] ) < VDC3
Here the optimal TSP value is in the proximity of the threshold value VDC2 such that : WL = VDC1, the D1-Cut link-set value; WT = VDC2, the D2-Cut link-set value; and WU = VDC3 the D3-Cut link-set value in VD.
2.3.3 Cumulated Polarization Hyperconjugation Constraint
The optimal TSP solution forms a hyperconjugate D1- Path-Factor linear span-tree circle analogous to a linear programming 2D corner point convex polygon. The D1-Path-Factor tableaus are cross-linked through the cumulated polarization of the horizontal D-Cut J elements. Each cross-linked D1-Path-Factor tableau, in the linear span-tree circle, subtends a subset of vertical D-cut nodal functional groups providing horizontal d-cut (I/J dk) factor sets. The horizontal D-Cut J elements, in the vertical nodal functional groups, have {I1/J1da, ... , I2/J1db, … ,I1/J1dc, …, I2/J1dx : J1/J2d1} diene-like or {I1/J1dx, I2/J1dx, I1/J1dx, …, I2/J1dx: J1/J2d1} allene-like cumulated polalization at the boundary. Diene and allene double bond carbon structures are defined in alkene chemistry. (Masterton, et al., 1969; Ege, 1984; Morrison, et al.,1973)
The H* [n] linear span circle satisfies the cumulated D1-Path factor hyper-conjugation inequality:
nyb £ nHypD1-PathFactors £ (nxb + 1 )
Here, b = 1 is the base index; nxb> 0; and , nyb > 0 .
2.3.4 TSP Composition Series Clustering Constraint
The optimal TSP composition series cluster together in accordance with the Dedekind-cut choice inequality:
k-1 /k £ (ngk* = ngk-1* + ndk*)/n £ n/n presented in Table 3.4 in Appendix 2 (available on request upon making a US$100 research contribution to lembanyirenda@gmail.com).
The clustering inequality guarantees 50 to 100 percent of the optimal value link set to be included in D1+D2 Dedekind-cut sets in the fully or partially ordered periodic table. This is independent of the network node-set size n.
3. TSP Optimal Solution Linkages
3.1 Alkene Chemistry Linkages
In Alkene Chemistry the functional group is the carbon-carbon double bond. In a monotonically well ordered D-Cut-Value periodic table, each row-simplex in a nodal weight matrix VA[NIxNJ] becomes a vertical D-Cut-Value functional group in VD[NDxNIx NJ(free)], as demonstrated in Table 3.4 in Appendix 2(available on request upon making a US$100 research contribution to lembanyirenda@gmail.com). . Each row simplex is analogous to a period in Mendeleevs Periodic Table. (Masterton, et al., 1969)
The weight matrix VA[NI x NJ ] provides two sets of n nodal functional groups (NFG) or n-periods . These are: the row-wise {FGI[n]} set and the column-wise {FGJ[n]} set as shown in Table 3.1. The role of the row-wise functional group in VA[NI x NJ] is analogous to the Alkene carbon-carbon double bond functional group in Organic Chemistry. (Ege, 1984; Morrison, et al., 1973)
The D1-Path-Factor hyperconjugated structure of the TSP optimal solution is analogous to the most stable “Max-Overlap hyper-conjugated Alkene isomer” having the minimum heat of hydrogenation in the atomic periodic table. (Masterton, et al., 1969) The minimum energy isomer is made using the “Max-Overlap Principle” and is a hyperconjugated chain consisting of cumulated carbon double bond strings (allenes), conjugated carbon double bond strings (dienes), and single-isolated carbon double bond strings. (Ege, 1984; Masterton, et al., 1969; Morrison , et al.,1973)
Here, the first order Dedekind-cut linear path factors are analogous to the alkyl groups attached to the doubly-bonded carbon atoms. The greater the number of alkyl groups attached to the doubly-bonded carbon atoms the more stable the alkene. (Ege, 1984; Morrison , et al.,1973)
3.2 Linear Programming Linkages
The TSP optimal solution is a convex polygon whose sides consist of factors of D1-Path maximal chains and the corner points provide the intersection of the linear D1-Path boundary extreme points. The extreme points form higher order D1+ links in the linear spanning tree-circle. The convex polygon formed is similar to a two dimensional convex region of the constraint set of a Linear Programme. (Gass, 1969; Hillier, et al.,1969) The synthesis of the D1-path base set is demonstrated in Table 3.5. Thus the TSP becomes a linear programming problem of folding the maximal chain D1-Path factors into a hyperconjugate extreme point convex polygon or linear spanning cycle of minimum value. This is similar to the protein folding problem. (Fraenkel , 1993; Freifelder,1985)
3.3 LSC Space Construction Procedure
The data sources for the ten case studies presented are in appendix 1. The construction of VD from VA the TSP nodal weight matrix is demonstrated in Tables 3.1 to 3.4 in appendix 2. The fully ordered periodic table VD presents a P-Complete Dedekind-cut TSP solution space requiring: first, the construction of PBYb(nxb,nyb) the minimal D1-Path composition factor base set as shown in Table 3.5 in appendix 2; second, align the nodal functional group tableaus in VD to be in one-to-one correspondence with the linear D1-Path set to provide the max nd1 LSC as in Table 3.6 in appendix 2; third, arrange the D1-Path nodal functional group tableaus into factorized max-overlap cumulated polarization sequence envelop as in Table 3.7 in appendix 2 ; fourth, construct the cumulated min nd2+ Hyperconjugate D1-Path-Factor Linear Spanning-tree Circle TSP solution space satisfying the optimality conditions of the D-Cut TSP mathematical programme as in Table 3.7 in appendix 2(available on request upon making a US$100 research contribution to lembanyirenda@gmail.com); fifth, select the minimum total value LSC set as the optimal TSP solution set as shown in Table 3.7 in appendix 2. The related patented TSP solution methodology is summarized in appendix 3 (available on request upon making a US$100 research contribution to lembanyirenda@gmail.com).
4. Conclusion
4.1 Third missing TSP dimension
The discovery of ND, the third missing dimension of the TSP solution space, has made it possible to construct the TSP group theoretic periodic table in which 50-100 percent of the optimal TSP set clusters in the D1+D2 cut sets independent of the network node set size (n).
The significance of ND , the Dedekind-Cantor real number line, is analogous to the fourth dimension of time in the theory of relativity by Albert Einstein.
4.2 TSP Intractability Barrier Crossing
The construction of the TSP submodular algebra mathematical programme, for validating and constructing optimal TSP solutions in polynomial time, has provided for the first time a bridge for crossing the once impossible “Intractability Barrier” for the “enumeration required” Combinatorial TSP . The tractability of the Dedekind-cut TSP is demonstrated in part by the ten case study findings summarized in Tables 4.1 to 4.3 (available on request upon making a US$100 research contribution to lembanyirenda@gmail.com).
4.3 NP Class P Status
Here we see that for the TSP, P=NP. Thereby crossing the combinatorial TSP intractability barrier as shown in Table 4.4. This is demonstrated by solving the TSP decision problem modeled as the forward: optimality Dedekind-cut TSP analysis problem, and the reverse: cumulated polarization Dedekind-cut TSP synthesis problem using the objective function and the three optimality conditions of the Dedekind-Cut TSP Mathematical Programme.
The crossing of the combinatorial TSP intractability barrier is further clarified by the results of the ten case studies (n=4,5,6,6,8,8,16,17,33,67) presented together with the two fully solved examples for n=5 and n=17 from TSPLIB95. The minimum value TSP Solution set is embedded in the ‘D1-Path-Factor Cumulated Polarization Linear Span-tree Envelop’ as shown in Table 5 and 6 of appendix 3 for Case 8-n17 asymmetric TSP example .
Therefore, by Cooks theorem: since for the TSP, the representative NP Class problem, P=NP; then all decision and optimization problems in the NP Class are P=NP.
4.4 P versus NP Millennium Prize Problem
The Clay Mathematics Institute of the
Nevertheless, on 14th December, 2009 : a positive definite settlement of the P versus NP millennium prize problem is presented using the TSP as the representative candidate of problems in the NP-Class. The universal utility of the finding that P=NP for the TSP is the design and development of the Universal Travel-Connection Productivity Tool.
4.5 Universal Travel-Connection Productivity Tool
If one examines the everyday activities involving people and their vehicles, and all mobile living things . They execute their everyday business traveling round and round in circles touring source nodes and terminal nodes to fit various livelihood purposes at hand. The circular perimeter paths traversed in normal routine, alert route, emergency routine , disaster routine, revival routine, recovery routine and restoration routine may cover very small, small, large and/or very large geographical areas with varying tour cycles. All this cyclic traveling is being undertaken by traveling sales men and women from all walks of life ranging from children walking to school, parents driving their children to school , the traveling business man, the traveling postman, the traveling fireman, the traveling preacher-man, the traveling judge and the traveling tramp ship on high seas and future deep space exploration travel. This constitutes the universal traveling salesman problem (TSP).
All TSP travel is oftentimes done routinely as random walk tours. These walks because of “poverty action thinking” , as opposed to “prosperity action thinking”, are carried out at unmonitored great costs in terms of expended scarce and valuable resources of time, money, strength, talents and relationships every minute throughout the world.
Therefore, if random walks of life were transformed into productive walks that are based on a “Universal Travel Productivity (UTP) tool” which promotes “universal prosperity action thinking” in executing everyday cyclic livelihood business connections and travel. Then, the discovery of such a UTP tool , would transform the random walk madness of the rich and poor peoples of the world into peaceful productive walks. Such productive walks would be engineered to be performed within the budget envelop of the available , scarce and valuable resources of time, money, strength, talents and relationships throughout the world every minute.
The needed Universal Travel-Connection Productivity (UTCP) tool is the “ Network Dedekind-Cut-Value Periodic Table” of quantified weights and measures of time, money, strength, talents and relationships to be expended on inter-nodal paths traversed in normal routine, alert route, emergency routine , disaster routine, revival routine, recovery routine and restoration routine. The “ Network Dedekind-Cut-Value Periodic Table” is analogous to the “ Atomic Weight Periodic Table” created by Mendeleev in 1870. (Masterton, et al., 1969).
The UTP tool would be used very effectively and efficiently in the UPEDR (Universal Productivity Emergency Disaster Recovery) meter cluster arrays lifelines systems disaster protection, emergency disaster preparedness logistics planning, and during search and rescue missions during major catastrophic manmade disasters and/or natural disasters. (Nyirenda, 1999-2008; UN ISDR, 2005; Appendix 3)
Acknowledgement
I am greatly indebted to the late Professor Emeritus Roland Schinzinger, of the University of California at Irvine, for having guided and funded the initial stages of the research work and for the unwavering familial support of Dr Drinah Nyirenda, of the University of Zambia, through the provision of financial resources and encouragement over the 20 years of this research work.
Biography
Lemba D. Nyirenda obtained his: bachelor of engineering degree from the
References
Aho, A.V.,J.E.Hopcroft and J.D.Ullman (1974). The Design and Analysis of Computer Algorithms, page 49-54, 363-400.Addison-Wesley, Reading
Balas, Egon and Neil Simonetti. “Linear Dynamic Programming Algorithms for New Classes of Restricted TSPs: A computational Study”. INFORMS Journal on Computing, Vol 13, No. 1, Winter 2001. page 56-75.
Barrow, John D., 1998. Impossibility: The Limits of Science and the Science of limits, pages 8-19, 100-107, 208, 221-228.
Baumslag, Benjamin and Bruce Chandler (1968). Group Theory, pages 107-115, 158-166. McGraw Hill Schaum’s Outline Series.
Boyer, Carl B. (1949). The History of the Calculus and its Conceptual Development, pages 33, 291.
Cayley, A. (1889). A theorem on trees. Quart. J. Math. 23 376-378.
Cohen, Daniel I.A. (1978). Basic Techniques of Combinatorial Theory, pages 13-18, 38, 235,154-157. John Wiley & Sons,
Cordeau, Jean-Francois. (2006). A Branch-and-Cut Algorithm for the Dial-a-Ride Problem. Vol. 54. No. 3, May-June 2006, pp. 573-586.
Coxeter, H.S.M.(1973). Regular Polytopes, pages 118-121.
Davis, Martin. 1982. Computability and Unsolvability, pages 69 - 70, 199 - 200.
Deo, Narsingh (1974). Graph Theory with Applications to Engineering and Computer Science, pages 1-11, 52 - 57 , 112 - 135 , 314 - 316. Prentice Hall,
Duchenne,E., G. Laporte, F. Semet. (2007). The Undirected m-Peripatetic Salesman Problem: Polyhedral Results and New Algorithms. Vol. 55, No. 5, September-October 2007, pp. 949-965.
Ege, Seyhan N. 1984. Organic Chemistry, pages 12-13, 21, 558. D.C. Health and Co.
Rothlauf, F. (2009). On Optimal Solutions for the Optimal Communication Spanning Tree Problem. Operations Research, Vol 57, No. 2. March-April, pp.413-425.
Freifelder, David (1985). Essentials of Molecular Biology, pages 17, 47-59. Jones and
Gass, Saul I. 1969. Linear Programming Methods and Applications , page 32-33,49-88. McGraw-Hill Kogakusha, Ltd (
Grattan-Guinnes, I. Editor (1980). History and Phylosopy of Logic, pages 219, 238-239.
Hillier, F.S. and G. J. Lieberman (1990). Introduction to Operations Research, pages 29-43,59-76.Fifth edition. McGra Hill.
Hocking, John G. and Gail S. Young. 1961. Topology, pages 1-3, 193-199, 203-213.
Kasner, Edward and James R. Newman. 1989. Mathematics and the Imagination, pages 48 – 49, 265, 276. Microsoft Press,
Körner, Stephan. 1968. The Phylosophy of Mathematics: An Introductory Essay, pages 187-191.
Lawler, E. L. And J. K. Lenstra, A.H.G. Rinnooy
Lipschutz, Seymour. 1965. General Topology, Pages 1-8 , 48-51, 66-72, 87-90, 180-193 .Graw Hill Schaum’s Outline Series
Masterton, W. L., and E. J. Slowinski. 1969. Chemical Principles, second edition, pages 113-117, 152-153. W.B. Saunders Co.
Morrison , Robert T. and Robert N. Boyd. (1973). Organic Chemistry, page 1-11, 23, 36, 154-163, 177-185,219, 262-267, 440-448. Allyn and Bacon Inc.
Nemhauser, G. L. And L. A. Wosley. 1988. Integer and combinatorial Optimization, pages 83 - 43, 469-495, 659 - 719. John Wiley & Sons.
Nyirenda (a), L.D. (1991). Algebraic Network Protection and Restoration Logistics, pages 21-58, 109-127 Ph.D. dissertation, University of California Irvine, Irvine, California, USA. University Microfilm International Dissertation Information Service, order number 9129104.
Nyirenda (b), Lemba D. (2004). “Travelling Salesman Problem Solution as a D-Cut Simplex Protein Folding Problem”., VLIR Inter-Discilinary Research.
Nyirenda (c), L.D. (2005). TSP Solvability and Computability Research Monograph, UNZA, Department of Electrical & Electronic Engineering,
Nyirenda (d), Lemba D. and Roland Schinzinger. (2003). “Traveling Salesman Problem Linear Path Spanning Tree Simplex Algorithm”. Presented August 2003 at EURO XVI International Meeting, Istanmbul , Turkey .
Nyirenda (e), Lemba D. and Roland Schinzinger. (2009). “Dedekind-Cut TSP Linear D1-Path Cumulated Corner Poit Polarization Revised Simplex Method”. The Zambian Engineer (Journal of the Engineeing Institution of Zambia) Volume 42, No. 1, January-February 2009, pp.30-37.
Nyirenda (f), Lemba D. , “TSP – STP Dedekind-Cut Network Choice Functions”. Lifelines Operations Research Paper.
Nyirenda (g), L.D. “Dedekind-Cut Network Pathset Submodular Division
TSP Simplex Algorithm”. Paper presented at the Joint EURO XV - INFORMS XXXIV International Meeting, July 14-17 ,1997
Nyirenda (h), L. D., “Algebraic Solution of 1856 Travelling Salesman Problem”. Lifelines Networks Research, Department of Electrical & Computer Engineering,
Nyirenda (i), L.D. and R. Schinzinger, “P- and NP-Completeness of the
Travelling Salesman Problem”. ORSA/TIMS Bulletin Number 34, San Francisco, p.70-TB9.1,1992.
Nyirenda (k), L.D. and R. Schinzinger, “Algebraic Network Solvability: Composition Series Constructive Proof and Topological Groupoids”.
Parker, R. Gary and Ronald L. Rardin. 1988. Discrete Optimization, pages 1 - 10, 23 - 48, 93-94.Academic Press, Boston (USA).
Phillips, Don T. and Alberto Garcia-Diaz. 1981. Fundamentals of Network analysis, pages 3-15,97-109. Prentice Hall.
Preparata, F. P. and M. I. Shamos (1985). Computational Geometry, pages 1-20. Springer-Verlag.
Diestel, Reinhard (1990). Graph Decompositions: A study in Infinite Graph Theory, pages xii-xiii, 5-47.
Rosen, H. Kenneth (Editor In Chief). 1999. Handbook of Discrete and Combinatorial Mathematics, pages 107-109, 676-687, 692-702, 959-962. CRC Press (
Royden, H.L. (1988). Real Analysis, pages 5-11, 72-74, 137-147, 171-189, 253-254. Mcmillan Publishing Company.
Sommer Halder R. and S. C. van Westrhenen. 1988. The Theory of Computability: Programs, machines, effectiveness and Feasibility, pages 337-353 , 394-417 .Addison-Wesley Publishers Ltd. (
Suppess, Patrick. 1972. Axiomatic Set Theory, pages 68 - 69, 74 - 75, 239 - 240, 250 - 253.
Tuma, Jan J. 1989. Handbook of Numerical Calculations in Engineering, pages 16, 27, 36, 40, 98.