Starshapedness and units changes in Leontief's input-output model / by Gerard SierksmaThe skeleton of the symmetric traveling salesman polytope is Hamiltonian / by Gerard SierksmaThe monotone symmetric traveling salesman polytope / by Gerard Sierksma and Hans BlikThe least-upper-bound for the Radonnumber of an Eckhoff-space / Gerard Sierksma and Jan Ch. BolandThe minimal domain finite extention of a convexity space / Gerard SierksmaCarathéodory- and Helly-numbers of Eckhoff-spaces / Gerard SierksmaExistence of and relationships between the Carathéodory, Helly, Radon and exchange numbers of convexity structures / Gerard SierksmaRelationships between Carathéodory, Helly, Radon and exchange numbers of convexity spaces / Gerard SierksmaNon-negative matrices : the open Lenntief model / Gerard SierksmaThe convex sum space and the Caratheodory, Helly, Radon, and Exchange numbers / Gerard SierksmaGeneralizations of Helly's theorem : open problems / Gerard SierksmaGeneralized radon partitions in convexity spaces / Gerard SierksmaAsymmetry on the symmetric traveling salesman polytope / by Gerard Sierksma and Gert A. Tijssen ; eds.: J.L. Bouma ... [et al.]Invariance of convex sets under linear transformations / by Gerard Sierksma, Valeriu Soltan, Tudor ZamfirescuAdjacency properties of the symmetric TSP polytope / by Gerard SierksmaJohann Bernoulli (1667-1748) : his ten turbulent years in Groningen / Gerard SierksmaRouting helicopters for crew exchanges on off-shore locations / Gerard Sierksma, Gert A. Tijssen, Henny de VosMultiplicity, degeneracy, and the strong complementary slackness theorem for linear programming / Gerard SierksmaFaces of diameter two on the Hamiltonian cycle polytope / Gerard Sierksma, Ruud H. Teunter, Gert A. TijssenThe mathematical sciences in Groningen / Gerard SierksmaThe dimension of the optimal face in linear programming / Gerard Sierksma and John R. ReayInterchange graphs and the Hamiltonian cycle polytope / Gerard SierksmaPartial monotonizations of Hamiltonian cycle polytopes : dimensions and diameters / G. Sierksma and R.H. TeunterGeometrical aspects of the limiting process of discrete-time periodic Markov Chains / Gerard Sierksma and Wilko SierksmaRouting helicopters for crew exchanges on off-shore locations / Gerard Sierksma and Gert A. TijssenDegeneracy degrees of constraint collections / G. Sierksma and G.A. Tijsen [i.e. Tijssen]Degeneracy degrees of constraint collections / Gerard Sierksma and Gert A. TijssenThe manufacturing of heavy weight cardboard / G. Sierksma and H.L.T. WandersEen kleine stap naar het oneindig grote : over exponentialiteit en logistiek / Gerard SierksmaSchaatsen top 100 / Gerard Sierksma en Huub Snoep ; [foto's: Huub Snoep ... et al. ; ill.: Gerard Sierksma]Voetbal top 100 : de 100 beste Nederlandse profvoetballers / Gerard Sierksma, Redactie Elf Voetbal ; [foto's: PRO Shots ... et al.]Axiomatic convexity theory and the convex product space / Gerard Sierksma
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Pyramidal tours and the traveling salesman problem / by Jack van der Veen, Gerard Sierksma, René van DalSmall and large TSP : two well-solvable cases of the traveling salesman problem / by René van Dal, Jack van der Veen, Gerard SierksmaSome remarks on the paper "Non-negative matrices; the open Leontief model" / Thomas T. Read and Gerard SierksmaThe 3-interchange graph and the symmetric traveling salesman polytope / by T. Stam and G. SierksmaOn the diameter of the traveling salesman polytope / by Gert A. Tijssen and Gerard Sierksma ; eds.: J.L. Bouma ... [et al.]On the diameter of the traveling salesman polytope / by Gert A. Thijssen and Gerard SierksmaSmall and large TSP: two well-solvable cases of the traveling salesman problem / by René van Dal, Jack van der Veen [and] Gerard SierksmaTransporting and mixing gasses with different qualities / by Hans ten Kate, Tom van der Hoeven, Gerard SierksmaThe symmetric circulant traveling salesman problem / by Jack A.A. van der Veen, René van Dal, Gerard SierksmaCombinatorial properties of nearly principal minors / by John S. Maybee, Gerard SierksmaScheduling of packaging lines in the process industry : recent trends / by Peter van Dam, Gerard Gaalman, Gerard SierksmaTransporting and mixing gasses with different qualities / Tom van der Hoeven, Hans ten Kate, Gerard SierksmaBalinski-Tucker simplex tableaus : dimensions, degeneracy degrees, and interior points of optimal faces / Gert A. Tijssen and Gerard SierksmaBalinski-Tucker simplex tableaus : dimensions, degeneracy degrees, and interior points of optimal faces / Gert A. Tijssen and Gerard SierksmaScheduling packaging lines in the process industry : designing and applying a model for the pre-scheduling level / P. van Dam, G.J.C. Gaalman and G. SierksmaDetermining tolerances for the traveling salesman problem : a survey / Edo S. van der Poort, Gerard Sierksma, Jack A.A. van der VeenThe data-correcting algorithm for supermodular functions, with applications to quadratic cost partition and simple plant location problems / Boris Goldengorin ... [et al.]Decomposed versus integrated control of a one-stage production system / A.L.A. Broersma, G. Sierksma and J. WijngaardDecomposed versus integrated control of a one-stage production system / A.L.A. Broersma, G. Sierksma and J. WijngaardSensitivity analysis of the greedy heuristic for binary knapsack problems / D. Ghosh, N. Chakravarti and G. SierksmaOn the complexity of determining tolerances for →e⇋-optimal solutions to min-max combinatorial optimization problems / D. Ghosh and G. SierksmaConvexities related to path properties on graphs; a unified approach / M. Changat, H.M. Mulder and G. SierksmaComplete local search with memory / D. Ghosh and G. SierksmaEquivalent instances of the simple plant location problem / B. Goldengorin, D. Ghosh and G. SierksmaBranch and peg algorithms for the simple plant location problem / B. Goldengorin, D. Ghosh and G. SierksmaBranch and peg algorithms for the simple plant location problem / Boris Goldengorin, Diptesh Ghosh, Gerard SierksmaThe composition of semi finished inventories at a solid board plant / H.L.T. Wanders, G.J.C. Gaalman and G. SierksmaConvexities related to path properties on graphs / Manoj Changat, Henry Martyn Mulder, & Gerard SierksmaSensitivity analysis of the greedy heuristic for binary knapsack problems / D. Ghosh, N. Chakravarti and G. SierksmaOn the complexity of determining tolerances for →e⇋-optimal solutions to min-max combinatorial optimization problems / D. Ghosh and G. SierksmaConvexities related to path properties on graphs; a unified approach / M. Changat, H.M. Mulder and G. SierksmaComplete local search with memory / D. Ghosh and G. SierksmaEquivalent instances of the simple plant location problem / B. Goldengorin, D. Ghosh and G. SierksmaCombinatorial optimization tolerances calculated in linear time / B. Goldengorin and G. SierksmaCombinatorial optimization tolerances calculated in linear time / Boris Goldengorin and Gerard SierksmaTour de France top 100 : de beste Tourrenners aller tijden / Dick Heuvelman, Frans van Schoonderwalt, Gerard Sierksma ; [foto's: Archief Sport-Express]Tour de France top 100 : de beste Tourrenners aller tijden / Dick Heuvelman, Frans van Schoonderwalt, Gerard Sierksma ; [foto's: Archief Sport-Express]Using tennis rankings to predict performance in upcoming tournaments