## Found 201 Documents (Results 1–100)

100
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### On Tutte polynomial expansion formulas in perspectives of matroids and oriented matroids. (English)Zbl 07527675

MSC:  05B35 05C31 52B40
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### Complete graph drawings up to triangle mutations. (English)Zbl 07526455

MSC:  05C62 05C10 68R10
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### Oriented matroid structures from realized root systems. (English)Zbl 1467.05026

MSC:  05B35 20F55 52B40
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### A counterexample to Las Vergnas’ strong map conjecture on realizable oriented matroids. (English)Zbl 1456.52029

MSC:  52C40 52B40 55R40
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### A universality theorem for stressable graphs in the plane. (English)Zbl 1464.52013

MSC:  52C25 52C40 52C35
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### The complete enumeration of 4-polytopes and 3-spheres with nine vertices. (English)Zbl 1455.52008

MSC:  52B11 05A15 52C40
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MSC:  52C40
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### Hyperfield Grassmannians. (English)Zbl 1401.05059

MSC:  05B35 52C40 14T05
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### Vectors of matroids over tracts. (English)Zbl 1400.05043

MSC:  05B35 52B40
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### The axiomatization of affine oriented matroids reassessed. (English)Zbl 1391.52034

MSC:  52C40 52C35
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### The Cohen-Macaulayness of the bounded complex of an affine oriented matroid. (English)Zbl 1385.05030

MSC:  05B35 52B40
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### COMs: complexes of oriented matroids. (English)Zbl 1381.05008

MSC:  05B35 52B40 52A20
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### On maximizing a monotone $$k$$-submodular function subject to a matroid constraint. (English)Zbl 1387.90226

MSC:  90C27 90C26 52C40
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### A counterexample to the extension space conjecture for realizable oriented matroids. (English)Zbl 1384.05064

MSC:  05B35 05B45 52B40
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### L-infinity optimization to linear spaces and phylogenetic trees. (English)Zbl 1362.92050

MSC:  92D15 52C40 05B35
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### A flag vector of a 3-sphere that is not the flag vector of a 4-polytope. (English)Zbl 1365.52012

MSC:  52B05 52B11 52B40
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### Sign variation, the Grassmannian, and total positivity. (English)Zbl 1355.05071

MSC:  05B35 52B40 14M15
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### Sign variation, the Grassmannian, and total positivity. (English. French summary)Zbl 1335.05220

Proceedings of the 27th international conference on formal power series and algebraic combinatorics, FPSAC 2015, Daejeon, South Korea, July 6–10, 2015. Nancy: The Association. Discrete Mathematics & Theoretical Computer Science (DMTCS). Discrete Mathematics and Theoretical Computer Science. Proceedings, 121-132 (2015).
MSC:  05E15 14M15 52B40 05B35

### Minimum ranks of sign patterns via sign vectors and duality. (English)Zbl 1326.15045

MSC:  15B35 15A03
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### Enumerating neighborly polytopes and oriented matroids. (English)Zbl 1370.52018

MSC:  52B11 52C40
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### Enzyme allocation problems in kinetic metabolic networks: optimal solutions are elementary flux modes. (English)Zbl 1412.92124

MSC:  92C42 92C45 92C37
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### Positroids, non-crossing partitions, and positively oriented matroids. (English. French summary)Zbl 1393.05068

Proceedings of the 26th international conference on formal power series and algebraic combinatorics, FPSAC 2014, Chicago, IL, USA, June 29 – July 3, 2014. Nancy: The Association. Discrete Mathematics & Theoretical Computer Science (DMTCS). Discrete Mathematics and Theoretical Computer Science. Proceedings, 655-666 (2014).
MSC:  05B35 05A17
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### Delaunay triangulations with disconnected realization spaces. (English)Zbl 1395.68314

Proceedings of the 30th annual symposium on computational geometry, SoCG ’14, Kyoto, Japan, June 8–11, 2014. New York, NY: Association for Computing Machinery (ACM) (ISBN 978-1-4503-2594-3). 163-170 (2014).
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### The Erdős-Szekeres problem for non-crossing convex sets. (English)Zbl 1298.52019

MSC:  52C10 52C30
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### Linear embeddings of $$K_{9}$$ are triple linked. (English)Zbl 1294.05063

MSC:  05C10 05B35 57M25
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### Mathematical chemistry and chemoinformatics. Structure generation, elucidation and quantitative structure. Property relationships. (English)Zbl 1309.92006

Berlin: De Gruyter (ISBN 978-3-11-030007-9/hbk; 978-3-11-025407-5/ebook). xxix, 491 p. (2014).
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### Qubits and oriented matroids in four time and four space dimensions. (English)Zbl 1372.81030

MSC:  81P45 52C45
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### Many neighborly polytopes and oriented matroids. (English)Zbl 1283.52013

MSC:  52B05 52C40 52B12
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### On the finite set of missing geometric configurations. (English)Zbl 1259.05032

MSC:  05B35 05B25
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### On convex polytopes in $$\mathbb R^{d}$$ containing and avoiding zero. (English)Zbl 1270.52016

MSC:  52B11 52A40
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### Constructing neighborly polytopes and oriented matroids. (English. French summary)Zbl 1417.52017

Proceedings of the 24th international conference on formal power series and algebraic combinatorics, FPSAC 2012, Nagoya, Japan, July 30–August 3, 2012. Nancy: The Association. Discrete Mathematics & Theoretical Computer Science (DMTCS). Discrete Math. Theor. Comput. Sci., Proc., 203-214 (2012).
MSC:  52B11 52C40
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### Eigenvectors for a random walk on a hyperplane arrangement. (English)Zbl 1242.52028

MSC:  52C35 60J10 52C40
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MSC:  52C40
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### The equivariant topology of stable Kneser graphs. (English. French summary)Zbl 1440.05073

Proceedings of the 23rd international conference on formal power series and algebraic combinatorics, FPSAC 2011, Reykjavik, Iceland, June 13–17, 2011. Nancy: The Association. Discrete Mathematics & Theoretical Computer Science (DMTCS). Discrete Math. Theor. Comput. Sci., Proc., 873-884 (2011).
MSC:  05C10 05C75 05C60
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### Triangulations of $$\Delta_{n-1} \times \Delta_{d-1}$$ and tropical oriented matroids. (English. French summary)Zbl 1366.52025

Proceedings of the 23rd international conference on formal power series and algebraic combinatorics, FPSAC 2011, Reykjavik, Iceland, June 13–17, 2011. Nancy: The Association. Discrete Mathematics & Theoretical Computer Science (DMTCS). Discrete Mathematics and Theoretical Computer Science. Proceedings, 717-728 (2011).
MSC:  52C40 05B35 52C35 14T05
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### A topological interpretation of the cyclotomic polynomial. (English. French summary)Zbl 1359.11084

Proceedings of the 23rd international conference on formal power series and algebraic combinatorics, FPSAC 2011, Reykjavik, Iceland, June 13–17, 2011. Nancy: The Association. Discrete Mathematics & Theoretical Computer Science (DMTCS). Discrete Mathematics and Theoretical Computer Science. Proceedings, 693-704 (2011).
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### Order types of convex bodies. (English)Zbl 1235.52004

MSC:  52A10 52C40 05C55
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### Combinatorial characterizations of $$K$$-matrices. (English)Zbl 1206.15023

MSC:  15B48 90C33 52C40
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MSC:  52C40
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### The positive circuits of oriented matroids with the packing property or idealness. (English)Zbl 1237.52019

Haouari, M. (ed.) et al., ISCO 2010. International symposium on combinatorial optimization. Papers based on the presentations at the symposium, Hammamet, Tunesia, March 24–26, 2010. Amsterdam: Elsevier. Electronic Notes in Discrete Mathematics 36, 287-294 (2010).
MSC:  52C40 05B35
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### Polynomial time recognition of uniform cocircuit graphs. (English)Zbl 1268.05189

Liebling, Thomas M. (ed.) et al., LAGOS’09 – V Latin-American algorithms, graphs, and optimization symposium. Papers from the symposium, Gramado, Brazil, November 3–7, 2009. Amsterdam: Elsevier. Electronic Notes in Discrete Mathematics 35, 29-34 (2009).
MSC:  05C85 05C20
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### Every non-Euclidean oriented matroid admits a biquadratic final polynomial. (English)Zbl 1224.52031

MSC:  52C40 52C35
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### A construction of isomorphism classes of oriented matroids. (English)Zbl 1194.92085

Klin, Mikhail (ed.) et al., Algorithmic algebraic combinatorics and Gröbner bases. Dordrecht: Springer (ISBN 978-3-642-01959-3/hbk; 978-3-642-01960-9/ebook). 229-249 (2009).
MSC:  92E10 05B35 05-04

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### The directed switching game on Lawrence oriented matroids. (English)Zbl 1180.91064

MSC:  91A43 05B35
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MSC:  05B35
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### Cubes and orientability. (English)Zbl 1225.52010

MSC:  52C40 05B35
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### The flow lattice of oriented matroids. (English)Zbl 1204.52022

MSC:  52C40 52B40 05B35

### The $$(2+2)$$-signature and the $$(1+1)$$-matrix-brane. (English)Zbl 1192.83059

MSC:  83E30 81T30
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### Fully optimal bases and the active bijection in graphs, hyperplane arrangements, and oriented matroids. (English)Zbl 1341.05023

Márquez, Alberto (ed.) et al., Proceedings of the 4th European conference on combinatorics, graph theory and applications, EuroComb’07, Seville, Spain, September 11–15, 2007. Amsterdam: Elsevier. Electronic Notes in Discrete Mathematics 29, 365-371 (2007).
MSC:  05B25 05C31 90C05
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### Linking systems and matroid pencils. (English)Zbl 1142.90474

MSC:  90C27 05B35 52C40
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MSC:  52C40
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### Homomorphisms of separoids. (English)Zbl 1291.05036

Hliněný, Petr (ed.) et al., 6th Czech-Slovak international symposium on combinatorics, graph theory, algorithms and applications, DIMATIA Center, Charles University, Prague, Czech Republic, July 10–16, 2006. Amsterdam: Elsevier. Electronic Notes in Discrete Mathematics 28, 461-468 (2007).
MSC:  05B35 05C60
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### Satisfiability problems in discrete geometry. (English)Zbl 1128.52013

Berichte aus der Mathematik. Aachen: Shaker; Darmstadt: TU Darmstadt, Fachbereich Mathematik (Dissertation 2006) (ISBN 978-3-8322-6108-5/pbk). 100 p. (2007).

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### Oriented matroids and complete-graph embeddings on surfaces. (English)Zbl 1105.52012

MSC:  52C30 52C40 05C10
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### A counting problem in linear programming. (English)Zbl 1113.90096

Alt, Frank B. (ed.) et al., Perspectives in operations research. Papers in honor of Saul Gass’ 80th birthday. Papers partly based on the presentations at the symposium “Operations research in the 21st Century. New York, NY: Springer (ISBN 0-387-39933-X/hbk). Operations Research/Computer Science Interfaces Series 36, 223-234 (2006).
MSC:  90C05

MSC:  52C35
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### Antisymmetric flows in matroids. (English)Zbl 1119.52017

MSC:  52C40 05B35
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### Retrieve a Sperner map from a Sperner matroid. (English)Zbl 1097.05011

MSC:  05B35 52C40 55N35
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### A characterization of cocircuit graphs of uniform oriented matroids. (English)Zbl 1109.52016

MSC:  52C40 05C10 05C75
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### On the bounded complex of an affine oriented matroid. (English)Zbl 1122.52010

MSC:  52C40 05B35
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### The odd–even invariant of an oriented matroid. (English)Zbl 1098.52006

MSC:  52C40 05B35
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### Computational oriented matroids. Equivalence classes of matrices within a natural framework. (English)Zbl 1120.52011

Cambridge: Cambridge University Press (ISBN 0-521-84930-6/hbk). xiii, 323 p. (2006).

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### Complete graph drawings up to triangle mutations. (English)Zbl 1171.05323

Kratsch, Dieter (ed.), Graph-theoretic concepts in computer science. 31st international workshop, WG 2005, Metz, France, June 23–25, 2005. Revised selected papers. Berlin: Springer (ISBN 3-540-31000-2/pbk). Lecture Notes in Computer Science 3787, 139-150 (2005).
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### There are no realizable $$15_4$$ and $$16_4$$-configurations. (English)Zbl 1108.52025

MSC:  52C30 05B35
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### Gröbner and diagonal bases in Orlik-Solomon type algebras. (English)Zbl 1114.05020

MSC:  05B35 52C35 14F40
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### Non-stretchable pseudo-visibility graphs. (English)Zbl 1101.68736

MSC:  68R10 52C40
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### Object and image indexing based on region connection calculus and oriented matroid theory. (English)Zbl 1099.68126

MSC:  68U05 68T10 68T45
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### Oriented matroids and associated valuations. (English)Zbl 1059.05031

MSC:  05B35 52C40
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### Intersection and linking numbers in oriented matroids. (English)Zbl 1071.52020

MSC:  52C40 52B35 05B35
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### Bases, reorientations, and linear programming, in uniform and rank-3 oriented matroids. (English)Zbl 1053.05023

MSC:  05B35 90C05 90C57
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### Higher Bruhat orders, the Euler-Jacobi formula, and the Turnbull identity. (English. Russian original)Zbl 1053.05124

Russ. Math. Surv. 58, No. 4, 786-788 (2003); translation from Usp. Mat. Nauk 58, No. 4, 149-150 (2003).
MSC:  05E15
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### Sperner matroid. (English)Zbl 1039.05021

MSC:  05B35 52C40 55N35
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### Alexander duality in subdivisions of Lawrence polytopes. (English)Zbl 1038.52003

MSC:  52C40 52B11 52B20
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### Computing the face lattice of a polytope from its vertex-facet incidences. (English)Zbl 1015.52010

MSC:  52B20 52B55 52C40
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