## Pavle V. M. Blagojević ; Benjamin Matschke ; Günter M. Ziegler - A tight colored Tverberg theorem for maps to manifolds (extended abstract)

dmtcs:2901 - Discrete Mathematics & Theoretical Computer Science, January 1, 2011, DMTCS Proceedings vol. AO, 23rd International Conference on Formal Power Series and Algebraic Combinatorics (FPSAC 2011) - https://doi.org/10.46298/dmtcs.2901
A tight colored Tverberg theorem for maps to manifolds (extended abstract)

Authors: Pavle V. M. Blagojević ; Benjamin Matschke ; Günter M. Ziegler

Any continuous map of an $N$-dimensional simplex $Δ _N$ with colored vertices to a $d$-dimensional manifold $M$ must map $r$ points from disjoint rainbow faces of $Δ _N$ to the same point in $M$, assuming that $N≥(r-1)(d+1)$, no $r$ vertices of $Δ _N$ get the same color, and our proof needs that $r$ is a prime. A face of $Δ _N$ is called a rainbow face if all vertices have different colors. This result is an extension of our recent "new colored Tverberg theorem'', the special case of $M=ℝ^d$. It is also a generalization of Volovikov's 1996 topological Tverberg theorem for maps to manifolds, which arises when all color classes have size 1 (i.e., without color constraints); for this special case Volovikov's proofs, as well as ours, work when r is a prime power.

Volume: DMTCS Proceedings vol. AO, 23rd International Conference on Formal Power Series and Algebraic Combinatorics (FPSAC 2011)
Section: Proceedings
Published on: January 1, 2011
Imported on: January 31, 2017
Keywords: equivariant algebraic topology,convex geometry,colored Tverberg problem,configuration space/test map scheme,group cohomology,[MATH.MATH-CO] Mathematics [math]/Combinatorics [math.CO],[INFO.INFO-DM] Computer Science [cs]/Discrete Mathematics [cs.DM]
Fundings :
Source : OpenAIRE Research Graph
• Advanced Techniques of Cryptology, Image Processing and Computational Topology for Information Security; Funder: Ministry of Education, Science and Technological Development of Republic of Serbia; Code: 174008
• Structured Discrete Models as a basis for studies in Geometry, Numerical Analysis, Topology, and Visualization; Funder: European Commission; Code: 247029