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A Tverberg type theorem for matroids

Bárány, I; Kalai, G; Meshulam, R; (2017) A Tverberg type theorem for matroids. In: Loebl, M and Nešetřil, J and Thomas, R, (eds.) A Journey Through Discrete Mathematics: A Tribute to Jiří Matoušek. (pp. 115-121). Springer: Cham, Switzerland. Green open access

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Abstract

Let b(M) denote the maximal number of disjoint bases in a matroid M. It is shown that if M is a matroid of rank d+1, then for any continuous map f from the matroidal complex M into the d-dimensional Euclidean space there exist t \geq \sqrt{b(M)}/4 disjoint independent sets \sigma_1,\ldots,\sigma_t \in M such that \bigcap_{i=1}^t f(\sigma_i) \neq \emptyset.

Type: Book chapter
Title: A Tverberg type theorem for matroids
ISBN-13: 9783319444789
Open access status: An open access version is available from UCL Discovery
DOI: 10.1007/978-3-319-44479-6_5
Publisher version: https://doi.org/10.1007/978-3-319-44479-6_5
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Mathematics
URI: https://discovery.ucl.ac.uk/id/eprint/1503480
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