Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Jorge Ramírez-Alfonsín"'
Publikováno v:
SIAM Journal on Discrete Mathematics
SIAM Journal on Discrete Mathematics, Society for Industrial and Applied Mathematics, 2019, 33 (1), pp.306-326. ⟨10.1137/17M115462X⟩
SIAM Journal on Discrete Mathematics, Society for Industrial and Applied Mathematics, 2019, 33 (1), pp.306-326. ⟨10.1137/17M115462X⟩
Let $D$ be a knot diagram, and let ${\mathcal D}$ denote the set of diagrams that can be obtained from $D$ by crossing exchanges. If $D$ has $n$ crossings, then ${\mathcal D}$ consists of $2^n$ diagrams. A folklore argument shows that at least one of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b109ba83409f78867945c57b144598f8
https://hal.archives-ouvertes.fr/hal-02049077/file/shadows.pdf
https://hal.archives-ouvertes.fr/hal-02049077/file/shadows.pdf
Publikováno v:
Proceedings of the American Mathematical Society
Proceedings of the American Mathematical Society, American Mathematical Society, In press, ⟨10.1090/proc/14498⟩
Proceedings of the American Mathematical Society, American Mathematical Society, In press, ⟨10.1090/proc/14498⟩
International audience; A fact closely related to the classical Erdos-Szekeres theorem is that cyclic arrangements are the only unavoidable simple arrangements of pseudolines: for each fixed m ≥ 1, every sufficiently large simple arrangement of pse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb63e832e35612fe73d81f2b5fb35761
https://hal.archives-ouvertes.fr/hal-02049473/document
https://hal.archives-ouvertes.fr/hal-02049473/document
Publikováno v:
Semigroup Forum
Semigroup Forum, Springer Verlag, 2017, 94 (1), pp.123-138. ⟨10.1007/s00233-016-9820-y⟩
idUS. Depósito de Investigación de la Universidad de Sevilla
instname
Semigroup Forum, Springer Verlag, 2017, 94 (1), pp.123-138. ⟨10.1007/s00233-016-9820-y⟩
idUS. Depósito de Investigación de la Universidad de Sevilla
instname
In this paper we use an elementary approach by using numerical semigroups (specifically, those with two generators) to give a formula for the number of integral points inside a right-angled triangle with rational vertices. This is the basic case for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7930b7cdf0478ec8ba5c4e827dc0e5fb
https://hal.archives-ouvertes.fr/hal-02049558/file/Triangle-1.pdf
https://hal.archives-ouvertes.fr/hal-02049558/file/Triangle-1.pdf
Publikováno v:
The Electronic Journal of Combinatorics
The Electronic Journal of Combinatorics, Open Journal Systems, 2015, 22 (2), ⟨10.37236/4811⟩
The Electronic Journal of Combinatorics, Open Journal Systems, 2015, 22 (2), ⟨10.37236/4811⟩
J.-P. Roudneff has conjectured that every arrangement of $n\ge 2d+1\ge 5$ (pseudo) hyperplanes in the real projective space $\mathbb{P}^d$ has at most $\sum_{i=0}^{d-2} \binom{n-1}{i}$ cells bounded by each hyperplane. In this note, we show the valid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44e34524950820c156708634615514a5
https://hal.archives-ouvertes.fr/hal-02049054/file/Roudneff'sconjectureforLOM.pdf
https://hal.archives-ouvertes.fr/hal-02049054/file/Roudneff'sconjectureforLOM.pdf
Leave nothing to chance. This cliche embodies the common belief that ran domness has no place in carefully planned methodologies, every step should be spelled out, each i dotted and each t crossed. In discrete mathematics at least, nothing could be
Autor:
Albar, Boris
Publikováno v:
Mathématique discrète [cs.DM]. Université Montpellier, 2014. Français
Study of minor closed graph and matroid classes: triangle density, colorings, rigidity and orientations.; Étude des classes de graphes et de matroïdes closes par mineur : densité de triangles, coloration, rigidité et orientations.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::694f1ea4c7b3100fa603cb0a195aa520
https://hal-lirmm.ccsd.cnrs.fr/tel-02078657
https://hal-lirmm.ccsd.cnrs.fr/tel-02078657