Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Florent Hivert"'
Autor:
Jean-Christophe Aval, Adrien Boussicault, Bérénice Delcroix-Oger, Florent Hivert, Patxi Laborde-Zubieta
Publikováno v:
Discrete Mathematics & Theoretical Computer Science, Vol DMTCS Proceedings, 28th... (2020)
We present a new definition of non-ambiguous trees (NATs) as labelled binary trees. We thus get a differ- ential equation whose solution can be described combinatorially. This yield a new formula for the number of NATs. We also obtain q-versions of o
Externí odkaz:
https://doaj.org/article/0d2c4d92d2b949ba99e8bf62b342493a
Autor:
Florent Hivert, Olivier Mallet
Publikováno v:
Discrete Mathematics & Theoretical Computer Science, Vol DMTCS Proceedings vol. AO,..., Iss Proceedings (2011)
In this paper we present a work in progress on a conjectural new combinatorial model for the Genocchi numbers. This new model called irreducible k-shapes has a strong algebraic background in the theory of symmetric functions and leads to seemingly ne
Externí odkaz:
https://doaj.org/article/e8c03a39f85b47ad82a2ddc9d0aca4d1
Publikováno v:
Discrete Mathematics & Theoretical Computer Science, Vol DMTCS Proceedings vol. AJ,..., Iss Proceedings (2008)
The Hecke group algebra $\operatorname{H} \mathring{W}$ of a finite Coxeter group $\mathring{W}$, as introduced by the first and last author, is obtained from $\mathring{W}$ by gluing appropriately its $0$-Hecke algebra and its group algebra. In this
Externí odkaz:
https://doaj.org/article/8d8982a5a8c04568baa86db66d738791
Publikováno v:
Discrete Mathematics & Theoretical Computer Science, Vol DMTCS Proceedings vol. AG,..., Iss Proceedings (2006)
A result of Foata and Schützenberger states that two statistics on permutations, the number of inversions and the inverse major index, have the same distribution on a descent class. We give a multivariate generalization of this property: the sorted
Externí odkaz:
https://doaj.org/article/54ca805ad5dd4efba81e9c547248b491
Publikováno v:
Discrete Mathematics & Theoretical Computer Science, Vol DMTCS Proceedings vol. AA,..., Iss Proceedings (2001)
In this paper, we provide the second part of the study of the pseudo-permutations. We first derive a complete analysis of the pseudo-permutations, based on hyperplane arrangements, generalizing the usual way of translating the permutations. We then s
Externí odkaz:
https://doaj.org/article/4180d33e5aaa416f9d40b0915a67df0a
Autor:
Nicolas M. Thiéry, Florent Hivert
Publikováno v:
Order.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b372e2366e5f464c49cd2efccc76e9bb
https://doi.org/10.1007/s11083-022-09607-5
https://doi.org/10.1007/s11083-022-09607-5
Autor:
Bérénice Delcroix-Oger, Florent Hivert, Patxi Laborde-Zubieta, Adrien Boussicault, Jean-Christophe Aval
Publikováno v:
FPSAC 2016
FPSAC 2016, 2016, Vancouver, Canada
FPSAC 2016, 2016, Vancouver, Canada
We present a new definition of non-ambiguous trees (NATs) as labelled binary trees. We thus get a differential equation whose solution can be described combinatorially. This yield a new formula for the number of NATs. We also obtain q-versions of our
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e73b829b9959789f6645eb1e66797213
https://doi.org/10.1016/j.ejc.2021.103331
https://doi.org/10.1016/j.ejc.2021.103331
Publikováno v:
Journal of Algebra
Journal of Algebra, Elsevier, 2016, 465, pp.322-355. ⟨10.1016/j.jalgebra.2016.07.001⟩
Journal of Algebra, 2016, 465, pp.322-355. ⟨10.1016/j.jalgebra.2016.07.001⟩
Journal of Algebra, Elsevier, 2016, 465, pp.322-355. ⟨10.1016/j.jalgebra.2016.07.001⟩
Journal of Algebra, 2016, 465, pp.322-355. ⟨10.1016/j.jalgebra.2016.07.001⟩
We introduce an operad of formal fractions, abstracted from the Mould operads and containing both the Dendriform and the Tridendriform operads. We consider the smallest set-operad contained in this operad and containing four specific elements of arit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8313641a4aeeaaab48b7e60422669ff
https://doi.org/10.1016/j.jalgebra.2016.07.001
https://doi.org/10.1016/j.jalgebra.2016.07.001
Autor:
Florent Hivert
Publikováno v:
The 8th International Workshop on Parallel Symbolic Computation (PASCO)
The 8th International Workshop on Parallel Symbolic Computation (PASCO), Jul 2017, Kaiserslautern, France. ⟨10.1145/3115936.3115938⟩
PASCO@ISSAC
The 8th International Workshop on Parallel Symbolic Computation (PASCO), Jul 2017, Kaiserslautern, France. ⟨10.1145/3115936.3115938⟩
PASCO@ISSAC
International audience; The goal of this abstract is to report on some parallel and high performance computations in combinatorics, each involving large datasets generated recursively: we start by presenting a small framework implemented in Sagemath
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9113a80ae7b42df7484760e4ffea6a0
https://hal.archives-ouvertes.fr/hal-01691051
https://hal.archives-ouvertes.fr/hal-01691051
Autor:
Nefton Pali, Florent Hivert
Publikováno v:
Advances in Mathematics
Advances in Mathematics, Elsevier, 2019, 354, ⟨10.1016/j.aim.2019.106732⟩
Advances in Mathematics, Elsevier, 2019
Advances in Mathematics, Elsevier, 2019, 354, ⟨10.1016/j.aim.2019.106732⟩
Advances in Mathematics, Elsevier, 2019
We obtain a complete time expansion of the pull-back operator generated by a real analytic flow of real analytic automorphisms acting on analytic tensor sections of a manifold. Our expansion is given in terms of multiple Lie derivatives. Motivated by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ef2ee200d053682f8e66643f229b1b3
https://doi.org/10.1016/j.aim.2019.106732
https://doi.org/10.1016/j.aim.2019.106732