Results 81 to 90 of about 162,256 (241)
A Survey of Alternating Permutations [PDF]
This survey of alternating permutations and Euler numbers includes refinements of Euler numbers, other occurrences of Euler numbers, longest alternating subsequences, umbral enumeration of classes of alternating permutations, and the cd-index of the ...
Stanley, Richard P.
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Applications in Enumerative Combinatorics of Infinite Weighted Automata\n and Graphs [PDF]
Rodrigo De Castro +2 more
openalex +3 more sources
Counting king permutations on the cylinder [PDF]
Eli Bagno +3 more
doaj +1 more source
Enumerative properties of generalized associahedra
Some enumerative aspects of the fans, called generalized associahedra, introduced by S. Fomin and A. Zelevinsky in their theory of cluster algebras are considered, in relation with a bicomplex and its two spectral sequences.
Chapoton, Frederic
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Linear-Time and Constant-Space Algorithms to compute Multi-Sequences that arise in Enumerative Combinatorics (and Elsewhere) [PDF]
Shalosh B. Ekhad, Doron Zeilberger
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q-Enumeration of type B and type D Eulerian polynomials based on parity of descents [PDF]
Hiranya Kishore Dey +2 more
doaj +1 more source
Enumerative combinatorics on words [PDF]
Generating series, also called generating functions, play an important role in combinatorial mathematics. Many enumeration problems can be solved by transferring the basic operations on sets into algebraic operations on formal series leading to a solution of an enumeration problem.
openaire +2 more sources
Highly sorted permutations with respect to a 312-avoiding stack [PDF]
Yuji Choi, Yunseo Choi
doaj +1 more source
Restricted Grassmannian permutations [PDF]
Juan B. Gil, Jessica A. Tomasko
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Fundamental polytopes of metric trees via parallel connections of matroids
We tackle the problem of a combinatorial classification of finite metric spaces via their fundamental polytopes, as suggested by Vershik in 2010. In this paper we consider a hyperplane arrangement associated to every split pseudometric and, for tree-like
Delucchi, Emanuele, Hoessly, Linard
core

