Results 71 to 80 of about 21,091,768 (168)
The Reversal Poset of Signed Permutations
, 2021 The set of signed permutations S±(n) has a fascinating structure. A reversal acting on a permutation π ∈ S±(n) reverses the order of elements in consecutive positions and changes their signs. As a group, S±(n) is generated by the collection of reversals.
Awik, Fadi A
core +1 more source
Hyperbinary partitions and q-deformed rationals
Forum of Mathematics, SigmaA hyperbinary partition of the nonnegative integer n is a partition where every part is a power of $2$ and every power of $2$ appears at most twice.
Thomas McConville +2 more
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Manin's conjecture for integral points on toric varieties
Proceedings of the London Mathematical Society, Volume 133, Issue 2, August 2026.Abstract We formulate a conjecture on the number of integral points of bounded height on log Fano varieties in analogy with Manin's conjecture on the number of rational points of bounded height on Fano varieties. We also give a prediction for the leading constant that is similar to Peyre's interpretation of the leading constant in Manin's conjecture ...
Tim Santens
wiley +1 more source
Entropía algebraica de un poset [PDF]
, 2017 El propósito de este trabajo es definir la noción de entropía algebraica sobre un poset con el fin de probar algunos resultados clásicos de la teoría de representaciones de posets.
Cubillos Delgado, Alfonso
core
Weighted Coordinates Poset Block Codes
, 2022 Given $[n]=\{1,2,\ldots,n\}$, a partial order $\preceq$ on $[n]$, a label map $\pi : [n] \rightarrow \mathbb{N}$ defined by $\pi(i) = k_i$ with $\sum_{i=1}^{n}\pi (i) = N$, the direct sum $ \mathbb{F}_{q}^{k_1} \oplus \mathbb{F}_{q}^{k_2}\oplus \ldots ...
Shriwastva, Atul Kumar, Selvaraj, R. S.
core
Regular Schur labeled skew shape posets and their 0-Hecke modules
Forum of Mathematics, SigmaAssuming Stanley’s P-partitions conjecture holds, the regular Schur labeled skew shape posets are precisely the finite posets P with underlying set $\{1, 2, \ldots , |P|\}$ such that the P-partition generating function is symmetric and the set of ...
Young-Hun Kim, So-Yeon Lee, Young-Tak Oh
doaj +1 more source
Skew shapes, Ehrhart positivity, and beyond
Proceedings of the London Mathematical Society, Volume 133, Issue 2, August 2026.Abstract A classical result by Kreweras (1965) allows one to compute the number of plane partitions of a given skew shape and bounded parts as certain determinants. We prove that these determinants expand as polynomials with nonnegative coefficients.
Luis Ferroni +2 more
wiley +1 more source
Modeling Poset Convex Subsets [PDF]
, 2015 A subset S of a poset (partially ordered set) is convex if and only if S contains every poset element which is between any two elements in S. Poset convex subsets arise in applications that involve precedence constraints, such as in project scheduling ...
Wolsey, Laurence, Queyranne, Maurice
core
AxiomsIn this article, a correspondence between some important classes of numerical semigroups and well-known families of bipartite graphs has been established.
Maria Mehtab +4 more
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Climate Change and (Mal)Adaptation in Tourism‐Intensive Alpine Regions
The Political Quarterly, Volume 97, Issue 3, Page 400-406, July/September 2026.Abstract Tourism, especially in winter, accounts for a large share of economic income in Alpine regions. At the same time, these regions are more severely affected by climate change, leading to shorter winter seasons and reduced snow cover. This presents a pressing issue for areas reliant on income from winter tourism through activities such as skiing.
Valentina Ausserladscheider
wiley +1 more source