Results 51 to 60 of about 159 (130)
Restricted lonesum matrices [PDF]
, 2018 Lonesum matrices are matrices that are uniquely reconstructible from their row and column sum vectors. These matrices are enumerated by the poly-Bernoulli numbers; a sequence related to the multiple zeta values with a rich literature in number theory.
Bényi, Beáta
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Pattern Avoiding Permutations Enumerated by Inversions [PDF]
Discrete Mathematics & Theoretical Computer SciencePermutations are usually enumerated by size, but new results can be found by enumerating them by inversions instead, in which case one must restrict one's attention to indecomposable permutations.
Atli Fannar Franklín
doaj +1 more source
Обобщение на спускащите се полиноми
, 2022 [Raychev Angel; Райчев Ангел]2020 Mathematics Subject Classification ...
Raychev, Angel
core
Long increasing subsequences and non-algebraicity [PDF]
Discrete Mathematics & Theoretical Computer ScienceWe use a recent result of Alin Bostan to prove that the generating functions of two infinite sequences of permutation classes are not algebraic.
Miklos Bona
doaj +1 more source
Stack-sorting for Coxeter groups [PDF]
, 2022 Given an essential semilattice congruence \(\equiv\) on the left weak order of a \linebreak Coxeter group \(W\), we define the Coxeter stack-sorting operator \({\bf S}_\equiv:W\to W\) by \({{\bf S}_\equiv(w)=w\big(\pi_\downarrow^\equiv(w)\big)^{-1 ...
Defant, Colin
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A positional statistic for 1324-avoiding permutations [PDF]
Discrete Mathematics & Theoretical Computer ScienceWe consider the class $S_n(1324)$ of permutations of size $n$ that avoid the pattern 1324 and examine the subset $S_n^{a\prec n}(1324)$ of elements for which $a\prec n\prec [a-1]$, $a\ge 1$.
Juan B. Gil +2 more
doaj +1 more source
Mathematics Subject Classification interrater agreement dataset
, 2022 The Mathematics Subject Classification organizes Publications, Software, and Research Data into a hierarchical classification scheme maintained by MathSciNet (mr) and zbMATH Open (zbmath). According to the classification scheme, both organizations mr and
Olaf Teschke +2 more
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Generalized Stirling permutations and forests: Higher-order Eulerian and Ward numbers [PDF]
, 2014 20 pags.; 4 figs.; Mathematics Subject Classifications: 05A05, 05A15, 05C30We define a new family of generalized Stirling permutations that can be interpreted in terms of ordered trees and forests.
Sánchez Villaseñor, Eduardo Jesús +8 more
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Use of a Cytobrush for Sampling the Ear Canal of Dogs With Otitis Externa
Veterinary Dermatology, Volume 37, Issue 2, Page 227-235, April 2026.Cytological examination of the ear canal is essential for evaluating dogs with otitis externa (OE). The conventional sampling method uses a swab. However, the cytobrush (gynaecological cervical brush), already used for cytological collection from other anatomical sites, has not been adequately investigated for this purpose in dogs with OE.
Nicoly Radaeli Atanasio +3 more
wiley +1 more source
Veterinary Dermatology, Volume 27, Issue 5, Page 391-e98, October 2016., 2016 Background– Pseudomonas aeruginosa (PA) may cause suppurative otitis externa with severe inflammation and ulceration in dogs. Multidrug resistance is commonly reported for this organism, creating a difficult therapeutic challenge. Objective– The aim of this study was to evaluate the in vitro antimicrobial activity of a gel containing 0.5 µg/mL of ...
Giovanni Ghibaudo +6 more
wiley +1 more source