Results 61 to 70 of about 2,353,350 (290)
Rational smoothness and affine Schubert varieties of type A [PDF]
Discrete Mathematics & Theoretical Computer Science, 2011 The study of Schubert varieties in G/B has led to numerous advances in algebraic combinatorics and algebraic geometry. These varieties are indexed by elements of the corresponding Weyl group, an affine Weyl group, or one of their parabolic quotients ...
Sara Billey, Andrew Crites
doaj +1 more source
Referral Patterns and Diagnostic Timeliness in Pediatric Cancer: A Hospital‐Based Study in Indonesia
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Timely diagnosis and treatment are critical for improving survival among children with cancer. In low‐ and middle‐income countries (LMICs), delays are common and may be influenced by fragmented referral pathways and diagnostic limitations.
Nur Melani Sari +5 more
wiley +1 more source
Permutations avoiding the complement of a regular permutation group [PDF]
Discrete Mathematics Letters, 2023 Erkko Lehtonen
doaj +1 more source
Arc Permutations (extended abstract) [PDF]
Discrete Mathematics & Theoretical Computer Science, 2012 Arc permutations and unimodal permutations were introduced in the study of triangulations and characters. In this paper we describe combinatorial properties of these permutations, including characterizations in terms of pattern avoidance, connections to ...
Sergi Elizalde, Yuval Roichman
doaj +1 more source
Pattern avoidance in “flattened” partitions
Discrete Mathematics, 2009 To flatten a set partition (with apologies to Mathematica) means to form a permutation by erasing the dividers between its blocks. Of course, the result depends on how the blocks are listed. For the usual listing--increasing entries in each block and blocks arranged in increasing order of their first entries--we count the partitions of [n] whose ...
openaire +2 more sources
Pattern Avoidance and Young Tableaux
The Electronic Journal of Combinatorics, 2017 This paper extends Lewis's bijection (J. Combin. Theorey Ser. A 118, 2011) to a bijection between a more general class $\mathcal{L}(n,k,I)$ of permutations and the set of standard Young tableaux of shape $\langle (k+1)^n\rangle$, so the cardinality\[|\mathcal{L}(n,k,I)|=f^{\langle (k+1)^n\rangle},\]is independent of the choice of $I\subseteq [n]$. As a
Zhousheng Mei, Suijie Wang
openaire +2 more sources
Pediatric Blood &Cancer, EarlyView.ABSTRACT Relapsed and/or refractory (R/R) pediatric acute leukemia carries a dismal prognosis, largely driven by chemoresistance to conventional salvage therapy. The BH3‐mimetic venetoclax, combined with chemotherapy or hypomethylating agents, has demonstrated efficacy in small clinical trials.
Katherine S. Colman +9 more
wiley +1 more source
METHOD OF COORDINATION OF MOTION OF SWARM ROBOTIC SYSTEMS
Scientific Journal of Astana IT University, 2023 Maintaining a specific geometric pattern is essential in various applications where groups of autonomous robots must follow a given path. Proper organization of the geometric pattern can lead to several benefits such as cost reduction, increased system ...
Abzal Kyzyrkanov +5 more
doaj +1 more source
Optimization with Pattern-Avoiding Input
Proceedings of the 56th Annual ACM Symposium on Theory of ComputingPermutation pattern-avoidance is a central concept of both enumerative and extremal combinatorics. In this paper we study the effect of permutation pattern-avoidance on the complexity of optimization problems. In the context of the dynamic optimality conjecture (Sleator, Tarjan, STOC 1983), Chalermsook, Goswami, Kozma, Mehlhorn, and Saranurak (FOCS ...
Benjamin Aram Berendsohn +2 more
openaire +4 more sources
Interval Pattern Avoidance for Arbitrary Root Systems
, 2010 We extend the idea of interval pattern avoidance defined by Yong and the author for Sn to arbitrary Weyl groups using the definition of pattern avoidance due to Billey and Braden, and Billey and Postnikov.
Alexander Woo
core +1 more source