Results 31 to 40 of about 5,940 (73)

Chain-imprimitive, flag-transitive 2-designs [PDF]

Designs, Codes and Cryptography
We consider 2-designs which admit a group of automorphisms that is flag-transitive and leaves invariant a chain of nontrivial point-partitions. We build on our recent work on 2-designs which are block-transitive but not necessarily flag-transitive.
Carmen Amarra, Alice Devillers, Cheryl E. Praeger   +2 more
semanticscholar   +1 more source

Approximate‐Guided Representation Learning in Vision Transformer

CAAI Transactions on Intelligence Technology, Volume 10, Issue 5, Page 1459-1477, October 2025.
ABSTRACT In recent years, the transformer model has demonstrated excellent performance in computer vision (CV) applications. The key lies in its guided representation attention mechanism, which uses dot‐product to depict complex feature relationships, and comprehensively understands the context semantics to obtain feature weights.
Kaili Wang, Xinwei Sun, Huijie He, Fenhua Bai, Tao Shen   +4 more
wiley   +1 more source

Identity‐By‐Descent Mapping Using Multi‐Individual IBD With Genome‐Wide Multiple Testing Adjustment

Genetic Epidemiology, Volume 49, Issue 6, September 2025.
ABSTRACT We present an identity‐by‐descent mapping approach to test the association between genome‐wide loci and complex traits. Our method evaluates whether levels of genetic similarities at specific genomic locations, captured by local relatedness matrices derived from multi‐individual IBD sharing, are associated with phenotypic variation in complex ...
Ruoyi Cai, Sharon R. Browning
wiley   +1 more source

The Dehn twist coefficient for big and small mapping class groups

Journal of the London Mathematical Society, Volume 112, Issue 2, August 2025.
Abstract We study a quasimorphism, which we call the Dehn twist coefficient (DTC), from the mapping class group of a surface (with a chosen compact boundary component) that generalizes the well‐studied fractional Dehn twist coefficient (FDTC) to surfaces of infinite type. Indeed, for surfaces of finite type, the DTC coincides with the FDTC.
Peter Feller, Diana Hubbard, Hannah Turner   +2 more
wiley   +1 more source

Groups with triangle‐free graphs on p$p$‐regular classes

Mathematische Nachrichten, Volume 298, Issue 6, Page 1796-1807, June 2025.
Abstract Let p$p$ be a prime. In this paper, we classify the p$p$‐structure of those finite p$p$‐separable groups such that, given any three non‐central conjugacy classes of p$p$‐regular elements, two of them necessarily have coprime lengths.
M. J. Felipe, M. K. Jean‐Philippe, V. Sotomayor   +2 more
wiley   +1 more source

Parabolic subgroups in characteristics 2 and 3

Journal of the London Mathematical Society, Volume 111, Issue 6, June 2025.
Abstract This text brings to an end the classification of non‐reduced parabolic subgroups in positive characteristic, especially 2 and 3: they are all obtained as intersections of parabolics having maximal reduced part. We prove this result and deduce a few geometric consequences on rational projective homogeneous varieties.
Matilde Maccan
wiley   +1 more source

Topological coordination numbers and coordination reciprocity from electron‐density distributions

Acta Crystallographica Section A, Volume 81, Issue 3, Page 221-244, May 2025.
An approach is presented to calculate topological coordination numbers (tCNs) obeying the principle of coordination reciprocity from solid angles subtended by the interatomic surfaces of electron density (QTAIM) atomic domains. The tCN approach characterizes a compound's coordination situation as a set of sub‐coordination scenarios with associated ...
Frank R. Wagner, Riccardo Freccero, Yuri Grin   +2 more
wiley   +1 more source

Local character expansions and asymptotic cones over finite fields

Proceedings of the London Mathematical Society, Volume 130, Issue 5, May 2025.
Abstract We generalise Gelfand–Graev characters to R/Z$\mathbb {R}/\mathbb {Z}$‐graded Lie algebras and lift them to produce new test functions to probe the local character expansion in positive depth. We show that these test functions are well adapted to compute the leading terms of the local character expansion and relate their determination to the ...
Dan Ciubotaru, Emile Okada
wiley   +1 more source

Importance of mega-environments in evaluation and identification of climate resilient maize hybrids (Zea mays L.). [PDF]

PLoS One, 2023
Kachapur RM, Patil NL, Talekar SC, Wali MC, Naidu G, Salakinakop SR, Harlapur SI, Bhat JS, Kuchanur PH.   +8 more
europepmc   +1 more source

Filters and congruences in sectionally pseudocomplemented lattices and posets. [PDF]

Soft comput, 2021
Chajda I, Länger H.
europepmc   +1 more source