Results 21 to 30 of about 3,935,925 (265)

Finitary Group Cohomology and Group Actions on Spheres

, 2008
We show that if G is an infinitely generated locally (polycyclic-by-finite) group with cohomology almost everywhere finitary, then every finite subgroup of G acts freely and orthogonally on some sphere.Comment: 6 ...
Hamilton, Martin
core   +1 more source

Periodic Complexes and Group Actions

, 2000
In this paper we show that the cohomology of a connected CW complex is periodic if and only if it is the base space of an orientable spherical fibration with total space that is homotopically finite dimensional.
Adem, Alejandro, Smith, Jeff H.
core   +3 more sources

OPTIMAL LINE PACKINGS FROM FINITE GROUP ACTIONS

Forum of Mathematics, Sigma, 2020
We provide a general program for finding nice arrangements of points in real or complex projective space from transitive actions of finite groups. In many cases, these arrangements are optimal in the sense of maximizing the minimum distance.
JOSEPH W. IVERSON, JOHN JASPER, DUSTIN G. MIXON   +2 more
doaj   +1 more source

Symmetries, group actions, and entanglement

, 2006
We address several problems concerning the geometry of the space of Hermitian operators on a finite-dimensional Hilbert space, in particular the geometry of the space of density states and canonical group actions on it.
Grabowski, Janusz, Kus, Marek, Marmo, Giuseppe   +2 more
core   +1 more source

Quantum Money from Abelian Group Actions [PDF]

TheoretiCS
We give a construction of public key quantum money, and even a strengthened version called quantum lightning, from abelian group actions, which can in turn be constructed from suitable isogenies over elliptic curves.
Mark Zhandry
doaj   +1 more source

Perception of intentionality in group actions

Journal of Human Environmental Studies, 2008
The present study examined how people explain actions performed by groups and individual members. The study specifically tested whether the presence of an executive function in groups to make decisions would affect the contents of behavior explanations ...
Sakura Teramae, Minoru Karasawa
doaj   +1 more source

Area preserving group actions on surfaces

, 2003
Suppose G is an almost simple group containing a subgroup isomorphic to the three-dimensional integer Heisenberg group. For example any finite index subgroup of SL(3,Z) is such a group.
Casson, Franks, Franks, Franks, Franks, Handel, John Franks, Margulis, Mather, Mather, Michael Handel, Tits, Zimmer, Zimmer   +13 more
core   +1 more source

Patient Activation in Childhood, Adolescent, and Young Adult Cancer Survivors: Current Insights and Implications for Survivorship Care—A Systematic Review From the e‐QuoL Project

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Purpose Patient activation—encompassing knowledge, confidence, and skills in managing individual's health—is a cornerstone of person‐centered care. However, its significance among childhood, adolescent, and young adult cancer survivors (CAYACS) remains unexplored. This article examines the application of the 13‐item Patient Activation Measure (
Charlotte Demoor‐Goldschmidt, Anne Maas, Gisela Michel, Amandine Bertrand, Kristen E. T. Thornton, Martine Bellanger, Anna‐Liesa Filbert, Desiree Grabow, Monica Muraca, Katharina Roser, Sara Oberti, Jelena Roganovic, Hanne Cathrine Lie   +12 more
wiley   +1 more source

Unheard and Under‐Supported: Health‐Related Quality of Life in Children, Adolescents, and Young Adults With Sickle Cell Disease

Pediatric Blood &Cancer, EarlyView.
Abstract Background Sickle cell disease (SCD) is an autosomal recessive hemoglobinopathy affecting millions of individuals worldwide. The clinical expression and psychosocial burden of SCD vary widely across geographical, cultural, and healthcare system contexts, underscoring the need for setting‐specific approaches to assessment.
Desiré Fantasia, Giulia Reggiani, Elizabeth J. Maran, Maria Elisa Delle Fave, Ilaria Baido, Anna Chiara Frigo, Maria Paola Boaro, Raffaella Colombatti   +7 more
wiley   +1 more source

A small serving of mash: (Quantum) algorithms for SPDH-Sign with small parameters

Journal of Mathematical Cryptology
We find an efficient method to solve the semidirect discrete logarithm problem (SDLP) over finite nonabelian groups of order p3{p}^{3} and exponent p2{p}^{2} for certain exponentially large parameters. This implies an attack on SPDH-Sign,Pronounced “SPUD-
Mendelsohn Andrew, Dable-Heath Edmund, Ling Cong   +2 more
doaj   +1 more source