Results 31 to 40 of about 277 (136)

The Generic Circular Triangle‐Free Graph

open access: yesJournal of Graph Theory, Volume 109, Issue 4, Page 426-445, August 2025.
ABSTRACT In this article, we introduce the generic circular triangle‐free graph C 3 and propose a finite axiomatization of its first‐order theory. In particular, our main results show that a countable graph G embeds into C 3 if and only if it is a { K 3 , K 1 + 2 K 2 , K 1 + C 5 , C 6 }‐free graph.
Manuel Bodirsky, Santiago Guzmán‐Pro
wiley   +1 more source

Absent Tech: Data, Violence and (Non)Credibility at the EU Borders

open access: yesInternational Migration, Volume 63, Issue 4, August 2025.
ABSTRACT The digitisation of borders has permeated academic and political debates, the image of ‘digital fortress Europe’ becoming normalised and taken for granted. This ‘taken for grantedness’, however, clashes with the reality on the ground and has important implications for migrants' rights and credibility.
Lucrezia Canzutti
wiley   +1 more source

Quasi-projective relation algebras and directed cylindric algebras are categorially equivalent

open access: yes, 2013
arXiv admin note: substantial text overlap with arXiv:1303.7386, arXiv:1304.0712; and overlap with arXiv:math/0508572 by other author without ...
openaire   +2 more sources

Cohomology of block algebras of finite groups [PDF]

open access: yes, 2011
This survey article is intended as an introduction to the recent categorical classification theorems of the three authors, restricting to the special case of the category of modules for a finite group.
Ringel, Claus Michael   +2 more
openaire   +25 more sources

Prerequisite Relations Annotation Tool: Annotation and analysis of educational relations in texts

open access: yesJournal of the Association for Information Science and Technology, Volume 76, Issue 7, Page 1006-1027, July 2025.
Abstract Relations between terms in texts have long been studied in linguistics and specialized knowledge domains, especially when occurring in educational materials like textbooks, where they play a crucial role in guiding instructional design and learning.
Chiara Alzetta, Ilaria Torre
wiley   +1 more source

“It's all about trust!” a multilevel model of the effect of servant leadership on firefighters' group task performance, adaptivity and emotional exhaustion

open access: yesPublic Administration Review, Volume 85, Issue 4, Page 1150-1172, July/August 2025.
Abstract How and why does servant leaders' behavior influence both performance (individual and collective) and emotional exhaustion within dynamic and extreme environments such as those of firefighters? We develop and test a multilevel model that integrates the principles of servant leadership with social exchange theory to explore how servant ...
Anthony Perrier   +3 more
wiley   +1 more source

Some algebraic laws for spans (and their connections with multirelations)1 1Research partly supported by the EC TMR Network getgrats and by the Italian MURST Project tosca.

open access: yesElectronic Notes in Theoretical Computer Science, 2003
This paper investigates some key algebraic properties of the categories of spans and cospans (up to isomorphic supports) over the category Set of (small) sets and functions, analyzing the monoidal structures induced over both spans and cospans by cartesian product and disjoint union of sets.
Roberto Bruni, Fabio Gadducci
openaire   +2 more sources

Projective and plane curves: a relation between algebra, topology, and complex analysis

open access: yes, 2022
Los ceros de un polinomio sobre un cuerpo algebraic revelan relaciones entre el álgebra, la topología, y el análisis complejo. Son curvas algebraicas y, en este trabajo de fin de grado, las estudiamos sobre C 2 (llamadas curvas afines) y sobre P 2 C (llamadas curvas proyectivas), haciendo especial énfasis en las curvas planas (curvas proyectivas sin ...
openaire   +1 more source

From Lorentz to $SIM(2)$: contraction, four-dimensional algebraic relations and projective representations

open access: yes
17 ...
Rodrigues, J. E.   +3 more
openaire   +2 more sources

Multi-Query Optimization Revisited: A Full-Query Algebraic Method. [PDF]

open access: yesProc IEEE Int Conf Big Data, 2022
Tu Y, Eslami M, Xu Z, Charkhgard H.
europepmc   +1 more source

Home - About - Disclaimer - Privacy