Results 1 to 10 of about 2,116 (116)

Topology meets superconductivity in a one-dimensional t-J model of magnetic atoms [PDF]

open access: yesNature Communications
Strongly interacting fermions represent the key constituent of several intriguing phases of matter. However, due to the inherent complexity of these systems, important regimes are still inaccessible.
Leonardo Bellinato Giacomelli   +5 more
doaj   +2 more sources

A comparative mathematical modeling study of phenotypic approaches to T cell activation [PDF]

open access: yesScientific Reports
T cells use their T cell antigen receptors (TCRs) to recognize peptides presented by major histocompatibility complex molecules (pMHC). These peptides may be low-affinity self-peptides or high-affinity foreign peptides from pathogens. Despite recognizing
Yogesh Bali, Alan D. Rendall
doaj   +2 more sources

Choosing courtship over caution: male jumping spiders delay anti-predator responses [PDF]

open access: yesFrontiers in Zoology
Predation risk imposes fundamental trade-offs between survival and reproduction, often leading to sex- and age-specific differences in anti-predator behaviour.
Miriam Scriba   +3 more
doaj   +2 more sources

On the numerical solution of a free end-time homicidal chauffeur game* [PDF]

open access: yesESAIM: Proceedings and Surveys, 2021
A functional formulation of the classical homicidal chauffeur Nash game is presented and a numerical framework for its solution is discussed. This methodology combines a Hamiltonian based scheme with proximal penalty to determine the time horizon where ...
Calà Campana Francesca   +3 more
doaj   +1 more source

polymake and Lattice Polytopes [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2009
The $\mathtt{polymake}$ software system deals with convex polytopes and related objects from geometric combinatorics. This note reports on a new implementation of a subclass for lattice polytopes.
Michael Joswig   +2 more
doaj   +1 more source

Many neighborly inscribed polytopes and Delaunay triangulations [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2014
We present a very simple explicit technique to generate a large family of point configurations with neighborly Delaunay triangulations. This proves that there are superexponentially many combinatorially distinct neighborly $d$-polytopes with $n$ vertices
Bernd Gonska, Arnau Padrol
doaj   +1 more source

Changing between representations of elementary functions: students’ competencies and differences with a specific perspective on school track and gender

open access: yesInternational Journal of STEM Education, 2022
Background Functional thinking is characterized as a specific way of thinking in relationships, dependencies, and changes. Hence, beyond mathematics, it is also crucial for other (STEM) disciplines as well as for everyday situations.
Ute Sproesser   +3 more
doaj   +1 more source

The Degree Distribution of Thickened Trees [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2008
We develop a combinatorial structure to serve as model of random real world networks. Starting with plane oriented recursive trees we substitute the nodes by more complex graphs.
Michael Drmota   +2 more
doaj   +1 more source

Infinite Systems of Functional Equations and Gaussian Limiting Distributions [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2012
In this paper infinite systems of functional equations in finitely or infinitely many random variables arising in combinatorial enumeration problems are studied. We prove sufficient conditions under which the combinatorial random variables encoded in the
Michael Drmota   +2 more
doaj   +1 more source

Selbstreguliertes und kooperatives Lernen mit digitalen Medien – Ergebnisse der SITE-Studie und der SelMa-Evaluation

open access: yesMedienPädagogik: Zeitschrift für Theorie und Praxis der Medienbildung, 2017
Der vorliegende Beitrag stellt Ergebnisse zum selbstregulierten und kooperativen Lernen aus zwei vom Institut für Schulentwicklungsforschung der Universität Dortmund durchgeführten Studien vor.
Renate Schulz-Zander, Annabell Preussler
doaj   +1 more source

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