Results 121 to 130 of about 1,819 (220)

The transitivity problem of Turing machines

open access: yes, 2015
International audienceA Turing machine is topologically transitive if every partial configuration — that is a state, a head position, plus a finite portion of the tape — can reach any other partial configuration, provided that it is completed into a ...
Ollinger, Nicolas   +5 more
core   +1 more source

Disorder-induced topological transitions in a multilayer topological insulator

open access: yesPhysical Review B
We examine the impact of non-magnetic disorder on the electronic states of a multilayer structure comprising layers of both topological and conventional band insulators. Employing the Burkov-Balents model with renormalized tunneling parameters, we generate phase diagrams correlating with disorder, demonstrating that non-magnetic disorder can induce ...
Z. Z. Alisultanov, A. Kudlis
openaire   +2 more sources

Topological Lifshitz transitions [PDF]

open access: yesLow Temperature Physics, 2017
Different types of Lifshitz transitions are governed by topology in momentum space. They involve the topological transitions with the change of topology of Fermi surfaces, Weyl and Dirac points, nodal lines, and also the transitions between the fully gapped states.
openaire   +6 more sources

Commensurate distances and similar motifs in genetic congruence and protein interaction networks in yeast

open access: yesBMC Bioinformatics, 2005
Background In a genetic interaction, the phenotype of a double mutant differs from the combined phenotypes of the underlying single mutants. When the single mutants have no growth defect, but the double mutant is lethal or exhibits slow growth, the ...
Peyser Brian D   +3 more
doaj   +1 more source

Topological Phase Transitions [PDF]

open access: yes, 2019
This chapter aims to develop a systematic theory of topological phase transitions (TPTs) and explores a few typical examples, including (1) quantum phase transitions (QPTs), (2) galactic spiral structures, (3) electromagnetic eruptions on solar surface, (4) boundary-layer separation of fluid flows, and (5) interior separation of fluid flows.
Tian Ma, Shouhong Wang
openaire   +1 more source

Disjoint strong transitivity of composition operators

open access: yes, 2022
A Furstenberg family $\mathcal{F}$ is a collection of infinite subsets of the set of positive integers such that if $A\subset B$ and $A\in \mathcal{F}$, then $B\in \mathcal{F}$. For a Furstenberg family $\mathcal{F}$, finitely many operators $T_1,...,T_N$
Benchiheb, Otmane   +2 more
core  

Topological entropy, sets of periods, and transitivity for circle maps

open access: yes
Transitivity, the existence of periodic points and positive topological entropy can be used to characterize complexity in dynamical systems. It is known that for graphs that are not trees, for every ε > 0, there exist (complicate) totally transitive maps
Alsedà i Soler, Lluís   +2 more
core   +1 more source

On the space of subgroups of Baumslag-Solitar groups II : High transitivity

open access: yes
A continuation of "On the space of subgroups of Baumslag-Solitar groups I: perfect kernel and phenotype", by Alessandro Carderi, Damien Gaboriau, François Le Maîitre, Yves Stalder (hal-03829832).
Gaboriau, Damien   +2 more
core   +2 more sources

Some Variations of Transitivity for CR-dynamical systems

open access: yes, 2023
We consider the topological dynamics of closed relations(CR) by studying one of the oldest dynamical property - `transitivity'. We investigate the two kinds of (closed relation) CR-dynamical systems - $(X,G)$ where the relation $G \subseteq X \times X ...
Adhikary, Nayan, Nagar, Anima
core  

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