Results 11 to 20 of about 12,835 (246)

Algebraic Structure Graphs over the Commutative Ring Zm: Exploring Topological Indices and Entropies Using M-Polynomials

open access: yesMathematics, 2023
The field of mathematics that studies the relationship between algebraic structures and graphs is known as algebraic graph theory. It incorporates concepts from graph theory, which examines the characteristics and topology of graphs, with those from ...
Amal S. Alali   +5 more
doaj   +1 more source

Computing the topological entropy of general one-dimensional maps [PDF]

open access: yesTransactions of the American Mathematical Society, 1991
A matrix-theoretic method for computing the topological entropy of continuous, piecewise monotonic maps of the interval is presented. The method results in a constructive procedure which is easily implemented on the computer. Examples for families of unimodal, nonunimodal and discontinuous maps are presented.
P. Gora, A. Boyarsky
openaire   +1 more source

Effective entropy of quantum fields coupled with gravity

open access: yesJournal of High Energy Physics, 2020
Entanglement entropy, or von Neumann entropy, quantifies the amount of uncertainty of a quantum state. For quantum fields in curved space, entanglement entropy of the quantum field theory degrees of freedom is well-defined for a fixed background geometry.
Xi Dong   +3 more
doaj   +1 more source

Vertex-Based Topological Indices of Double and Strong Double Graph of Dutch Windmill Graph

open access: yesJournal of Chemistry, 2021
A measurement of the molecular topology of graphs is known as a topological index, and several physical and chemical properties such as heat formation, boiling point, vaporization, enthalpy, and entropy are used to characterize them.
Muhammad Asad Ali   +3 more
doaj   +1 more source

A morphospace of functional configuration to assess configural breadth based on brain functional networks

open access: yesNetwork Neuroscience, 2021
The quantification of human brain functional (re)configurations across varying cognitive demands remains an unresolved topic. We propose that such functional configurations may be categorized into three different types: (a) network configural breadth, (b)
Duy Duong-Tran   +7 more
doaj   +1 more source

Topological Entropy of Free Semigroup Actions Generated by Proper Maps for Noncompact Subsets [PDF]

open access: yesTaiwanese Journal of Mathematics, 2022
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xie, Xiaoyi, Ma, Dongkui
openaire   +2 more sources

Anomalies, black strings and the charged Cardy formula

open access: yesJournal of High Energy Physics, 2020
We derive the general anomaly polynomial for a class of two-dimensional CFTs arising as twisted compactifications of a higher-dimensional theory on compact manifolds ℳ d , including the contribution of the isometries of ℳ d .
Seyed Morteza Hosseini   +3 more
doaj   +1 more source

The generalized entropy in the generalized topological spaces

open access: yesTopology and its Applications, 2012
The authors study the generalized entropy of selfmaps, multi-selfmaps and selfmaps of the power set of a generalized topological space. They also establish a connection between generalized and standard entropy for usual selfmaps of a compact metric space and they show that the generalized entropy is a lower estimate of the standard entropy.
Pawlak, Ryszard J., Loranty, Anna
openaire   +2 more sources

The universal property of the entropy sum of black holes in all dimensions

open access: yesPhysics Letters B, 2014
It is proposed by Cvetic et al. [1] that the product of all horizon areas for general rotating multi-change black holes has universal expressions independent of the mass.
Yi-Qiang Du, Yu Tian
doaj   +1 more source

Thermodynamics of random reaction networks. [PDF]

open access: yesPLoS ONE, 2015
Reaction networks are useful for analyzing reaction systems occurring in chemistry, systems biology, or Earth system science. Despite the importance of thermodynamic disequilibrium for many of those systems, the general thermodynamic properties of ...
Jakob Fischer   +2 more
doaj   +1 more source

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