Results 41 to 50 of about 1,119,312 (169)

Big Entropy Fluctuations in Statistical Equilibrium: The Macroscopic Kinetics

open access: yes, 2000
Large entropy fluctuations in an equilibrium steady state of classical mechanics were studied in extensive numerical experiments on a simple 2--freedom strongly chaotic Hamiltonian model described by the modified Arnold cat map.
A. Cottrell   +22 more
core   +2 more sources

Characterizations of (strongly) ordered regular relations on ordered semihypergroups

open access: yesJournal of Algebra, 2016
In this paper, the authors study the concept of ordered regular (strongly ordered regular) equivalence relations on ordered semihypergroups. In particular, they construct an ordered regular equivalence relation on an ordered semihypergroup by hyperideals such that the corresponding quotient structure is also an ordered semihypergroup, which answers the
Ze Gu, Xilin Tang
openaire   +1 more source

Entanglement entropies of the $J_1 - J_2$ Heisenberg antiferromagnet on the square lattice

open access: yes, 2015
Using a modified spin-wave theory which artificially restores zero sublattice magnetization on finite lattices, we investigate the entanglement properties of the N\'eel ordered $J_1 - J_2$ Heisenberg antiferromagnet on the square lattice. Different kinds
Alet, Fabien   +2 more
core   +2 more sources

Summation of rational series twisted by strongly B-multiplicative coefficients [PDF]

open access: yes, 2015
We evaluate in closed form series of the type $\sum u(n) R(n)$, where $(u(n))_n$ is a strongly $B$-multiplicative sequence and $R(n)$ a (well-chosen) rational function. A typical example is: $$ \sum_{n \geq 1} (-1)^{s_2(n)} \frac{4n+1}{2n(2n+1)(2n+2)} = -
Allouche, Jean-Paul, Sondow, Jonathan
core   +2 more sources

Analysis of Korean Peninsula Earthquake Network Based on Event Shuffling and Network Shuffling

open access: yesEntropy, 2021
In this work, a Korean peninsula earthquake network, constructed via event-sequential linking known as the Abe–Suzuki method, was investigated in terms of network properties.
Seungsik Min, Gyuchang Lim
doaj   +1 more source

On the Pauli graphs of N-qudits [PDF]

open access: yes, 2007
A comprehensive graph theoretical and finite geometrical study of the commutation relations between the generalized Pauli operators of N-qudits is performed in which vertices/points correspond to the operators and edges/lines join commuting pairs of them.
Planat, Michel, Saniga, Metod
core   +4 more sources

Prenatal screening and diagnosis of genetic abnormalities: SEGO, SEQCML, AEDP consensus recommendations

open access: yesAdvances in Laboratory Medicine, 2020
In this paper, the scientific societies SEGO, SEQCML and AEDP provide a series of consensus-based recommendations for prenatal screening and diagnosis of genetic abnormalities.
Prieto Belén   +8 more
doaj   +1 more source

Effects of acute cervical stretching on arterial wall elastic properties

open access: yesFrontiers in Physiology, 2023
Purpose: Acute (immediate) or regular (mid- or long-term) stretching increases arterial compliance and reduces arterial stiffness. Stretching is widely known to induce arterial functional factor changes, but it is unclear whether stretching alters ...
Harumi Ikebe   +7 more
doaj   +1 more source

Markov semigroups, monoids, and groups

open access: yes, 2012
A group is Markov if it admits a prefix-closed regular language of unique representatives with respect to some generating set, and strongly Markov if it admits such a language of unique minimal-length representatives over every generating set. This paper
Alan J. Cain   +9 more
core   +1 more source

The automorphism group of a class of strongly regular graphs related to Q(6,q)

open access: yesEuropean Journal of Combinatorics, 2008
Let \(Q(6,q)\) be a nondegenerate parabolic polar space in \(PG(6,q)\). Define the following graph \(\Gamma(q)\): the vertices of \(\Gamma(q)\) are all non-degenerate elliptic quadrics \(Q^-(5,q)\subset Q(6,q)\) and two vertices are adjacent provided the corresponding elliptic quadrics intersect in a tangent 4-space, that is, a cone \(pQ^-(3,q ...
De Winter, Stefaan   +1 more
openaire   +3 more sources

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