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The critical exponent functions [PDF]

open access: yesComptes Rendus. Mathématique, 2022
The critical exponent of a finite or infinite word $w$ over a given alphabet is the supremum of the reals $\alpha $ for which $w$ contains an $\alpha $-power.
Corona, Dario, Della Corte, Alessandro
doaj   +5 more sources

The Critical Exponent is Computable for Automatic Sequences [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2011
The critical exponent of an infinite word is defined to be the supremum of the exponent of each of its factors. For k-automatic sequences, we show that this critical exponent is always either a rational number or infinite, and its value is computable ...
Jeffrey Shallit
doaj   +6 more sources

Solutions to Kirchhoff equations with critical exponent

open access: yesArab Journal of Mathematical Sciences, 2016
In this paper, we study the following problems {Δ2u−M(∫Ω|∇u|2dx)Δu=λf(x,u)+|u|2∗−2uinΩu=Δu=0on∂Ω, where 2∗=2NN−4 is the critical exponent. Under some conditions on M and f, we prove the existence of nontrivial solutions by using variational methods.
El Miloud Hssini   +2 more
doaj   +4 more sources

Geometrical Aspect of Compressibility Critical Exponent

open access: yesFrontiers in Physics, 2022
Critical exponent γ ⪰ 1.1 characterizes the behavior of the mechanical compressibility of a real fluid when the temperature approaches the critical one.
J. S. Yu, W. K. Du, Q. H. Liu
doaj   +3 more sources

Complementary symmetric Rote sequences: the critical exponent and the recurrence function [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2020
We determine the critical exponent and the recurrence function of complementary symmetric Rote sequences. The formulae are expressed in terms of the continued fraction expansions associated with the S-adic representations of the corresponding standard ...
Lubomíra Dvořáková   +2 more
doaj   +2 more sources

Exponent-critical primitive graphs and the Kronecker product

open access: yesElectronic Journal of Graph Theory and Applications, 2019
A directed graph is primitive of exponent t if it contains walks of length t between all pairs of vertices, and t is minimal with this property. Moreover, it is exponent-critical if the deletion of any arc results in an imprimitive graph or in a ...
Olga O'Mahony, Rachel Quinlan
doaj   +2 more sources

On the critical exponent of generalized Thue-Morse words [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2007
Automata, Logic and ...
Alexandre B. Massé   +3 more
doaj   +4 more sources

Critical variable exponent functionals in image restoration

open access: yesApplied Mathematics Letters, 2013
We study a variable exponent model for image restoration in the case that the exponent attains the critical value one. We prove existence and Γ-convergence. The results answer an open question by Li, Li and Pi [F. Li, Z. Li, L.
Hästö, P.   +3 more
exaly   +2 more sources

On the critical exponent of transversal matroids

open access: yesJournal of Combinatorial Theory, Series B, 1984
It is shown that loopless transveral matroids have critical exponent at most ...
Whittle, Geoffrey P
core   +3 more sources

Exponent-Critical Groups

open access: yesJournal of Group Theory
We define and investigate the property of being `exponent-critical' for a finite group. A finite group is said to be exponent-critical if its exponent is not the least common multiple of the exponents of its proper non-abelian subgroups.
Blackburn, Simon R.   +3 more
core   +2 more sources

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