Results 51 to 60 of about 676 (93)

Asymptotic dimension for covers with controlled growth

open access: yesJournal of the London Mathematical Society, Volume 111, Issue 1, January 2025.
Abstract We prove various obstructions to the existence of regular maps (or coarse embeddings) between commonly studied spaces. For instance, there is no regular map (or coarse embedding) Hn→Hn−1×Y$\mathbb {H}^n\rightarrow \mathbb {H}^{n-1}\times Y$ for n⩾3$n\geqslant 3$, or (T3)n→(T3)n−1×Y$(T_3)^n \rightarrow (T_3)^{n-1}\times Y$ whenever Y$Y$ is a ...
David Hume   +2 more
wiley   +1 more source

Optimising Control Device Luring Strategies for Invasive Predator Control: A Modelling Approach

open access: yesEcology and Evolution, Volume 14, Issue 12, December 2024.
Invasive predators pose a threat to native biodiversity, and their management is hindered by trap‐shyness. Using Bayesian estimation, researchers quantified trap‐shyness in wild brushtail possums, finding a large number of trap‐shy individuals with a low probability of trap interaction.
Giorgia Vattiato   +5 more
wiley   +1 more source

Weighted Sums of Subexponential Random Variables and Asymptotic Dependence between Returns on Reinsurance Equities [PDF]

open access: yes, 2004
Asymptotic tail probabilities for bivariate linear combinations of subexponential random variables are given. These results are applied to explain the joint movements of the stocks of reinsurers.
Geluk, J.L. (Jaap)   +1 more
core   +2 more sources

Boundary Strichartz estimates and pointwise convergence for orthonormal systems

open access: yesTransactions of the London Mathematical Society, Volume 11, Issue 1, December 2024.
Abstract We consider maximal estimates associated with fermionic systems. Firstly, we establish maximal estimates with respect to the spatial variable. These estimates are certain boundary cases of the many‐body Strichartz estimates pioneered by Frank, Lewin, Lieb and Seiringer.
Neal Bez   +2 more
wiley   +1 more source

Rationalizing the Amplified Spontaneous Emission Mechanism in CsPbBr3 Perovskite Nanocrystals Films by means of Optical Gain Measurements

open access: yesAdvanced Optical Materials, Volume 12, Issue 27, September 23, 2024.
CsPbBr3 perovskite nanocrystal thin films display a distinctive Amplified Spontaneous Emission (ASE) behavior, where an anomalously shifted ASE band coexists with an excessive fluorescence background. This work shows that this behavior stems from four processes: reabsorption due to ground and excited state absorption, excitation of differently ...
Stefania Milanese   +4 more
wiley   +1 more source

Subexponential concurrent constraint programming

open access: yesTheoretical Computer Science, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Pimentel, Elaine Gouvea   +2 more
openaire   +3 more sources

Uniform asymptotics for the tail probability of weighted sums with heavy tails [PDF]

open access: yes, 2014
This paper studies the tail probability of weighted sums of the form $\sum_{i=1}^n c_i X_i$, where random variables $X_i$'s are either independent or pairwise quasi-asymptotical independent with heavy tails.
Zhang, Chenhua
core   +2 more sources

On the length of nonsolutions to equations with constants in some linear groups

open access: yesBulletin of the London Mathematical Society, Volume 56, Issue 7, Page 2338-2349, July 2024.
Abstract We show that for any finite‐rank–free group Γ$\Gamma$, any word‐equation in one variable of length n$n$ with constants in Γ$\Gamma$ fails to be satisfied by some element of Γ$\Gamma$ of word‐length O(log(n))$O(\log (n))$. By a result of the first author, this logarithmic bound cannot be improved upon for any finitely generated group Γ$\Gamma$.
Henry Bradford   +2 more
wiley   +1 more source

Asymptotics in the symmetrization inequality [PDF]

open access: yes
We give a sufficient condition for i.i.d. random variablesX1,X2 in order to have P{X1-X2>x} ~ P{|X1|>x}as x tends to infinity. A factorization property forsubexponential distributions is used in the proof. In a subsequentpaper the results will be applied
Geluk, J.L.
core   +1 more source

On asymptotic scales of independently stopped random sums [PDF]

open access: yes, 2014
We study randomly stopped sums via their asymptotic scales. First, finiteness of moments is considered. To generalise this study, asymptotic scales applicable to the class of all heavy-tailed random variables are used.
Lehtomaa, Jaakko
core  

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