Results 21 to 30 of about 3,962,404 (360)

On some properties of a generalized min matrix

open access: yesAIMS Mathematics, 2023
In this paper, we investigate a min matrix and obtain its $ LU $-decomposition, determinant, permanent, inverse, and norm properties. In addition, we obtain a recurrence relation provided by the characteristic polynomial of this matrix.
Emrah Polatlı
doaj   +1 more source

Inverse Campaigning [PDF]

open access: yesThe Economic Journal, 2003
"It can be advantageous for an office motivated party A to spend effort to make it public that a group of voters will lose from party A's policy proposal. Such effort is called inverse campaigning. The inverse campaigning equilibria are described for the case where the two parties can simultaneously reveal information publicly to uninformed voters ...
openaire   +6 more sources

Inverse melting and inverse freezing: a spin model [PDF]

open access: yes, 2005
Systems of highly degenerate ordered or frozen state may exhibit inverse melting (reversible crystallization upon heating) or inverse freezing (reversible glass transition upon heating).
Schupper, Nurith, Shnerb, Nadav M.
core   +1 more source

Inverse optimal transport [PDF]

open access: yes, 2019
Discrete optimal transportation problems arise in various contexts in engineering, the sciences and the social sciences. Often the underlying cost criterion is unknown, or only partly known, and the observed optimal solutions are corrupted by noise.
Stuart, Andrew M.   +1 more
core   +3 more sources

Bias correction for inverse variance weighting Mendelian randomization

open access: yesbioRxiv, 2022
Inverse-variance weighted two-sample Mendelian randomization (IVW-MR) is the most widely used approach that utilizes genome-wide association studies (GWAS) summary statistics to infer the existence and the strength of the causal effect between an ...
N. Mounier, Z. Kutalik
semanticscholar   +1 more source

Poisson inverse problems [PDF]

open access: yes, 2006
In this paper we focus on nonparametric estimators in inverse problems for Poisson processes involving the use of wavelet decompositions. Adopting an adaptive wavelet Galerkin discretization, we find that our method combines the well-known theoretical ...
Antoniadis, Anestis, Bigot, Jéremie
core   +5 more sources

Uniqueness result for a fractional diffusion coefficient identification problem

open access: yesBoundary Value Problems, 2019
In this paper, we establish an identifiability result for the coefficient identification problem in a fractional diffusion equation in a bounded domain from the observation of the Cauchy data on particular subsets of the boundary.
Fadhel Jday, Ridha Mdimagh
doaj   +1 more source

Non-commutative Stone duality: inverse semigroups, topological groupoids and C*-algebras [PDF]

open access: yes, 2012
We study a non-commutative generalization of Stone duality that connects a class of inverse semigroups, called Boolean inverse $\wedge$-semigroups, with a class of topological groupoids, called Hausdorff Boolean groupoids. Much of the paper is given over
Lawson, Mark V
core   +1 more source

An introduction to inverse probability of treatment weighting in observational research

open access: yesClinical Kidney Journal, 2021
In this article we introduce the concept of inverse probability of treatment weighting (IPTW) and describe how this method can be applied to adjust for measured confounding in observational research, illustrated by a clinical example from nephrology ...
N. Chesnaye   +6 more
semanticscholar   +1 more source

Some Results on Inverse Scattering [PDF]

open access: yes, 2007
A review of some of the author's results in the area of inverse scattering is given. The following topics are discussed: 1) Property $C$ and applications, 2) Stable inversion of fixed-energy 3D scattering data and its error estimate, 3) Inverse ...
Ramm, A. G.
core   +8 more sources

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