Results 1 to 10 of about 4,933,444 (199)

Teenage patients with ingrown toenails: Treatment with partial matrix excision or segmental phenolization

open access: yesIndian Journal of Dermatology, 2013
Background: Ingrown toenails (IT) is a very common problem leading to significant associated morbidity. The articles related to phenolization for matrix removal in teenagers with IT are not enough in the foot surgery literature.
Murat Korkmaz   +4 more
doaj   +3 more sources

Partial Matrix Completion [PDF]

open access: yesAdvances in Neural Information Processing Systems 36, 2023
The matrix completion problem aims to reconstruct a low-rank matrix based on a revealed set of possibly noisy entries. Prior works consider completing the entire matrix with generalization error guarantees. However, the completion accuracy can be drastically different over different entries.
Elad Hazan   +4 more
openaire   +5 more sources

Matrix-free preconditioning using partial matrix estimation [PDF]

open access: yesBIT Numerical Mathematics, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Cullum, J. K., Tůma, M. (Miroslav)
openaire   +4 more sources

Some Results on Characterizations of Matrix Partial Orderings [PDF]

open access: yesJournal of Applied Mathematics, 2014
Some characterizations of the left-star, right-star, and star partial orderings between matrices of the same size are obtained. Based on those results, several characterizations of the star partial ordering between EP matrices are given.
Hongxing Wang, Jin Xu
doaj   +3 more sources

Non-commutative partial matrix convexity [PDF]

open access: yesIndiana University Mathematics Journal, 2008
Let $p$ be a polynomial in the non-commuting variables $(a,x)=(a_1,...,a_{g_a},x_1,...,x_{g_x})$. If $p$ is convex in the variables $x$, then $p$ has degree two in $x$ and moreover, $p$ has the form $p = L + Λ^T Λ,$ where $L$ has degree at most one in $x$ and $Λ$ is a (column) vector which is linear in $x,$ so that $Λ^TΛ$ is a both sum of squares and ...
Hay, Damon M.   +3 more
openaire   +4 more sources

Estimating the two-particle K-matrix for multiple partial waves and decay channels from finite-volume energies [PDF]

open access: yesNuclear Physics B, 2017
An implementation of estimating the two-to-two K-matrix from finite-volume energies based on the Lüscher formalism and involving a Hermitian matrix known as the “box matrix” is described.
Colin Morningstar   +6 more
doaj   +2 more sources

Partial matrix contractions and intersections of matrix balls

open access: yesLinear Algebra and its Applications, 1992
For a rectangular matrix \(C\), let \(s_ 1(C) \geq s_ 2(C) \geq \dots\) denote the singular values of \(C\), let \(\| C\| = s_ 1(C)\), and when \(\| C\| \leq 1\), define \(D_ C = \sqrt{I - C^* C}\). Fix \(n \times k\) \(A\) and \(p \times m\) \(B\) and let \(\mathcal M\) be the set of all \(X\) such that there exists \(Y\) for which \(\| \left[ {A\atop
Nævdal, Geir, Woerdeman, Hugo J.
openaire   +3 more sources

The Q0-matrix completion problem [PDF]

open access: yesArab Journal of Mathematical Sciences, 2021
A matrix is a Q0-matrix if for every k∈{1,2,…,n}, the sum of all k×k principal minors is nonnegative. In this paper, we study some necessary and sufficient conditions for a digraph to have Q0-completion. Later on we discuss the relationship between Q and
Kalyan Sinha
doaj   +1 more source

Partial Order in Matrix Nearrings [PDF]

open access: yesBulletin of the Iranian Mathematical Society, 2022
AbstractLet N be a zero-symmetric (right) nearring with identity. We introduce a partial order in the matrix nearring corresponding to the partial order (defined by Pilz in Near-rings: the theory and its applications, North Holland, Amsterdam, 1983) in N. A positive cone in a matrix nearring is defined and a characterization theorem is obtained.
Tapatee Sahoo   +4 more
openaire   +1 more source

End-to-end Learning the Partial Permutation Matrix for Robust 3D Point Cloud Registration [PDF]

open access: yesAAAI Conference on Artificial Intelligence, 2021
Even though considerable progress has been made in deep learning-based 3D point cloud processing, how to obtain accurate correspondences for robust registration remains a major challenge because existing hard assignment methods cannot deal with outliers ...
Zhiyuan Zhang   +5 more
semanticscholar   +1 more source

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