Results 21 to 30 of about 1,572,263 (313)

Lipschitz Extensions to Finitely Many Points

open access: yesAnalysis and Geometry in Metric Spaces, 2018
We consider Lipschitz maps with values in quasi-metric spaces and extend such maps to finitely many points. We prove that in this context every 1-Lipschitz map admits an extension such that its Lipschitz constant is bounded from above by the number of ...
Basso Giuliano
doaj   +1 more source

Invers Moore-Penrose pada Matriks Turiyam Simbolik Real

open access: yesJambura Journal of Mathematics, 2023
The symbolic Turiyam matrix is a matrix whose entries contain symbolic Turiyam. Inverse matrices can generally be determined if the matrix is a non-singular square matrix. Currently the inverse of the symbolic Turiyam matrix of size m × n with m 6= n can
Ani Ani, Mashadi Mashadi, Sri Gemawati
doaj   +1 more source

An inequality for the hadamard product of an M-matrix and an inverse M-matrix

open access: yesLinear Algebra and its Applications, 1988
Let A and B be M-matrices and let \(A\circ B=[a_{ik}b_{ik}]\) be their Hadamard product. The authors obtain the following estimates from below for the smallest eigenvalue \(q(A\circ B^{-1}):\) \[ (a)\quad q(A\circ B^{-1})\geq (q(A)/q(B))(\min_ iu_ iv_ i/\sum_{i}u_ iv_ i), \] where u and v are the left and the right Perron eigenvectors of B ...
Fiedler, M., Markham, Thomas L.
openaire   +2 more sources

miR-200b restrains EMT and aggressiveness and regulates matrix composition depending on ER status and signaling in mammary cancer

open access: yesMatrix Biology Plus, 2020
Secreted microRNAs (miRNAs) reside in a complex regulatory network with extracellular matrix (ECM) macromolecules, which affect cell-cell communication, therefore miRNA expression highlights its significance in several aspects of human diseases ...
Zoi Piperigkou   +4 more
doaj   +1 more source

Nonnegative matrix factorization requires irrationality [PDF]

open access: yes, 2017
Nonnegative matrix factorization (NMF) is the problem of decomposing a given nonnegative n × m matrix M into a product of a nonnegative n × d matrix W and a nonnegative d × m matrix H. A longstanding open question, posed by Cohen and Rothblum in 1993, is
Chistikov, Dmitry   +4 more
core   +2 more sources

182. Progress towards an EBV vaccine: Results of a Phase I, First-In-Human EBV gp350 Ferritin Nanoparticle Vaccine Candidate adjuvanted with Matrix-M® [PDF]

open access: goldOpen Forum Infect Dis
Jessica Durkee-Shock   +19 more
europepmc   +2 more sources

The symmetric inverse M-matrix completion problem

open access: yesLinear Algebra and its Applications, 1999
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Johnson, Charles R., Smith, Ronald L.
openaire   +1 more source

M-matrix generalized inverses of M-matrices

open access: yesLinear Algebra and its Applications, 1997
The condition when the group inverse of the associated singular irreducible \(M\)-matrix corresponding to a nonnegative, irreducible and stochastic matrix will be an \(M\)-matrix is that this matrix lies in a small wedge about a rank one nonnegative matrix.
Chen, Yonghong, Neumann, M.
openaire   +2 more sources

The M-matrix group inverse problem for distance-biregular graphs

open access: yesComputational and Applied Mathematics, 2023
AbstractIn this work, we obtain the group inverse of the combinatorial Laplacian matrix of distance-biregular graphs. This expression can be obtained trough the so-called equilibrium measures for sets obtained by deleting a vertex. Moreover, we show that the two equilibrium arrays characterizing distance-biregular graphs can be expressed in terms of ...
Abiad Monge, Aida   +3 more
openaire   +3 more sources

New bounds for the minimum eigenvalue of M-matrices

open access: yesOpen Mathematics, 2016
Some new bounds for the minimum eigenvalue of M-matrices are obtained. These inequalities improve existing results, and the estimating formulas are easier to calculate since they only depend on the entries of matrices.
Wang Feng, Sun Deshu
doaj   +1 more source

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