Results 31 to 40 of about 629 (50)

Rank-Revealing QR Factorizations and the Singular Value Decomposition

, 1992
T. Chan has noted that, even when the singular value decomposition of a matrix A is known, it is still not obvious how to find a rank-revealing QR factorization (RRQR) of A if A has numerical rank deficiency. This paper offers a constructive proof of the
Y. Hong, C. Pan
semanticscholar   +1 more source

On an argument of J.--F. Cardoso dealing with perturbations of joint diagonalizers

, 2012
B. Afsari has recently proposed a new approach to the matrix joint diagonalization, introduced by J.--F. Cardoso in 1994, in order to investigate the independent component analysis and the blind signal processing in a wider prospective.
Russo, Francesco G.
core   +1 more source

On the rate of convergence of the image space reconstruction algorithm

, 2009
The Image Space Reconstruction Algorithm (ISRA) of Daube–Witherspoon and Muehllehner is a multiplicative algorithm for solving nonnegative least squares problems. Eggermont has proved the global convergence of this algorithm.
Jianda Han, Lixing Han, M. Neumann, Upendra Prasad   +3 more
semanticscholar   +1 more source

Can one factor the classical adjoint of a generic matrix?

, 2004
Let k be a field, n a positive integer, X a generic nxn matrix over k (i.e., a matrix (x_{ij}) of n^2 independent indeterminates over the polynomial ring k[x_{ij}]), and adj(X) its classical adjoint. It is shown that if char k=0 and n is odd, then adj(X)
Bergman, George M.
core   +2 more sources

Evaluating AT,S(2)A_{T,S}^{\left( 2 \right)} Matrix Inverses from full-rank Singular Value Decomposition

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica
Based on the compact SVD decomposition of the full rank of a predetermined matrix M, a method for calculating the inverses AT,S(2)A_{T,S}^{\left( 2 \right)} of matrix A is derived. As a consequence, the advantages of compact single value decompositions
Stanimirović Ivan
doaj   +1 more source

Obtaining Medical Textiles Based on Viscose and Chitosan/Zinc Nanoparticles with Improved Antibacterial Properties by Using a Dielectric Barrier Discharge. [PDF]

Polymers (Basel), 2022
Korica MD, Kramar A, Peršin Fratnik Z, Obradović B, Kuraica MM, Dojčinović B, Fras Zemljič L, Kostić M.   +7 more
europepmc   +1 more source

Insights into the missing apiosylation step in flavonoid apiosides biosynthesis of Leguminosae plants. [PDF]

Nat Commun, 2023
Wang HT, Wang ZL, Chen K, Yao MJ, Zhang M, Wang RS, Zhang JH, Ågren H, Li FD, Li J, Qiao X, Ye M.   +11 more
europepmc   +1 more source

Chitosan Nanoparticles Functionalized Viscose Fabrics as Potentially Durable Antibacterial Medical Textiles. [PDF]

Materials (Basel), 2021
Korica M, Peršin Z, Fras Zemljič L, Mihajlovski K, Dojčinović B, Trifunović S, Vesel A, Nikolić T, Kostić MM.   +8 more
europepmc   +1 more source

Lower bounds for the low-rank matrix approximation. [PDF]

J Inequal Appl, 2017
Li J, Liu Z, Li G.
europepmc   +1 more source

Influence of Different Pretreatments on the Antibacterial Properties of Chitosan Functionalized Viscose Fabric: TEMPO Oxidation and Coating with TEMPO Oxidized Cellulose Nanofibrils. [PDF]

Materials (Basel), 2019
Korica M, Peršin Z, Trifunović S, Mihajlovski K, Nikolić T, Maletić S, Fras Zemljič L, Kostić MM.   +7 more
europepmc   +1 more source