Results 41 to 50 of about 85 (82)

Relative Perturbation Bound for Invariant Subspaces of Indefinite Hermitian Matrix

, 1998
We give bound for the perturbations of invariant subspaces of nonsingular indefinite Hermitian matrix H under relative additive perturbations of H. Such perturbations include the case when the elements of H are known up to some relative tolerance.
Ivan Slapnicar, Ninoslav Truhar
core  

[Pseudotumoral peritoneal tuberculosis: about 14 cases]. [PDF]

Pan Afr Med J, 2022
Bouchaib AE, Drissi J, Babahabib A, Elhassani MEM, Kouach J.   +4 more
europepmc   +1 more source

Polynomial Numerical Hulls of Matrices

, 2007
. For any n-by-n complex matrix A, we use the joint numerical range W(A,A 2,..., A k) to study the polynomial numerical hull of order k of A, denoted by V k (A). We give an analytic description of V 2 (A) when A is normal.
Chi-kwong Li, Ler Davis, Abbas Salemi
core  

Sustainable Mortars for Application in the Cultural Heritage Field. [PDF]

Materials (Basel), 2021
Monaco M, Aurilio M, Tafuro A, Guadagnuolo M.   +3 more
europepmc   +1 more source

New norm and numerical radius bounds for accretive-dissipative operator matrices

Special Matrices
In operator and matrix theory, obtaining sharper bounds for quantities such as the operator norm and the numerical radius is of central importance. The main goal of this paper is to present new novel bounds that work for the norm and numerical radius of ...
Sababheh Mohammad, Moradi Hamid Reza
doaj   +1 more source

The advantages and synergistic effects of Gunnera (Gundelia tournefortii L.) extract and protexin in chicken production. [PDF]

Vet Med Sci, 2021
Gholami-Ahangaran M, Haj-Salehi M, Ahmadi-Dastgerdi A, Zokaei M.   +3 more
europepmc   +1 more source

A Note On The Field Of Values Of Non-Normal Matrices

, 2007
. It is shown that the distance from zero of the field of values of a matrix A depends on how large the departure from normality is compared to the distance from the zero of the field of values of the normal part of A.
Ilse C. F. Ipsen
core  

Heroin-Related Compounds and Metabolic Ratios in Postmortem Samples Using LC-MS-MS. [PDF]

J Anal Toxicol, 2021
Jakobsson G, Truver MT, Wrobel SA, Gréen H, Kronstrand R.   +4 more
europepmc   +1 more source

Dynamic right ventricular function response to incremental exercise in pulmonary hypertension. [PDF]

Pulm Circ, 2020
Singh I, Oliveira RKF, Heerdt P, Brown MB, Faria-Urbina M, Waxman AB, Systrom DM.   +6 more
europepmc   +1 more source

Effect of Low Versus High Tidal-Volume Total Liquid Ventilation on Pulmonary Inflammation. [PDF]

Front Physiol, 2020
Sage M, See W, Nault S, Morin C, Michalski C, Chabot B, Marouan S, Lavoie PM, Micheau P, Praud JP, Fortin-Pellerin É.   +10 more
europepmc   +1 more source