Results 81 to 90 of about 21,096,303 (314)

A novel approach to establishing uniqueness of solutions in linear complementarity problems

open access: yesMathematics Open
Linear complementarity problems are fundamental in various mathematical fields, and it is widely recognized that these problems have a unique solution if and only if the matrix related to them is a P-matrix.
Yamna Achik   +2 more
doaj   +1 more source

Interrogating the immune landscape of microsatellite stable RAS‐mutated colon cancer

open access: yesMolecular Oncology, EarlyView.
COLOSSUS project RAS‐mutated MSS colon cancer study explored transcriptomics and immune cell density by immunohistochemistry (IHC), Immunoscore (IS), ISIC/TuLIS scores, mutation counts, and detected different prevalences but similar microenvironment composition across immune markers with clinical relevance for future immunotherapy combination ...
Rodrigo Dienstmann   +61 more
wiley   +1 more source

MATRIX p-NORMS ARE NP-HARD TO APPROXIMATE IF p not equal to 1, 2, infinity

open access: yes, 2010
We show that, for any rational p ∈ [1,∞) [p is an element of the set [1, infinity)] except p = 1, 2, unless P = NP, there is no polynomial time algorithm which approximates the matrix p-norm to arbitrary relative precision.
Olshevsky, A.   +4 more
core   +1 more source

Intersecting branes in matrix theory [PDF]

open access: yes, 1998
We construct BPS states in the matrix description of M-theory. Starting from a set of basic M-theory branes, we study pair intersections which preserve supersymmetry.
Panda, S.,   +5 more
core   +1 more source

Matrix-Based Ramanujan-Sums Transforms

open access: yes, 2022
In this letter, we study the Ramanujan Sums (RS) transform by means of matrix multiplication. The RS are orthogonal in nature and therefore offer excellent energy conservation capability.
Sridhar Krishnan (14025273)   +2 more
core   +1 more source

P-Matrix analysis of the dibaryon1 D 2 resonance

open access: yesZeitschrift für Physik C Particles and Fields, 1984
We study the relation between intermediate energy nucleon-nucleon scattering and the eigenstates of the bag model using theP-matrix formalism. Data of existing phase-shift analyses are employed to calculate theP-matrix for the coupled1D2(pp) and5S2(NΔ) channels in the energy region above the Δ-isobar production threshold. TheP-matrix calculated for the
I. L. Grach   +2 more
openaire   +1 more source

IMPDH inhibition enhances cytarabine efficacy in SAMHD1‐expressing leukaemia cells via guanine nucleotide depletion

open access: yesMolecular Oncology, EarlyView.
Cytarabine is a key therapy for acute myeloid leukaemia (AML), but its efficacy is limited by the dNTPase SAMHD1, which hydrolyses its active metabolite. Screening nucleotide biosynthesis inhibitors revealed that IMPDH inhibitors selectively sensitise SAMHD1‐proficient AML cells to cytarabine.
Miriam Yagüe‐Capilla   +9 more
wiley   +1 more source

A matrix derivation of a representation theorem for (trAp)1/p

open access: yes, 1989
A matrix derivation of a well-known representation theorem for (tr Ap)1/p is given, which is the solution of a restricted maximization problem.
Neudecker, Heinz
core   +1 more source

New accelerated modulus-based iteration method for solving large and sparse linear complementarity problem

open access: yesJournal of Numerical Analysis and Approximation Theory
For the large and sparse linear complementarity problem, we provide a family of new accelerated modulus-based iteration methods in this article. We provide some sufficient  criteria for the convergence analysis when the  system matrix is a \(P\)-matrix ...
Bharat Kumar, Deepmala, A. K. Das
doaj   +1 more source

Compact matrix operators on a new sequence space related to ℓ p $\ell_{p}$ spaces

open access: yesJournal of Inequalities and Applications, 2016
In this paper, we derive some identities or estimates for the operator norms and the Hausdorff measures of noncompactness of certain matrix operators on the sequence space ℓ p ( r , s , t ; B ( m ) ) $\ell_{p}(r,s,t;B^{(m)})$ which is related to ℓ p ...
Abdullah Alotaibi   +2 more
doaj   +1 more source

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