Results 71 to 80 of about 2,610,164 (335)
FEBS Open Bio, EarlyView.The contrast transfer function (CTF) is an imaging aberration that is a major resolution‐limiting factor in cryo‐electron microscopy (cryo‐EM). Precise CTF estimation is key to overcoming this limitation, but is particularly challenging in cryo‐electron tomography (cryo‐ET) data. Here, we present an approach for using geometric information to assist in
Sagar Khavnekar, William Wan
wiley +1 more source
Inversion of Parahermitian matrices [PDF]
, 2010 Parahermitian matrices arise in broadband multiple-input multiple-output (MIMO) systems or array processing, and require inversion in some instances. In this paper, we apply a polynomial eigenvalue decomposition obtained by the sequential best rotation ...
Millar, Andrew P. +2 more
core
The role of circular RNAs in regulating cytokine signaling in cancer
FEBS Open Bio, EarlyView.Cytokines present in the tumor microenvironment fuel cancer development. Aberrant expression of circRNAs contributes to cancer progression. Cytokines are involved in regulating circRNA biogenesis. Furthermore, aberrantly expressed circRNAs regulate the expression of ligands, receptors, and downstream effectors involved in cytokine signaling to promote ...
Vandana Joshi +4 more
wiley +1 more source
Some consequences of the rank normal form of a matrix
Acta Universitatis Sapientiae: Mathematica, 2019 If A is a rectangular matrix of rank r, then A may be written as PSQ where P and Q are invertible matrices and s=(IrOOO)s = \left( {\matrix{ \hfill {{{\rm{I}}_{\rm{r}}}} & \hfill {\rm{O}} \cr \hfill {\rm{O}} & \hfill {\rm{O}} \cr } } \right).
Rădulescu Sorin +2 more
doaj +1 more source
Approximate Biprojectivity of ℓ1-Munn Banach Algebras
Journal of Mathematics, 2022 In the present paper, we study the approximate biprojectivity and weak approximate biprojectivity of ℓ1-Munn Banach algebras when the related sandwich matrix is regular over InvA.
G. Zarei +3 more
doaj +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objectives To investigate whether pulse pressure or mean arterial pressure mediates the relationship between age and white matter hyperintensity load and to examine the mediating effect of white matter hyperintensities on cognition. Methods Demographic information, blood pressure, current medication lists, and Montreal Cognitive Assessment ...
Jade Hannan +8 more
wiley +1 more source
Determining the Inverse of a Matrix over Min-Plus Algebra
JTAM (Jurnal Teori dan Aplikasi Matematika)Linear algebra over the semiring R_ε with ⊗ (plus) and ⨁ (maximum) operations which is known as max-plus algebra. One of the isomorphic with this algebra is a min-plus algebra.
Siswanto Siswanto, Anggrina Gusmizain
doaj +1 more source
Counting invertible Schr\"odinger Operators over Finite Fields for Trees, Cycles and Complete Graphs [PDF]
, 2015 We count invertible Schr\"odinger operators (perturbations by diagonal matrices of the adjacency matrix) over finite fieldsfor trees, cycles and complete graphs.This is achieved for trees through the definition and use of local invariants (algebraic ...
Bacher, Roland
core
(Co)isotropic Pairs in Poisson and Presymplectic Vector Spaces
, 2015 We give two equivalent sets of invariants which classify pairs of coisotropic subspaces of finite-dimensional Poisson vector spaces. For this it is convenient to dualize; we work with pairs of isotropic subspaces of presymplectic vector spaces.
Lorand, Jonathan, Weinstein, Alan
core +1 more source
A deterministic algorithm for inverting a polynomial matrix
Journal of Complexity, 2015 Abstract Improved cost estimates are given for the problem of computing the inverse of an n × n matrix of univariate polynomials over a field. A deterministic algorithm is demonstrated that has worst case complexity ( n 3 s ) 1 + o ( 1 ) field operations, where s ≥ 1 is an upper bound for the average ...
Arne Storjohann, Wei Zhou, George Labahn
openaire +2 more sources