Results 71 to 80 of about 2,351,945 (200)

RaxML input matrix, inverse exclusion matrix for matrix “>3.3_excluded”, includes only 943 sites with AIR rate >3.3

open access: yes, 2014
RaxML input matrix, inverse exclusion matrix for matrix “>3.3_excluded”, includes only 943 sites with AIR rate >3.
Straub, Shannon C. K.   +11 more
core   +1 more source

RaxML input matrix, inverse exclusion matrix for matrix “>3.0_excluded”, includes only 2,435 sites with AIR rate >3.0

open access: yes, 2014
RaxML input matrix, inverse exclusion matrix for matrix “>3.0_excluded”, includes only 2,435 sites with AIR rate >3.
Straub, Shannon C. K.   +11 more
core   +1 more source

Efficient Algorithm for Computing Inverse of Parametric Matrices

open access: yesScientific Annals of Computer Science
In this paper, we study and compute the inverse of matrices with parametric entries. We demonstrate that the Gauss-Jordan method can be extended to compute the inverse of parametric matrices, offering a powerful tool for solving systems of linear ...
Mahdi Dehghani Darmian
doaj   +1 more source

Symmetric Tridiagonal Inverse Quadratic Eigenvalue Problems with Partial Eigendata [PDF]

open access: yes, 2007
In this paper we concern the inverse problem of constructing the n-by-n real symmetric tridiagonal matrices C and K so that the monic quadratic pencil Q(¸) := ¸2I + ¸C + K (where I is the identity matrix) possesses the given partial eigendata.
白正简, Zheng-Jian Bai
core  

Perturbation Bound for the Drazin Inverse of the Matrix-Value Function

open access: yesAdvances in Mathematical Physics, 2019
The perturbation analysis of the differential for the Drazin inverse of the matrix-value function A(t)∈Cn×n is investigated. An upper bound of the Drazin inverse and its differential is also considered.
Yonghui Qin, Zhenshu Xie, Xiaoji Liu
doaj   +1 more source

Singular matrices possessing the triangle property

open access: yesSpecial Matrices
It is known that the inverse of an invertible real square matrix satisfying the triangle property is a tridiagonal matrix. In this note, results that may be considered as analogues of this assertion are obtained for the Moore-Penrose inverse and the ...
Priya K. Kranthi, Sivakumar K. C.
doaj   +1 more source

New Representations of the Group Inverse of 2×2 Block Matrices

open access: yesJournal of Applied Mathematics, 2013
This paper presents a full rank factorization of a 2×2 block matrix without any restriction concerning the group inverse. Applying this factorization, we obtain an explicit representation of the group inverse in terms of four individual blocks of the ...
Xiaoji Liu, Qi Yang, Hongwei Jin
doaj   +1 more source

Inverse problems for quantum trees

open access: yes, 2008
Three different inverse problems for the Schrodinger operator on a metric tree are considered, so far with standard boundary conditions at the vertices.
Avdonin, Sergei, Kurasov, Pavel,
core  

Maximum likelihood bootstrap tree for inverse exclusion matrix for matrix “>3.0_excluded”

open access: yes, 2014
Maximum likelihood bootstrap tree for inverse exclusion matrix for matrix “>3 ...
Straub, Shannon C. K.   +11 more
core   +1 more source

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