Results 81 to 90 of about 992,721 (210)
Foliation of null cones by surfaces of constant spacetime mean curvature near MOTS
Journal of the London Mathematical Society, Volume 114, Issue 5, November 2026.Abstract Marginally outer trapped surfaces (MOTS) in spacetimes are well‐known to indicate the existence of black holes. Using flow techniques, we prove that a neighbourhood of a stable MOTS in a null cone may be foliated by hypersurfaces of constant spacetime mean curvature.
Ben Lambert, Julian Scheuer
wiley +1 more source
A note on the convexity of the Moore–Penrose inverse
Linear Algebra and its Applications, 2018 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire +1 more source
Biometrical Journal, Volume 68, Issue 5, October 2026.ABSTRACT Estimates of national immunization coverage (ENIC) are crucial for guiding policy and decision‐making in national immunization programs and setting the global immunization agenda. World Health Organization (WHO) and UNICEF estimates of national immunization coverage (WUENIC) are produced annually for various vaccine–dose combinations and all ...
C. Edson Utazi +6 more
wiley +1 more source
Some Results on Generalized Inverse of Intuitionistic Fuzzy Matrices
Fuzzy Information and Engineering, 2014 In this paper, pseudo-similar intuitionistic fuzzy matrix (IFM) is defined with some properties of pseudo-similar and semi-similar IFMs studied. Here it is shown that, the pseudo-similarity relation preserve idempotency and regularity for the IFMs. After
R. Pradhan, M. Pal
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The generalized Moore-Penrose inverse of the morphism with generalized factorization in category
, 2007 研究范畴中态射的加权Moore-Penrose逆,利用态射广义分解的性质给出了态射加权Moore-Penrose逆存在的一些充要条件,导出了态射的加权Moore-Penrose逆的表达式,推广了态射Moore-Penrose逆的相应结果. The generalized Moore-Penrose inverse of the morphism is studied.
刘晓冀, 刘三阳
core
Singular matrices possessing the triangle property
Special MatricesIt 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
Parallelism between Moore-Penrose inverse and Aluthge transformation of operators
, 2018 In this paper we study some parallelisms between ?-Aluthge transform and binormal operators on a Hilbert space via the Moore-Penrose inverse. Moreover, we give some applications of these results on the Lambert multiplication operators acting on L2(?).
H. Emamalipour +2 more
core +1 more source
Dykstra's Algorithm and a Representation of the Moore–Penrose Inverse
Journal of Approximation Theory, 2002 The convergence of Lardy's series representation of the Moore-Penrose inverse of a closed unbounded linear operator is proved via Dykstra's alternating projection algorithm.
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Efficient GMM estimation with singular system of moment conditions
Statistical Theory and Related Fields, 2020 Standard generalised method of moments (GMM) estimation was developed for nonsingular system of moment conditions. However, many important economic models are characterised by singular system of moment conditions.
Zhiguo Xiao
doaj +1 more source
A generalization of the Moore-Penrose inverse related to matrix subspaces of C(nxm)
, 2010 A natural generalization of the classical Moore-Penrose inverse is presented. The so-called S-Moore-Penrose inverse of a m x n complex matrix A, denoted by As, is defined for any linear subspace S of the matrix vector space Cnxm.
González Sánchez, Luis +3 more
core +1 more source