Results 71 to 80 of about 644 (117)
Space distribution of a weed seedbank in a bean cultivation area [PDF]
Biotemas, 2009 The objective of this work was to elucidate the characteristics of space distribution of a weed seedbank in order to assist in decision-making for the adoption of management techniques applied to an area under bean monoculture.
Jefferson Luis Meirelles Coimbra +5 more
doaj
Distributive and Dual Distributive Elements in Hyperlattices
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2017 In this paper we introduce and study distributive elements, dual distributive elements in hyperlattices, and prove that these elements forms ∧-semi lattice and ∨-semi hyperlattice, respectively.
Ameri Reza +3 more
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IEEE Access, 2018 This paper is concerned with the numerical solutions of the general matrix equation $\sum ^{p}_{i=1}{\sum ^{s_{i}}_{j=1} }\,\,{A_{ij}X_{i}}{B_{ij}} = C$ , and the general discrete-time periodic matrix equations $\sum ^{p}_{i=1}\sum ^{s_{i}}_{j=1} (A_{i,
Basem I. Selim, Lei Du, Bo Yu
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Simplicity of generic Steiner bundles [PDF]
, 2005 We prove that a generic Steiner bundle E is simple if and only if the Euler characteristic of the endomorphism bundle of E is less or equal to 1. In particular we show that either E is exceptional or it satisfies the following inequality t\leq(\frac{n+1+\
Brambilla, Maria Chiara
core
Solutions of the system of operator equations $BXA=B=AXB$ via $*$-order
, 2017 In this paper, we establish some necessary and sufficient conditions for the existence of solutions to the system of operator equations $ BXA=B=AXB $ in the setting of bounded linear operators on a Hilbert space, where the unknown operator $X$ is called ...
Moslehian, Mohammad Sal, Vosough, Mehdi
core +1 more source
Prime filters of hyperlattices
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016 The purpose of this paper is the study of prime ideals and prime filters in hyperlattices. I-filter and the filter generated by a ∈ L are introduced. Moreover, we introduce dual distributive hyperlattices, and I-filter in dual distributive hyperlattices.
Ameri Reza +3 more
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The general solution to a system of adjointable operator equations over Hilbert C^∗-modules
, 2011 We establish necessary and sufficient conditions for the existence of solution to the system of adjointable operator equations A1X = D1,XB2 = D2,A3XB3 +B3X ∗C3 = D3 over the Hilbert C∗ -modules.
Qing-Wen Wang, Chang-Zhou Dong
semanticscholar +1 more source
Matrix equation representation of the convolution equation and its unique solvability
Special MatricesWe consider the convolution equation F*X=BF* X=B, where F∈R3×3F\in {{\mathbb{R}}}^{3\times 3} and B∈Rm×nB\in {{\mathbb{R}}}^{m\times n} are given and X∈Rm×nX\in {{\mathbb{R}}}^{m\times n} is to be determined. The convolution equation can be regarded as a
Satake Yuki +3 more
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Perturbation analysis of the stochastic algebraic Riccati equation
, 2013 In this paper we study a general class of stochastic algebraic Riccati equations (SARE) arising from the indefinite linear quadratic control and stochastic H∞ problems.
Chun-Yueh Chiang +3 more
semanticscholar +1 more source
Determinant Identities and the Geometry of Lines and Circles
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2014 The focus of this note is the nontrivial determinant identities which typically underlie the complex analytic proofs of all the results in the plane geometry of lines and circles.
Anghel Nicolae
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