نتایج جستجو برای: numerical range
تعداد نتایج: 975001 فیلتر نتایج به سال:
Journal:
:Applied Mathematics Letters
1991
Journal:
:Journal of Mathematical Analysis and Applications
2006
Journal:
:Bulletin of the American Mathematical Society
1966
Journal:
:Linear Algebra and its Applications
2020
Journal:
:Journal of Computational Physics
2006
Journal:
:Mathematics of Computation
1982
Journal:
:Journal of Mathematical Analysis and Applications
2012
Journal:
:Linear & Multilinear Algebra
2022
For a subspace S of Cn and fixed basis, we study the compact convex set mS=convexhull {|s|2∈R≥0n:s∈S ‖s‖=1}≃{Diag(Y)∈Mnh(C):Y≥0,tr(Y)=1,PSYPS=Y}that call moment S, where |s|2=(|s1|2,|s2|2,…,|sn|2). This is relevant in determination minimal hermitian matrices (M∈Mnh such that ‖M+D‖≤D for every diagonal D spectral norm ‖⋅‖). We describe extremal points certain curves mS terms principal vectors mi...
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