Results 121 to 130 of about 581 (209)

The Stability of the Unit Balls of Symmetric and Unitarily Invariant Norms

open access: yes, 1994
A compact convex set #KAPPA# is called stable if the midpoint mapping, #KAPPA#x#KAPPA##->##KAPPA#, (#chi#,#gamma#)#->#(#chi#+#gamma#)/2, is open.
Sa, E. Marques (Dep. de Matematica, Univ. de Coimbra, 3000 Coimbra (Portugal))
core  

Low-Complexity Alternatives to the Optimal Linear Coding Scheme for Transmitting ARMA Sources. [PDF]

open access: yesEntropy (Basel), 2022
Gutiérrez-Gutiérrez J   +3 more
europepmc   +1 more source

The separation modulus of unitarily invariant matrix norms

open access: yes
If $X=(M_n(\mathbb{R}),\|\cdot\|)$ is a unitarily invariant normed space on , then we prove (via exact computations for a Jacobi orthogonal random matrix ensemble) that the spectral gap of the Laplacian with Dirichlet boundary conditions on the unit ball $B_X$ of $X$ satisfies $λ(X)\asymp n^3 \|I\|^2$.
Gunes, Mustafa Alper, Naor, Assaf
openaire   +2 more sources

Efficient Unitary Designs with a System-Size Independent Number of Non-Clifford Gates. [PDF]

open access: yesCommun Math Phys, 2023
Haferkamp J   +5 more
europepmc   +1 more source

The UV prolate spectrum matches the zeros of zeta. [PDF]

open access: yesProc Natl Acad Sci U S A, 2022
Connes A, Moscovici H.
europepmc   +1 more source

Chebyshev centers and radii for sets induced by quadratic matrix inequalities. [PDF]

open access: yesMath Control Signal Syst
Shakouri A, van Waarde HJ, Camlibel MK.
europepmc   +1 more source

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