Results 291 to 300 of about 1,280,473 (359)

Composition Operators and Multiplication Operators on Orlicz Spaces

open access: yesپژوهش‌های ریاضی, 2015
Y Estaremi, S Shamsi Gomechi
doaj  

Spectral Properties of a Multiplication Operator

Mathematische Nachrichten, 1996
AbstractIn this note we study the spectral properties of a multiplication operator in the space Lp(X)m which is given by an m by m matrix of measurable functions. Our particular interest is directed to the eigenvalues and the isolated spectral points which turn out to be eigenvalues.
V. Hardt, Ekkehard Wagenführer
semanticscholar   +3 more sources

Accelerating Sparse LU Factorization with Density-Aware Adaptive Matrix Multiplication for Circuit Simulation

Design Automation Conference, 2023
Sparse LU factorization is considered to be one of the most time-consuming components in circuit simulation, particularly when dealing with circuits of considerable size in the advanced process era.
Tengcheng Wang   +5 more
semanticscholar   +1 more source

Multiplication Operators

2023
AbstractWe discuss multiplication operators Mφf = φf on L2(μ), where μ is a finite positive Borel measure on a compact set in ℂ and φ is a μ-essentially bounded function. These operators represent normal operators on Hilbert spaces via the spectral theorem.
Stephan Ramon Garcia   +2 more
openaire   +1 more source

Multiplicative Commutators of Operators

Canadian Journal of Mathematics, 1966
An invertible operator T on a Hilbert space is a multiplicative commutator if there exist invertible operators A and B on such that T = ABA–1B–1. In this paper we discuss the question of which operators are, and which are not, multiplicative commutators.
Brown, Arlen, Pearcy, Carl
openaire   +1 more source

Multiplication Operators

Canadian Journal of Mathematics, 1989
Let V(x) ≧ 0 be given on Rn and defineThis constant has played a role in many investigation. For n — 3 it was shown in Courant-Hilbert [7] p. 446 that In [10], Kato estimates C2,2,2,ƛ(V) in terms of the L2 +L∞ norm of V in R3. Stummel [22] showed that C2,2,2,1(V) is bounded by in Rn, n > 2, provided α < 4. Browder [6] and Balslev [3] showed that
openaire   +1 more source

MULTIPLE OPERATIONS FOR STRABISMUS

Australian and New Zealand Journal of Ophthalmology, 1980
Some examples will be noted where the strabismus surgeon plans the patient to have more than one operation. Unfortunately most multistage strabismus procedures are unplanned and are a consequence of failure of the initial surgery. The three most common causes of such failure will be discussed.
openaire   +2 more sources

Multiplication and Compact-friendly Operators

Positivity, 1997
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Abramovich, Y. A.   +2 more
openaire   +1 more source

Classes of Multiplication Operators and Their Limit Operators

Zeitschrift für Analysis und ihre Anwendungen, 2004
Limit operators have proven to be a device for the study of several properties of an operator including Fredholmness and invertibility at infinity, but also the applicability of approximation methods. For band-dominated operators, the question of existence and structure of their limit operators essentially reduces to the study of multiplication ...
openaire   +2 more sources

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