Results 51 to 60 of about 4,674,369 (143)
AxiomsLet ε>0 and TB(X×X) be the Banach algebra of all 2×2 bounded upper triangular operator matrices on a separable Hilbert space X×X. In this paper, we first establish the spectrum equalities for special cases of upper triangular operator matrices—diagonal ...
Min Su, Deyu Wu
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Invariance of the essential spectrum [PDF]
Bulletin of the American Mathematical Society, 1965 Let A be a densely defined linear operator in a Banach space X. Wolf [4] defines the essential spectrum of A as the complement of §>A, the set of those complex X for which A —X is closed and (a) a(A —X), the multiplicity of X, is finite, (b) R(A —X), the range of A —X, is closed, (c) (3(A — X), the codimension of R{A — X), is finite. This set, which we
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, 1981 Volume 3, Number 2 of Spectrum literary journalhttps://nwcommons.nwciowa.edu/spectrum/1004/thumbnail ...
Spectrum Contributors,
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Symmetry, Integrability and Geometry: Methods and Applications, 2006 In this paper we formulate our results on the essential spectrum of many-particle pseudorelativistic Hamiltonians without magnetic and external potential fields in the spaces of functions, having arbitrary type α of the permutational symmetry.
Grigorii Zhislin
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Essential Oils as Alternative Green Broad-Spectrum Biocides
PlantsNatural compounds from plants represent suitable options to replace synthetic biocides when employed against microorganisms in various applications. Essential oils (EOs) have attracted increased interest due to their biocompatible and rather innocuous ...
Fulga Tanasă +2 more
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One-loop partition function, gauge accessibility and spectra in AdS3 gravity
Journal of High Energy Physics, 2021 We continue the study of the one-loop partition function of AdS3 gravity with focus on the square-integrability condition on the fluctuating fields. In a previous work we found that the Brown-Henneaux boundary conditions follow directly from the L 2 ...
Joel Acosta +3 more
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Essential Skills Companion Kit for Culinary Arts Trades Training [PDF]
, 2016 I. ProfessionalismII. Food Safety & SanitationIII. Tools & EquipmentIV. Eggs & Breakfast CookeryV. Soups, Stocks and SaucesVI. Vegetables & StarchesVII. Cold Kitchen -- Salads & DressingsVIII. Seafood CookeryIX. Meat & Poultry CookeryX.
George, Chef Andrew +6 more
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On the location of the essential spectrum of Schrödinger operators
Proceedings of the American Mathematical Society, 2001 We give estimates on the bottom of the essential spectrum of Schrödinger operators −
METAFUNE, Giorgio Gustavo Ermanno +1 more
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, 1980 Volume 3, Number 1 of Spectrum literary journalhttps://nwcommons.nwciowa.edu/spectrum/1003/thumbnail ...
Spectrum Contributors,
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Horticulturae, 2017 In recent years, consumption of herb products has increased in daily diets, contributing to the prevention of cardiovascular diseases, chronic diseases, and certain types of cancer owing to high concentrations of phytonutrients such as essential oils and
Haijie Dou +3 more
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