Locally compact semi-algebras generated by a commuting operator family.

Nandakumar, N.R.; Van der Mee, Cornelis V.M.

Displaying similar documents to “Locally compact semi-algebras generated by a commuting operator family.”

Semi-Browder operators and perturbations

Vladimir Rakočević (1997)

Studia Mathematica

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An operator in a Banach space is called upper (resp. lower) semi-Browder if it is upper (lower) semi-Fredholm and has a finite ascent (resp. descent). An operator in a Banach space is called semi-Browder if it is upper semi-Browder or lower semi-Browder. We prove the stability of the semi-Browder operators under commuting Riesz operator perturbations. As a corollary we get some results of Grabiner [6], Kaashoek and Lay [8], Lay [11], Rakočević [15] and Schechter [16].

Editorial Notes

(1990)

Studia Mathematica

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Lasry-Lions regularization and a lemma of Ilmanen

Patrick Bernard (2010)

Rendiconti del Seminario Matematico della Università di Padova

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Semi-t-operators on a finite totally ordered set

Yong Su, Hua-Wen Liu (2015)

Kybernetika

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Recently, Drygaś generalized nullnorms and t-operators and introduced semi-t-operators by eliminating commutativity from the axiom of t-operators. This paper is devoted to the study of the discrete counterpart of semi-t-operators on a finite totally ordered set. A characterization of semi-t-operators on a finite totally ordered set is given. Moreover, The relations among nullnorms, t-operators, semi-t-operators and pseudo-t-operators (i. e., commutative semi-t-operators) on a finite...

On ${(R_{0})}_{s}$ -spaces

Maheshwari, S.N., Prasad, R. (1975)

Portugaliae mathematica

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A note on hyperconnected sets

T. Noiri (1979)

Matematički Vesnik

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Corrections to “Some generalizations of $T_{D}$ -spaces” and “A generalization of normal spaces”.

Nayar, Bhamini M.P. (1997)

Matematichki Vesnik

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Semi-open sets in biclosure spaces

Jeeranunt Khampakdee, Chawalit Boonpok (2009)

Discussiones Mathematicae - General Algebra and Applications

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The aim of this paper is to introduce and study semi-open sets in biclosure spaces. We define semi-continuous maps and semi-irresolute maps and investigate their behavior. Moreover, we introduce pre-semi-open maps in biclosure spaces and study some of their properties.

Semi-preopen sets

D. Andrijević (1986)

Matematički Vesnik

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