Results 141 to 150 of about 877 (187)

On new common fixed point theorems via bipolar fuzzy b-metric space with their applications. [PDF]

open access: yesPLoS One
Maheswari JU   +5 more
europepmc   +1 more source

On odd duals of a Banach algebra as a Banach algebra

2022
Summary: It is known that even duals of a Banach algebra \(A\) with one of Arens products are Banach algebras, these products are natural multiplications extending the one on \(A\). But the essence of \(A^\ast\) is completely different. By defining new products, we investigate some algebraic and spectral properties of odd duals of~$A$.
openaire   +2 more sources

Martingales in Banach *-algebras.

Journal für die reine und angewandte Mathematik (Crelles Journal), 1975
Mathematics Technical ...
Alò, Richard A.   +2 more
openaire   +1 more source

Real Banach ✶ Algebras

Acta Mathematica Sinica, 2000
The systematic study of real Banach *-algebras are given in this paper. It is shown that \textit{J. W. M. Ford}'s lemma [see J. Lond. Math. Soc. 42, 521-522 (1967; Zbl 0145.38702)] and \textit{V. Pták}'s inequality [see Bull. Lond. Math. Soc. 2, 327-334 (1970; Zbl 0209.44403)] hold in the real case and the (real) linear span of unitary elements ...
Li, Bingren, Tam, Pingkwan
openaire   +2 more sources

The Spectrum in a Banach Algebra

The American Mathematical Monthly, 2006
(2006). The Spectrum in a Banach Algebra. The American Mathematical Monthly: Vol. 113, No. 8, pp. 756-758.
openaire   +2 more sources

Complemented Banach Algebras

Canadian Journal of Mathematics, 1964
Let A be a complex Banach algebra and Lr (Ll) be the lattice of all closed right (left) ideals in A. Following Tomiuk (5), we say that A is a right complemented algebra if there exists a mapping I —> IP of Lτ into Lr such that if I ∊ Lr, then I ∩ Ip = (0), (Ip)p = I, I ⴲ Ip = A and if I1, I2 ∊ Lr with I1 ⊆ I2 then .If in a Banach algebra A every ...
openaire   +1 more source

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