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math.FA2026
T Extended Weakly Contractive, Kannan, and Geraghty Mappings Fixed Points, Equivalences,
Fatemeh Fogh, Sara Behnamian
We develop a unified T-extended framework for weakly contractive, weakly Kannan, and Geraghty classes of self-maps S on a metric space (X, d), where distances are measured on the a…
math.FA2025
Isomorphisms, Moduli, and Cohomological Dimension for Twisted Triangular Banach Algebras
Sara Behnamian, Fatemeh Fogh
We introduce and study twisted triangular Banach algebras T_sigma(A,B;X), built from Banach algebras A,B, a Banach A-B bimodule X, and a pair of automorphisms sigma=(sigma_A,sigma_…