Publication . Karlovych, Oleksiy; Valente, Márcio; CMA - Centro de Matemática e Aplicações; DM - Departamento de Matemática; Faculdade de Ciências e Tecnologia (FCT)
Yuri Karlovich observed in the early 1990s that every Fredholm operator in the Banach algebra generated by the Cauchy singular integral operator S and the operators of multiplication by matrix-valued uniform almost periodic functions on the space LNp(ℝ) with 1