This monthly journal, begun in 1950, is devoted entirely to research in pure and applied mathematics, principally to the publication of original papers of moderate length. A section called Shorter ...
Denote by 𝒲₁ the set of complex valued functions of the form a(z)=∑i=−∞+∞aizi such that ∑i=−∞+∞|iai|<∞. We call 𝖰𝖳-matrix a quasi-Toeplitz matrix 𝐴, associated with a symbol 𝑎(𝑧) ∈ 𝒲₁, of the ...