The discovery of two smoking pipes from seventeenth-century contexts in Buenos Aires, Argentina, is used to suggest the presence in colonial times of a new set of stylistic norms derived from African traditions that are ...

Each square complex matrix is unitarily similar to an upper triangular matrix with diagonal entries in any prescribed order. Let A = [a(ij)] and B = [b(ij)] be upper triangular n x n matrices that are not similar to direct ...

In the framework of complete probabilistic Menger metric spaces, this paper investigates some relevant properties of convergence of sequences built through sequences of operators which are either uniformly convergent to ...

The discovery of two smoking pipes from seventeenth-century contexts in Buenos Aires, Argentina, is used to suggest the presence in colonial times of a new set of stylistic norms derived from African traditions that are ...

We establish a categorical duality for the finitely generated Lindenbaum-Tarski algebras of prepositional nilpotent minimum logic. The latter's conjunction is semantically interpreted by a left-continuous (but not continuous) ...