In this note we show that 1-skeletons and 2-skeletons of n-pseudomanifolds with full boundary are (n+ 1)-connected graphs and n-connected 2-complexes, respectively. This generalizes previous results due to Barnette and Woon.

In this paper we study when Freudenthal extensions of proper maps preserve the (weak, semi) confluency. Also the extensions to the Alexandroff one-point compactificaton are considered.

We present examples of localization functors whose composition with certain cellularization functors is not idempotent, and vice versa.

Several recent results by Thomassen ([23 The locally connected compatc metric spaces embeddable in the plane, Combinatorica ...

In this paper, the notion of ξ-conformally flat on a contact metric structure is introduced and it is proved that any ...

Associated with a k-tuple (n1, . . . , nk) ∈ S(2n + 1) with n ≥ 1, we define a contact δ-invariant, δc (n1, . . . , nk), ...

It is quite a lot scarce the literature on the Norwegian mathematician Sophus Lie, in spite of being him, as the great ...

En este artículo se sugiere la posibilidad de introducir algunos temas de las Matemáticas de Secundaria o Bachillerato, ...

We prove that, for n ≥ 3, the minimal dimension of a model of the classifying space of the braid group Bn, and of the pure braid group Pn, with respect to the family of virtually cyclic groups is n.

Continuando la línea de investigación iniciada por uno de los autores relativa a mostrar las biografías de mujeres españolas ...