The Classical Seifert–van Kampen Theorem by Arthur Freitas Ramos, David Barros Hulak and Ruy Jose Guerra Barretto de Queiroz May 09
Ultrametric Structure for Restriction Spaces by Benoît Ballenghien, Benjamin Puyobro and Burkhart Wolff May 07
Restriction Spaces: a Fixed-Point Theory by Benoît Ballenghien, Benjamin Puyobro and Burkhart Wolff May 07
Definition and Elementary Properties of Ultrametric Spaces by Benoît Ballenghien, Benjamin Puyobro and Burkhart Wolff Apr 10
Simplicial Complexes and Boolean functions by Jesús Aransay, Alejandro del Campo and Julius Michaelis Nov 29