The COL institution (constructor-based observational logic) has been introduced as a formal framework to specify both generationand observation-oriented properties of software syst...
The well-known third list homomorphism theorem states that if a function h is both an instance of foldr and foldl, it is a list homomorphism. Plenty of previous works devoted to co...
In the early 1920s, Pavel Urysohn proved his famous lemma (sometimes referred to as "first non-trivial result of point set topology"). Among other applications, this lemm...
Abstract. Origami (paper folding) has a long tradition in Japan's culture and education. We are developing a computational origami system, based on symbolic computation system...
Tetsuo Ida, Dorin Tepeneu, Bruno Buchberger, Judit...