Combinatoria e Topologia. Teorema di Quillen e funzioni di Möbius
Andrea Brini (2004)
Bollettino dell'Unione Matematica Italiana
Similarity:
The notion of Galois Connections between partially ordered sets is introduced, together with a presentation of some of its main characterizations. This leads to a true understanding of the deep connection that links Galois Connections to Quillen’s Homotopy Type Equivalence Theorem. Furthermore, the notion of Möbius functions of finite lattices is discussed, in order to show its crucial role in Enumerative Combinatorics over Finite Posets and Discrete Probability Theory. Since the values...