Spider diagrams are a visual logic capable of makeing statements about relationships between sets and their cardinalities. Various meta-level results for spider diagrams have been...
Abstract. The spider diagram logic forms a fragment of constraint diagram logic and is designed to be primarily used as a diagrammatic software specification tool. Our interest is ...
Geared to complement UML and to the specification of large software systems by non-mathematicians, spider diagrams are a visual language that generalizes the popular and intuitive...
Spider diagrams are a visual notation for expressing logical statements. In this paper we identify a well known fragment of first order predicate logic, that we call ESD, equivalen...
Gem Stapleton, John Howse, John Taylor, Simon J. T...
Let Q(k, l) be a poset whose Hasse diagram is a regular spider with k+1 legs having the same length l (cf. Fig. 1). We show that for any n 1 the nth cartesian power of