Because of their hierarchical nature, P systems are often depicted graphically with drawings that resemble Venn diagrams or David Harel's Higraph (see Statechart).
Venn diagram | John Venn | Henry Venn (Clapham Sect) | Henry Venn | William Venn Gough | Phase diagram | Function block diagram | Euler diagram | Coxeter–Dynkin diagram | Warnier/Orr diagram | Voronoi diagram | Venn Young | Satake diagram | Ribbon diagram of Sucrose Synthase-1 3S27 Structure, isolated from ''Arabidopsis thaliana | Murder of Chrissie Venn | Lexis diagram | ''K''5 is the Hasse diagram | Hertzsprung–Russell diagram | Henry Venn (Church Missionary Society) | Grotrian diagram | Function Block Diagram | Diagram of ''Trigonia costata'' James Parkinson | Control flow diagram | Campbell Diagram | Campbell diagram | Andy Diagram |
His research involves algorithms for exhaustively listing discrete structures, combinatorial Gray codes, Venn and Euler diagrams, combinatorics on words, and enumerative combinatorics.
The album's logo is Vesica piscis, or Venn diagram of two sets, presumably the real world and the hidden world.
John Venn (1834–1923), logician and inventor of the Venn Diagram, was born in Drypool, son of Rev. Henry Venn, Rector of Drypool