Post's lattice
lattice of all clones (sets of logical connectives closed under composition and containing all projections) on a two-element set {0, 1}, ordered by inclusion
en-US/poʊsts ˈlædəs/
en-GB/pəʊsts ˈlætɪs/
lattice of all clones (sets of logical connectives closed under composition and containing all projections) on a two-element set {0, 1}, ordered by inclusion