Varieties of Boolean inverse semigroups
Keywords: 20M18; 08B10; 08B15; 06F05; 08A30; 08A55; 08B05; 08B20; 20E22; 20M14; Semigroup; Monoid; Inverse; Boolean; Bias; Variety; Group; Wreath product; Additive homomorphism; Conical; Refinement monoid; Index; Type monoid; Generalized rook matrix; Fully group-ma