Giuseppe Peano (1858–1932), Italian mathematician.

(logic) A set of axioms of first-order logic for the natural numbers specifying the operations of zero, successor, addition and multiplication, including a first-order schema of induction.

(mathematical analysis) A space-filling curve in the 2-dimensional plane.

plural of Peano curve

plural of Peano axiom

(mathematics) Any of a set of fundamental axioms describing the natural numbers and their relationships.

(mathematics) the scaling limit of random planar maps equipped with a collection of loops coming from a critical FK model.

plural of peanosphere