noun (used with a plural verb) Mathematics.
a collection of axioms concerning the properties of the set of all positive integers, including the principle of mathematical induction.
What’s The #’s Real Name?A hash has referred to stripes on military jackets since as early as 1910. But, in the 1980s, people started using hash to refer to the # symbol.
See also principle of mathematical induction.
Origin of Peano's postulates
named after G. Peano
Also called Peano's axioms.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019