noun-modifying (irregular)
countable; enumerable; denumerable
Mathematics term for a set that can be put into one-to-one correspondence with the natural numbers. Used prenominally, as in 可付番集合 (countable set).
See also: 可算
A countable set is a set that can be put into one-to-one correspondence with the natural numbers.
denumerable set; countable set
Compound of 可 (possible) + 付番 (numbering, assigning numbers). The exact historical derivation is uncertain; it is a technical term in mathematics.