n. Math. a closed surface with only one side, formed by passing the neck of a tube through the side of the tube to join the hole in the base.
[ F. Klein, Ger. mathematician d. 1925 ]
n. Math. a closed surface with only one side, formed by passing the neck of a tube through the side of the tube to join the hole in the base.
[ F. Klein, Ger. mathematician d. 1925 ]
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012