nonsquare Banarch space

nonsquare Banarch space

[‚nän‚skwer ′bä‚näk ‚spās] (mathematics) A Banach space in which there are no nonzero elements, x and y, that satisfy the equation 11 x + y 11 = 11 x-y 11 = 211 x 11 = 211 y 11.