0844名無しのひみつ
2022/05/14(土) 14:08:34.55ID:Ic4UNeva>>839
繰り返すなよ、キチガイ。
読め↓、低能。
「A metric space is a pair (X, d) where X is a set and d is a metric on X. Almost always, when d is understood, we engage in the abuse of language and speak of "the metric space X".」