位相数学

(1)the branch of pure mathematics that deals only with the properties of a figure X that hold for every figure into which X can be transformed with a one-to-one correspondence that is continuous in both directions

(2)Xが両方の方向で連続的である1対1の通信で変わることができるあらゆる数字のために保つ数字Xの特性だけに対処する純粋数学の分科