有冇人講下topology
咩係topology既世界圓形同正方形一樣,講緊乜
簡單黎講你係唔整爛個圓形泥膠的情況之下, 可以慢慢拉到變左個正方形 (反之亦然)
咁樣既話咩都一樣嫁喎
正式definition係有一個bijection f, 而且f, f^-1 都係continuous
homeomorphic同homotopic唔同㗎喎ching
homotopic 係講兩條curve可以continuously deformed into each other within the space wor
利申: 唔識Algebraic Topology
isotopy
homeomorphic
homotopy比以上更weak
搓泥膠要有embedding咩