Is the Abstract Mathematics of Topology Applicable to the Real World?

1st speaker :
◇ History: Riemann discovered Topology on his papers left behind after death. He told friend Betti.
◇ Betti Number: number of
– ‘scissors’ cut to make a tree (in 2 dim),
– ‘drill’ cut to make a disc (in 3 dim).

2nd speaker:
◇ Evolution (bacteria, viruses) using Topology ‘Barcoding’ technique.

比喻:
病菌(viruses / bacteria)是白骨精多变 (mutate), Topology (拓扑)是孙悟空的火眼金睛, 妖怪不能遁形, 骗得了常人, 骗不过老孙, “三打白骨精”。

3rd speaker:
◇ Liquid Crystal: Homology

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