Algebraic Topology
《Algebraic Topology》 · 第 137 页 · Section 6.6
A continuous map \(b:D^n\to D^n\) has a fixed point.
Algebraic Topology
《Algebraic Topology》 · 第 137 页 · Section 6.6
A continuous map \(b:D^n\to D^n\) has a fixed point.
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