Example 14.26.3. Suppose in the situation above $a = b$. Then there is a trivial homotopy from $a$ to $b$, namely the one with $h_{n, i} = a_ n = b_ n$.
Example 14.26.3. Suppose in the situation above $a = b$. Then there is a trivial homotopy from $a$ to $b$, namely the one with $h_{n, i} = a_ n = b_ n$.
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