Let $X$ be a space and $CX$ be the cone of $X.$ Then does $(CX, X)$ have homotopy extension property? If so, how do I show that?
Any help in this regard will be greatly appreciated. Thanks in advance.
Let $X$ be a space and $CX$ be the cone of $X.$ Then does $(CX, X)$ have homotopy extension property? If so, how do I show that?
Any help in this regard will be greatly appreciated. Thanks in advance.
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