I'm trying to figure out if the solid torus ($D^2 \times S^1$) is contractible, homotopic equivalent to $S^1$, or neither?
I know that $S^1$ is not contractible, but since its part of a product space, does that matter?
I'm trying to figure out if the solid torus ($D^2 \times S^1$) is contractible, homotopic equivalent to $S^1$, or neither?
I know that $S^1$ is not contractible, but since its part of a product space, does that matter?
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