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[REOPENED]

This question was heavily downvoted and closed: When a compact topological manifold with boundary is a ball? Color me ignorant, perhaps, but I wondered if it were as trivial as the downvotes and closure might suggest.

Although it is a question for the topological category, a very similar question but for the smooth category was upvoted and answered last year, and the answers suggested there was interesting mathematics: The boundary of a domain whose interior is diffeomorphic to the ball.

Update: OP added some context.

[REOPENED]

This question was heavily downvoted and closed: When a compact topological manifold with boundary is a ball? Color me ignorant, perhaps, but I wondered if it were as trivial as the downvotes and closure might suggest.

Although it is a question for the topological category, a very similar question but for the smooth category was upvoted and answered last year, and the answers suggested there was interesting mathematics: The boundary of a domain whose interior is diffeomorphic to the ball.

Update: OP added some context.

This question was heavily downvoted and closed: When a compact topological manifold with boundary is a ball? Color me ignorant, perhaps, but I wondered if it were as trivial as the downvotes and closure might suggest.

Although it is a question for the topological category, a very similar question but for the smooth category was upvoted and answered last year, and the answers suggested there was interesting mathematics: The boundary of a domain whose interior is diffeomorphic to the ball.

Update: OP added some context.

[REOPENED]

This question was heavily downvoted and closed: When a compact topological manifold with boundary is a ball? Color me ignorant, perhaps, but I wondered if it were as trivial as the downvotes and closure might suggest.

Although it is a question for the topological category, a very similar question but for the smooth category was upvoted and answered last year, and the answers suggested there was interesting mathematics: The boundary of a domain whose interior is diffeomorphic to the ball.

Update: OP added some context.

This question was heavily downvoted and closed: When a compact topological manifold with boundary is a ball? Color me ignorant, perhaps, but I wondered if it were as trivial as the downvotes and closure might suggest.

Although it is a question for the topological category, a very similar question but for the smooth category was upvoted and answered last year, and the answers suggested there was interesting mathematics: The boundary of a domain whose interior is diffeomorphic to the ball.

This question was heavily downvoted and closed: When a compact topological manifold with boundary is a ball? Color me ignorant, perhaps, but I wondered if it were as trivial as the downvotes and closure might suggest.

Although it is a question for the topological category, a very similar question but for the smooth category was upvoted and answered last year, and the answers suggested there was interesting mathematics: The boundary of a domain whose interior is diffeomorphic to the ball.

Update: OP added some context.