Recent content by Ashley1209

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    Undergrad Is a Locally One-to-One Proper Map Globally Bijective?

    Yes.Does this have something to do with covering spaces?
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    Undergrad Is a Locally One-to-One Proper Map Globally Bijective?

    Yes, inverse image of compact sets being compact.And the map is between two topological discs.
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    Undergrad Is a Locally One-to-One Proper Map Globally Bijective?

    φ is a continuous, proper and locally one-to-one map.Is it a globally one-to-one map?