Let X and X' denote a single set in the two topologies T and T', respectively. Let i : X' → X be the identity function. (a) Show that i is continuous A T' is finer than T. (b) Show that i is a homeomorphism + T' = T.

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Let X and X' denote a single set in the two topologies T and T', respectively.
Let i : X' → X be the identity function.
(a) Show that i is continuous A T' is finer than T.
(b) Show that i is a homeomorphism + T' = T.
Transcribed Image Text:Let X and X' denote a single set in the two topologies T and T', respectively. Let i : X' → X be the identity function. (a) Show that i is continuous A T' is finer than T. (b) Show that i is a homeomorphism + T' = T.
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