In many papers in mathematics, the author states a theorem in somewhere and adds some explanations and perhaps some lemmas and later starts the proof with a phrase like "Proof of Theorem x.xx" (x's stand for some numbers). The only format I am aware for starting and ending a proof is as follows:
This format is good when I start the proof immediately after stating theorems (propositions etc). So my question is:
How can I start the proof later with a phrase like "Proof of Theorem x.xx"?
P.S. I am not sure about the tags I have used. Please, modify them if you know better tags.