Trying to find a previously posted list of proofing theorems and postulates

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A member is seeking a previously posted list of proofing theorems and postulates, specifically one that included around ten items, such as the triangle inequality theorem. This list was frequently referenced by other members and was helpful for tackling proofs. The user has spent considerable time searching for the original post from 3 or 4 years ago. Another member provided a link to a related thread, though it may not be the exact list sought. The discussion highlights the importance of shared resources in mathematical proofing.
jcw99
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I've spent a good part of the day looking for a post by one of the members which appeared 3 or 4 years ago and which was linked to every so often by other members. The list had about 10 items in it, one of which was the triangle inequality theorem. IIRC the poster said that he/ she referred to this list whenever having a hard time with a proof. If someone will post a link, I promise to print out the post! Thanx!
 
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Thank you very much chiro.
 
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