`  == Mathematical proof ==  I agree with gandalf61 that the text you are adding to the mathematical proof article has serious issues; please see Talk:Mathematical_proof#Removed_nonsense. Also, please note that repeatedly adding material despite objections is likely to get this address blocked from editing, but not result in any permanent change to the article. Please discuss the change on the article's talk page, and only add it again if you can find some agreement on what it should say. I'm not sure that the term ``proof by intuitive lemma`` is common in any way. — Carl ( ·  `