[ SmokeDetector | MS ] Link at beginning of answer (33): Why do differentiation rules work? What's the intuition behind them? (Not asking for proofs) by Sam on math.SE

@SmokeDetector The answer Smokey highlights is probably worth deleting. This answer to the same question suffers from a similar problem.

reopen Context and details added.

[ SmokeDetector | MS ] No whitespace in body (98): How to prove right Rn> Mn> Ln when F(X) is increasing? ✏️ by AlphaDJog on math.SE

D1, D2, D3

D4, D5

D1, D2, D3.

D4, D5, D6.

D7, D8, D9.

D10, D11, D12.

C1, C2, C3.

C4, C5, C6.

Wrong answer. This user keeps repeating the error that mathematical definitions are not formal. It also states wrongly that "a recursive definition defines one structure in terms that mention that same structure", which is either false or extremely misleading.

@user21820 I cannot judge if that is correct or not (mathematical logic is not my area of expertise). But I wonder why you report that only here, and did not leave a comment at the question, so that the author has a chance to clarify or improve the answer.

@MartinR Because that user refuses to learn, so I would be wasting my breath.

@user21820: I cast a vote on your posts. @JoséCarlosSantos @JyrkiLahtonen @rschwieb @MartinR: We seem to be a bit shorthanded here. See DA-DL, D1-D5, D1-D12

@RRL I did what I could do until I ran out of deletion votes.

@JoséCarlosSantos: Thank you.

cv-pls inequality PSQ Still an inequality question‭ - Sanjay Verma‭ 2020-09-18 10:36:39Z

cv-pls real-analysis Unclear Is the Ternary Cantor set a metric space‭ - Darrel McGuiness‭ 2020-09-18 18:22:33Z

[ SmokeDetector | MS ] Few unique characters in answer, repeating characters in answer (168): Big O notation checking if C,K can be used as witnesses by ryelee on math.SE