Francesco
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# 54 Actions

 Oct 17 revised Function that sends $1,2,3,4$ to $0,1,1,0$ respectively "it will not pass for me" and "getting tired" suggest this being homework. Oct 17 suggested approved edit on Function that sends $1,2,3,4$ to $0,1,1,0$ respectively Oct 9 revised Does interior of closure of open set equal the set? it's -> its Oct 9 suggested approved edit on Does interior of closure of open set equal the set? Jul 8 answered Big List of Fun Math Books Jun 8 awarded Constituent Jun 8 awarded Caucus Jun 8 revised Cute Determinant Question minor typo Jun 8 suggested approved edit on Cute Determinant Question Jun 8 comment Is it generally accepted that if you throw a dart at a number line you will NEVER hit a rational number? @Lubin as a physicist I would say that the problem is more with confusing "low probability" with "impossible", rather than "measure zero" with "impossible". But keep in mind that physicist usually handle low probabilities well enough (think of computation involving quantum mechanical crossing of barriers). And physicist often also handle the subtleties of hypothesis testing reasonably well. Now, surely "often" doesn't mean that the set of cases where some error may happen has measure zero :-) Jun 2 awarded Citizen Patrol Apr 8 awarded Yearling Apr 7 answered How do you explain the concept of logarithm to a five year old? Mar 8 revised Why is “the set of all sets” a paradox? Removed smiley Mar 8 suggested approved edit on Why is “the set of all sets” a paradox? Feb 26 comment Show that $\tan 3x =\frac{ \sin x + \sin 3x+ \sin 5x }{\cos x + \cos 3x + \cos 5x}$ A. Raina: it isn't nice to make one feel old :-) I don't want even to think about how many years have lapsed since I studied prostaphaeresis: en.wikipedia.org/wiki/Prosthaphaeresis Feb 21 comment Examples of apparent patterns that eventually fail This was exactly the example that I was going to give, +1 from me Feb 6 comment Prove that $n! > \sqrt{n^n}, n \geq 3$ I don't find the "growth factor" approach ugly, since it provides a technique adaptable to other cases. +1 from me. Feb 6 revised Prove that $n! > \sqrt{n^n}, n \geq 3$ corrected typo (lage -> large) and fixed math formatting frac -> \frac Feb 6 suggested approved edit on Prove that $n! > \sqrt{n^n}, n \geq 3$