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Aug
19
comment Is there a text that provides the proof of Fermat's Last Theorem?
Wiles' proof was actually in June 1993; an erratum was seen in the September of that year. Wiles went away and published his full account of the Taniyama-Shimura Conjecture (or the Modularity Theorem) in September 1994.
Aug
19
reviewed Approve N-filling implies 3N/2 - geodesic filling
Aug
19
revised Prove $(1+ \tan{A}\tan{2A})\sin{2A} = \tan{2A}$.
re-worked the title back to edit 2
Aug
19
comment Prove $(1+ \tan{A}\tan{2A})\sin{2A} = \tan{2A}$.
@user36790 I agree with you, from what I saw I couldn't see how it was a hint but that could be my failure. Anyway you've netted to zero with me! All the best.
Aug
19
comment Calculating better value products.
Consider price per gram. For promotion tins this is $80/300=0.27$c per g. For the large tin this is $112/500=0.22$c per gram. Since $0.22 \leq 0.27$ the large tin is better value.
Aug
19
comment Prove $(1+ \tan{A}\tan{2A})\sin{2A} = \tan{2A}$.
@user36790 I downvoted due to a terrible first attempt at an answer. Since your edit you've made it the best on offer IMO and I have upvtoted you again. Shame I can't give a +2! Cheers.
Aug
19
revised Prove $(1+ \tan{A}\tan{2A})\sin{2A} = \tan{2A}$.
Tex included
Aug
19
reviewed Reject Topology question with closed sets.
Aug
19
reviewed Approve Finding a perpendicular vector
Aug
19
revised Evaluation of $\int_{0}^1 \frac{1}{x} \log^3{(1-x)}dx =-\frac{\pi^4}{15}$ and $\int_{-\pi}^{\pi} \log(2\cos{\frac{x}{2}}) dx =0$
Tex included
Aug
19
revised High School Geometry Text?
edited tags
Aug
19
comment How I can simplify this double sum?
Please advise if the edit is not correct. Thanks.
Aug
19
revised How I can simplify this double sum?
Tex included
Aug
19
comment Good book about differential forms
R.W.R Darling's book Differential Forms and Connections was a great intro for me when I began graduate studies. Find it here amazon.co.uk/Differential-Forms-Connections-R-Darling/dp/…
Aug
19
reviewed Reject Under what hypothesis on the domain is the X-ray transform/John transform operator bounded?
Aug
18
reviewed Approve Why is the set composed of all intervals $(-r,r)$ for any rational number $r$, the empty set, and all real numbers not a topology?
Aug
18
reviewed Approve A question about current and Dirac measure
Aug
18
comment Alternative Proof of why Every Manifold is Locally Compact
Hmmn. From Heine–Borel, a closed unit ball of any finite-dimensional normed vector space is definitely compact. I don't think that this is true for infinite dimensions. It then follows by logical implication that a normed vector space is finite-dimensional if and only if its closed unit ball is compact.
Aug
17
reviewed Reject Analytic solution to wave equation on a hollow cylinder
Aug
17
reviewed Approve How to make this cubic root (C++) algorithm faster?