user10354138

# 23,165 Reputation

220 today
 +75 5 hours ago 7 events How to rationalize multiple terms with fractional exponents +45 6 hours ago 4 events Question on the given proof of $(\det A)(\det B) \leq [(\operatorname{tr} AB)/n]^n$ +35 13 hours ago 3 events If $a+b+c=\pi$ and $\cot t=\cot a+\cot b+\cot c$, show $\sin^3t=\sin(a-t)\sin(b-t)\sin(c-t)$ +25 11 hours ago 2 events Does multivariate polynomial over a finite field always have a solution (in the field)? +20 10 hours ago 2 events Why bother with the space $\mathcal{L}^1$ for integration when we can abstractly deal with the completion of a semi-normed space +10 4 hours ago upvote $x_1 + x_2 + x_3 + x_4 + x_5=5$ . Determine the maximum value of $x_1x_2+x_2x_3+x_3x_4+x_4x_5$. +10 15 hours ago upvote “Naturally occurring” non-Hausdorff spaces? +15 / -15 15 mins ago 2 events Unimodularity: How are these notions related?
290 yesterday
 +65 09:03 6 events A doubt about $\int_{0}^{1} f(x)~ \left(\int_0^x |f(t)| dt \right)~ dx=7$, if $\int_{0}^{1}f(x) dx=2, \int_{0}^{1} |f(x)| dx=4$ +55 16:52 5 events Groups of order $252 = 4 \cdot 7 \cdot 9$ are solvable +35 16:17 3 events Mixed partials on the diagonal +35 11:07 3 events Elegant way of finding the least perimeter of triangle +35 10:13 3 events 8-fold symmetry wrt one plane implies 8-fold symmetry wrt all planes? +25 11:19 2 events Evaluate $\lim_{h\to 0}\frac{1}{h^2}\begin{vmatrix}\tan x&\tan(x+h)&\tan(x+2h)\\\tan(x+2h)&\tan x&\tan(x+h)\\\tan(x+h)&\tan(x+2h)&\tan x\end{vmatrix}$ +10 16:59 upvote Let $y=f(x)$ satisfy $y''' - ay''+a^2y'-a^3y = 0$ s.t $f(0)=1, f'(0)=0$ and $f''(0)=a^2$. How many positive roots does $f$ have? +10 13:31 upvote If every $x$ with $f(x) = f(\bar x)$ is local minimum, then $\bar x$ is global minimum. +10 09:00 upvote Existence of 8-fold symmetric sets in higher dimensions +10 02:20 upvote Showing a inequality in Poincaré-Bohl (Elon Lages Lima)
320 2 days ago
 +60 23:43 8 events “Naturally occurring” non-Hausdorff spaces? +55 18:43 7 events What is the intuition behind pushouts and pullbacks in category theory? +45 07:38 4 events Isomorphic Sylow p-subgroups of two finite abelian groups G and H +35 14:31 3 events Existence of 8-fold symmetric sets in higher dimensions +25 02:24 2 events Solving Laplace Equation using Separation of Variables inside an annulus +20 06:07 2 events sequence of functions converges pointwise at irrationals +20 02:43 2 events If $L$ is linear function, when does $\lim \limits_{|h| \to 0} (|L(h)|/|h|)$ exist? +15 22:17 2 events What is an example of a function $f: \mathbb{R} \rightarrow \mathbb{R}$ that is only continuous on the irrational numbers and zero? +15 17:37 accept A question based on location of roots using information about derivative at some points +15 16:13 accept Proving that midpoints of 4 sides and the incenter in a tetrahedron are coplanar, given some area conditions +15 15:30 2 events A question about convergence of series 20:26 3 events Back-and-forth harmonic progression — do we get all of $\mathbb{Q}?$
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