Mathematics
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orangeskid
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All Questions Answers
Score Newest
answer
174
Is there a size of rectangle that retains its ratio when it's folded in half?
Feb 11, 2015
answer
25
Assume that we have six positive real numbers whose sum is 150. Prove that there exist two of them whose difference is less than 10.
Apr 25, 2018
answer
21
How to compute $\int_{-\infty}^\infty\exp\left(-\frac{(x^2-13x-1)^2}{611x^2}\right)\ dx$
Sep 29, 2014
question
17
Maclaurin series of $1- \cos^{2/3} x$ has all coefficients positive
May 5
answer
16
Eigenvalues for $4\times 4$ matrix
Apr 27, 2018
answer
14
Convex polygons that do not tile the plane individually, but together they do
Apr 6, 2020
answer
14
Every non-unit is in some maximal ideal
Sep 20, 2014
answer
13
A continuous function defined on an interval can have a mean value. What about a median?
Oct 6, 2014
answer
12
If a matrix is triangular, is there a quicker way to tell if it is can be diagonalized?
Dec 3, 2015
answer
12
How can we prove $\mathbb{Q}(\sqrt 2, \sqrt 3, ..... , \sqrt n ) = \mathbb{Q}(\sqrt 2 + \sqrt 3 + .... + \sqrt n )$
Dec 14, 2015
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11
Convexity of a certain sublevel set
11
Commuting hermitian matrices
10
How to prove the determinant of a Hilbert-like matrix with parameter is non-zero
9
Inverse Galois problem for $2$-groups with an involution as complex conjugation
5
Changing values of digits of an algebraic irrational number

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