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Jan
30
answered Factorize $2a^3 - b^3 - c^3$
Jan
27
answered $\mathbb{Q}(\sqrt[3]{17})$ has class number $1$
Jan
27
asked Algebraic integers divided by a prime
Jan
15
answered Prove that $X,Y,Z$ lie on a single line.
Jan
4
asked Polynomial whose roots are not integers but almost so
Dec
21
answered Proving $(ax+by-1)^2 \ge (x^2+y^2-1)(a^2+b^2-1)$
Dec
21
answered A sequence of quadratic polynomials
Dec
18
answered Show that $\lim\limits_{r\to\infty} \textrm{\{} \|x-ru\|-\|y-ru\| \textrm{}\} = \left<y-x,u\right>$
Dec
10
asked Projector making sum of double products equal to zero
Dec
9
asked Deleting one digit yields a divisor
Dec
9
asked Generic factorization of a one-parameter family of degree four polynomials
Dec
6
answered $\cos k\theta$ and $\cos(k+1)\theta$ are both rational only when $\theta=\pi/6$
Dec
1
answered Prove $|W\cap P|\le 2^m$
Nov
22
answered Prove $S_{n} \cap [1,k] = S \cap [1,k]$ eventually
Nov
16
asked Is a linear factor more likely than a quadratic factor?
Nov
16
answered Find all polynomials $P(x,y)$ which satisfy $P(x,y) = P(x+1,y+1)$
Nov
7
answered How to solve $\lim_{n\to\infty} \sqrt[3]{(n+1)(n+2)(n+3)}-n$?
Nov
6
asked Formula for sum of three roots in base field
Nov
3
answered Show that if $f:\mathbb{R}\rightarrow\mathbb{R}$ is uniformly continuous, then sequence $f(x+1),f(x+\frac{1}{2}),f(x+\frac{1}{3}),\ldots$
Oct
31
asked If $P$ is monic with degree $d$, at least one of $P-1,P-2,\ldots ,P-(d+1)$ is irreducible over $\mathbb Q$