Ewan Delanoy
Reputation
30,777
99/100 score
 Jan 27 revised Algebraic integers divided by a prime added 1 character in body Dec 21 revised Canonical colorings over $\omega$ added 134 characters in body Dec 10 revised Projector making sum of double products equal to zero deleted 8 characters in body Dec 6 revised $\cos k\theta$ and $\cos(k+1)\theta$ are both rational only when $\theta=\pi/6$ edited body Dec 6 revised $\cos k\theta$ and $\cos(k+1)\theta$ are both rational only when $\theta=\pi/6$ added 25 characters in body Dec 4 revised How prove that polynomial has only real root. added 4 characters in body Nov 16 revised Is a linear factor more likely than a quadratic factor? added 19 characters in body Nov 16 revised Is a linear factor more likely than a quadratic factor? added 6 characters in body Nov 6 revised Formula for sum of three roots in base field added 8 characters in body Nov 3 revised Show that if $f:\mathbb{R}\rightarrow\mathbb{R}$ is uniformly continuous, then sequence $f(x+1),f(x+\frac{1}{2}),f(x+\frac{1}{3}),\ldots$ added 2 characters in body Oct 8 revised Any nonzero polynomial can be suitably modified to become everywhere nonzero on ${\mathbb Z}^n$? deleted 98 characters in body Oct 8 revised Commutant of generic matrix with polynomial coefficients deleted 496 characters in body Oct 2 revised Prove that $(x_1y_1 + x_2y_2 - 1)^2 \ge (x_1^2 + x_2^2 - 1)(y_1^2 + y_2^2 - 1)$ added 32 characters in body Sep 23 revised Let $a_1,a_2,a_3,…a_n\geq0$ and $a_1+a_2+a_3+…+a_n=2m$,then prove that the greatest possible value of $\sum_{i=1}^{n}a_i.a_{i+1}$. added 13 characters in body Sep 23 revised Minimum value - with cube root of unity added 15 characters in body Sep 20 revised How many (positive real) zeroes can $f(x)=x^a-b(c^x)$ have? added 11 characters in body Sep 19 revised Consistency hierarchy between models with many urelements added 7 characters in body Sep 12 revised Turning ZFC into a free typed algebra added 57 characters in body Sep 11 revised Prove $\{u_n\}$ converges to $\sqrt[3]{u_2^2 u_1}$ without using subsequences. added 343 characters in body Sep 8 revised Can anyone give me $k$ projection maps $P_i:V \to V$ ;$i=1,…,k$ such that $\sum_{i=1}^k Im(P_i)$ is not a direct sum but $\sum_{i=1}^k P_i=Id$. added 135 characters in body