Sanchez

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I really appreciate it when you take time to answer my questions. Thanks!


102 Answers

newest activity votes
3
Planes, quadric surfaces and then …?
4
Intersection of open affines can be covered by open sets distinguished in *both*affines
1
Finding integers to satisfy two inequalities.
2
Prove that $\frac{m+n+2}{2(m+1)}{n\choose m}2^{(n-m)/2}$ is an integer
4
Prove That $x=y=z$
3
Given one inequality, prove second inequality
0
About equivalent characterization of ergodicity
2
If $\omega$ is a 2-form on $\mathbb{R}^4$ and $\omega \wedge \omega = 0$, then $\omega$ is decomposable.
3
The image of the diagonal map in scheme
2
Dimensions: $\bigcap^{k}_{i=1}V_i \neq \{0\}$
3
Definition of nebentypus in $L$-functions.
3
How prove this $(abc)^4+abc(a^3c^2+b^3a^2+c^3b^2)\le 4$
2
Iwaniec Kowalski Notation
1
Definition of Unipotent in Positive Characteristic
2
Intuitively, what is the height of a point on an abelian variety?
1
Sum of divisors is prime implies number of divisors is prime.
3
Formal finite sum for integration on k-chains
2
Prove this inequality(4)
8
Given $a+b+c=0$, simplify the following.
1
Primes and the Ramanujan sum.
1
Prove $\sqrt{a} + \sqrt{b} + \sqrt{c} \ge ab + bc + ca$
2
Equal-variables problem in three variables
3
For $x, y > 0$, can you show that $\frac{x(2x-y)}{y(2z + x)} + \frac{y(2y-z)}{z(2x+y)}+\frac{z(2z-x)}{x(2y+z)}\geqslant 1$
0
Basic Questions about the Properties of Mertens Function
2
Clarification on the Weierstrass factorization theorem
3
Hartshorne book Proposition (II.5.13)
6
Prove that $ \left(1+\frac a b \right) \left(1+\frac b c \right)\left(1+\frac c a \right) \geq 2\left(1+ \frac{a+b+c}{\sqrt[3]{abc}}\right)$.
2
some question of closed subscheme
10
Prove that for any $x \in \mathbb N$ such that $x<n!$ is the sum of at most $n$ distinct divisors of $n!$
1
When are powers of primitive elements still primitive elements
1 2 3 4