User Diego Silvera - Mathematics Stack Exchange

Diego Silvera

Member for 11 years, 7 months
Last seen more than a week ago

Montevideo, Uruguay

16 Answers

Score Activity Newest

0 votes

smoothness of multivariable functions

answered Feb 6, 2013 at 1:16

24 votes

Are There Any Symbols for Contradictions?

answered Feb 17, 2013 at 0:54

1 vote

What was the first bit of mathematics that made you realize that math is beautiful? (For children's book)

answered Apr 28, 2013 at 0:40

0 votes

Every curve in $\mathbb{A}^3$ is the zero-locus of $3$ polynomials

answered Feb 24, 2013 at 20:14

7 votes

How to prove that if convex $A \subset \mathbb{R}^n$ and $A+A=A$ then $0 \in cl(A)$?

answered Feb 16, 2013 at 11:24

4 votes

If $\sum_{n}A_n$ is convergent, then $\sum_{n} (-1)^{n} A_n$ is also convergent?

answered Feb 16, 2013 at 10:25

6 votes

Accepted

Finding limit of a function ($0$ appears in denominator)

answered Feb 10, 2013 at 0:13

0 votes

Rank of a Subgroup of a Free Abelian Group.

answered Jan 22, 2013 at 11:21

2 votes

Showing that $X_n = 1 + \frac{1}{2} + \frac{1}{3} + \cdots + \frac{1}{n}$ is not bounded above.

answered Jan 13, 2013 at 21:02

-7 votes

Accepted

If a continuous real function is additive, then it is linear

answered Jan 13, 2013 at 20:27

53 votes

Funny identities

answered Jan 12, 2013 at 23:58

1 vote

What is the difference between a Subgroup and a subset?

answered Jan 12, 2013 at 23:28

5 votes

Let $F$ be a field, $f(x)$ is a polynomial in $F[x]$. $E = F[x]/(f)$ is a field if and only if $f(x)$ is irreducible.

answered Jan 8, 2013 at 12:41

0 votes

Accepted

A set of Linear transformations

answered Jan 8, 2013 at 11:23

3 votes

Proof of the inequality $e^x-x>0$ for all $x\in \Bbb R.$

answered Jan 8, 2013 at 11:11

0 votes

surjectivity and inverse of a function

answered Dec 16, 2012 at 15:39