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836
bio website
location Santiago, Chile
age 24
visits member for 2 years, 3 months
seen 1 hour ago

I'm an undegraduate math student in Pontificia Universidad Católica de Chile.


2h
revised Prove that $\sum \limits_{d|n}(n/d)\sigma(d) = \sum \limits_{d|n}d\tau(d)$
added 10 characters in body
2d
reviewed Approve suggested edit on Epsilon Delta definition to prove $\lim_{x\to a} x^{1/3} = a^{1/3}$
2d
comment $A\rtimes B$ vs $B\rtimes A$?
Do you know what is the semidirect product? It seems from what you say that you only know the symbol.
Aug
22
reviewed Approve suggested edit on How to find $\lim_{x\to 0}\frac{\tan 3x}{\tan 5x}$?
Aug
22
reviewed Approve suggested edit on Notation problem in integration: write $dx$ or ${\mathrm{d}}x$?
Aug
17
reviewed Approve suggested edit on Form a quadratic equation whose roots are $\sqrt{3}+2$ and $\sqrt{2}+3$
Aug
16
reviewed Approve suggested edit on Initial value $\left ( \frac{dy}{dt} \right )+3y=11$, $y(0)=1$
Aug
15
reviewed Approve suggested edit on How to form a simplicial complex?
Aug
15
reviewed Approve suggested edit on How does this equal negative $-\frac{\pi}{2}$
Aug
15
reviewed Approve suggested edit on Why are people more interested in the Riemann hypothesis than Goldbach's conjecture?
Aug
14
comment Does $2+2$ really equal $4$?
that paper is just a joke
Aug
14
answered Does $2+2$ really equal $4$?
Aug
14
reviewed Approve suggested edit on Largest possible mean deviation
Aug
10
awarded  Nice Question
Aug
9
reviewed Approve suggested edit on Find the matrix that represents a rotation clockwise around the origin by$ 30∘$ followed by a magnification by a factor of 4.
Aug
9
revised Automorphisms of splitting field of $x^p-x-a$
edited body
Aug
9
answered Automorphisms of splitting field of $x^p-x-a$
Aug
9
reviewed Approve suggested edit on Let functions $ f: A \to B$ and $g: B \to A$, suppose that $ g \circ f = i_A$. Prove that if $f$ is onto, then $g$ is one-to-one
Aug
7
reviewed Approve suggested edit on The (un)decidability of Robinson-Arithmetic-without-Multiplication?
Aug
7
reviewed Approve suggested edit on Solving the logarithimic inequality $\log_2\frac{x}{2} + \frac{\log_2x^2}{\log_2\frac{2}{x} } \leq 1$