5,473 reputation
3622
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location France
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visits member for 1 year, 7 months
seen 5 hours ago

I'm a postdoc at LIUM in France, working in Machine Learning (statistical machine translation), although my thesis was on mathematical analysis of Evolutionary Algorithms (EAs), therefore my skills revolve around probability, Markov chains, calc/analysis, asymptotics and a bit of combinatorics.

I'm here mostly to learn and improve my skills, so please don't expect much rigor or proficiency from me.

This is my Academia profile if you are interested in my work for some reason.


Apr
17
comment Discrete Mathematics: Prove that f(x) is in O(x)
Take the limit of your function and $3x$ as $x \to \infty$. What do you get?
Apr
17
comment Discrete Mathematics: Prove that f(x) is in O(x)
$\frac{1}{x+1}<\frac{1}{x}, x< x^2$ for $x >1$
Apr
17
comment Discrete Mathematics: Prove that f(x) is in O(x)
@A̷n̷d̷y̷: please next time show what you have tried
Apr
17
revised Discrete Mathematics: Prove that f(x) is in O(x)
deleted 51 characters in body; edited tags
Apr
17
answered Discrete Mathematics: Prove that f(x) is in O(x)
Apr
14
comment How to integrate: $\int _{-1}^1\left(4x+1\right)\sin \left(x^2+x\right)\cos \left(x^2\right)dx\:$
expand $\sin(x^2 +x)$ and then use $2 \sin x^2 \cos x^2 = \sin 2 x^2$
Apr
14
revised Problem about proving fermat's little theorem
added 52 characters in body
Apr
12
comment Jumping back into Calculus III
what does Calc III cover?
Apr
12
comment How to differentiate this
You are welcome
Apr
12
comment How to differentiate this
This is an extension of this idea for $f(x)$: wolframalpha.com/input/?i=diff%28log%28f%28x%29%29%2Cx%29
Apr
12
comment How to differentiate this
take a derivative of $\log$ function. Can you do it?
Apr
12
answered How to differentiate this
Apr
11
revised Show that if for $n \ge 1$, $(X_0, \ldots, X_n)$ has probability function $f_n$, then $X$ is a Markov Chain with transition matrix $\mathbb P$
added 1 characters in body; edited title
Apr
9
comment Solving $(\cos\alpha-\lambda)^2+\sin^2\alpha=0$ for $\lambda$.
should it be $\mp i \sin x$?
Apr
9
revised Prove that a constant multiplied by a Poisson random variable is not Poisson
added 6 characters in body
Apr
8
comment Definition of the $\sec$ function
mathworld.wolfram.com/Secant.html has some information
Apr
8
comment Big O notation preserved under convex functions?
what does it mean for a rv to be $O(\cdot)$?
Apr
8
revised Big O notation preserved under convex functions?
edited tags
Apr
8
comment What does dx mean?
math.stackexchange.com/questions/143222/what-does-dx-mean?rq=1
Apr
8
revised Integral $\int\sqrt{\sin2x}\operatorname d\!x$
edited title