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Christophe Leuridan

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17
Can nonnegative functions $f(x,y,z)$ be written as a product of pairwise functions $u(x,y) v(y,z) w(x, z)$?
mathoverflow.net

16
Examples of bad notation and its consequences
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11
If Series $\sum \sqrt\frac{a_n}{n}$ converges then $\sum a_n$ converges?
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9
Sophomore's Eternal Dream $\int_0^1\cdots\int_0^1 (t_1t_2\cdots t_n)^{t_1t_2\cdots t_n} dt_1 dt_2\cdots dt_n$
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8
Inequality on Brownian motions and Ito integrals
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8
Integration cannot be replaced by discrete sum
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8
Conjecture: If matrix $M$ has entries (left to right, then top to botom) $\sin 1,\sin 2,\sin 3,\dots,\sin (n^2)$, where $n\ge 3$, then $\det M = 0$.
math.stackexchange.com

8
If $n=2m$, what is the order of the permutation $\sigma(k)=2k , \quad \sigma(m+k)=2k-1$
mathoverflow.net

8
Solving a limit about sum of series
mathoverflow.net

7
Square root of prime numbers
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7
Forcing the uniqueness of a solution of an ODE
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7
Concentration of measure on sphere: Bounding the probability of a large angle
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7
How to get the distribution of a random variable from the distribution of their summation?
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7
Integrating the exponential of distance to a convex bounded set
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6
Does $A=B$ imply that the rank of $A$ equals the rank of $B$?
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6
Sequence of continuous fractions 1 , 1/2 , (1/2)/(3/4) ...
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6
Existence of weird complex norms
mathoverflow.net

5
Billingsley Problem 9.4: Applications of the law of iterated logarithms
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5
Rigorous estimates on roots of function
mathoverflow.net

5
Can $f(x)$ and $f(1/x)^x$ be both completely monotone?
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5
$P(X > Y) = ?$ when $X,Y \stackrel{iid}{\sim} \text{Bin} \left(n, \frac{1}{2} \right)$
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5
How to show that the random variable $Y$ is independent of $\sum\limits_{i} X_i^2-Y^2$.
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