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May
12
asked Numerically stable calculation of multinomial probabilities
May
6
awarded  Announcer
May
6
awarded  Curious
May
5
accepted Is there a probability distribution with mean $1$ such that $f(x)=\frac{1}{x}f\left(\frac{1}{x}\right)$
May
5
comment Is there a probability distribution with mean $1$ such that $f(x)=\frac{1}{x}f\left(\frac{1}{x}\right)$
It does not verify $f(x) = \frac{1}{x} f(\frac{1}{x})$, and it doesn't even have a finite integrale over $\mathbb{R}^+$ ??
May
5
revised Is there a probability distribution with mean $1$ such that $f(x)=\frac{1}{x}f\left(\frac{1}{x}\right)$
deleted 482 characters in body
May
5
revised Is there a probability distribution with mean $1$ such that $f(x)=\frac{1}{x}f\left(\frac{1}{x}\right)$
added 133 characters in body
May
5
revised Is there a probability distribution with mean $1$ such that $f(x)=\frac{1}{x}f\left(\frac{1}{x}\right)$
added 91 characters in body
May
5
asked Is there a probability distribution with mean $1$ such that $f(x)=\frac{1}{x}f\left(\frac{1}{x}\right)$
Apr
17
accepted finite dimensional vector spaces of functions left invariant by translation
Apr
16
comment finite dimensional vector spaces of functions left invariant by translation
Assuming $f$ is differentiable, can we show every such subspace is spanned by $\{ e^{\lambda x} x^k \sin x, e^{\lambda x} x^k \cos x\}$ ?
Apr
16
comment finite dimensional vector spaces of functions left invariant by translation
I never claimed that those spaces spanned the entire space, this isn't the purpose.
Apr
16
asked finite dimensional vector spaces of functions left invariant by translation
Mar
17
comment Can you recommend a book to learn to teach math to a child?
The book is for the teacher, not the child. And yes, that particular book is appropriate for your purpose. Think instead of patttern matching.
Jan
7
comment Can you recommend a book to learn to teach math to a child?
The full book seems available here: msri.org/people/staff/levy/files/MCL/Zvonkin.pdf
Jan
7
comment Can you recommend a book to learn to teach math to a child?
Wonderful, I actually posted an link to an excerpt of this book, but I didn't know what the book was. I think I actually may have had Dimitri as a "colleur" in 2000.
Jan
7
accepted Can you recommend a book to learn to teach math to a child?
Jan
7
awarded  Nice Question
Jan
7
revised Can you recommend a book to learn to teach math to a child?
added 104 characters in body
Jan
7
answered Can you recommend a book to learn to teach math to a child?