whereamI

# 29 Questions

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### If $M_t$ and $M^2_t-t$ are martingales, do we have $\langle M\rangle_t=t$?

Mar 30 at 22:01 whereamI 377

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### $f$ is holomorphic then there exists $F$ such that $f=exp(F)$ [duplicate]

Mar 29 at 20:40 whereamI 377
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111
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46
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49
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43
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128
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### An example in $H^1$ but not continuous other than a singular function

Mar 13 at 4:44 Lion 1,803

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20
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### Density of polynomials in $C^{2,1}_{x,t}$

Feb 27 at 5:35 whereamI 377

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### $\left(\int_\Omega \left\vert D^\alpha \frac{1}{|x|}\right\vert^2|x|^{2(\beta+k)}dx\right)^{1/2}\leq C(d)^kk!,\quad\forall |\alpha|=k\in \mathbb{N}$?

May 30 '18 at 7:21 whereamI 377

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61
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27
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### How to prove the limit $\lim_{k\rightarrow\infty}\lambda^{k-j}\binom{k}{k-j}=0,\; k>j,$ and $k\gt j$

Jan 20 at 20:01 jordan_glen 1

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48
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### Analytic function $f$ either constant or surjective on unit disk.

Dec 9 at 16:24 whereamI 377

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### Interpolation polynomial for $f=|x|$.

Sep 20 at 15:28 whereamI 377
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