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I study the Nonlinear Schrodinger Equation.

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Top posts (526) All Questions Answers | Votes Newest

26 A ping-pong ball lying inside a wine glass Sep 25 '16
12 Why does this ln function inverse? Aug 31 '18
12 Interesting Olympiad Style Problem about Invariance Dec 30 '17
10 $f:A\to B$ and $g:B\to A$ two functions such that $f\circ g\circ f$ is bijective. Then so are $f, g$ Nov 5 '17
8 Find the probability that the thirteenth spade will appear before the thirteenth diamond? Sep 29 '18
8 [Proof Verification]: The closure of a set is closed. Jan 23 '17
6 Interesting Olympiad style problem. Dec 30 '17
5 If $A$ has eigenvalues $\{\lambda_1,\lambda_2,…,\lambda_k\}$ then does $A^n$ have only $\{\lambda^n_1,\lambda^n_2,…,\lambda^n_k\}$ as eigenvalues? [duplicate] Jan 9 '18
5 Let $A$ and $B$ be square real matrices such that $A+iB$ is non-singular. Show that there exists $t\in \mathbb{R}$ such that $A+tB$ is non-singular. Jan 5 '18
5 Tricky Double integral over a union of two regions. May 5 '17
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