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1 answers
6 votes
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Are there closed curves for which acceleration is orthogonal to position?
1 answers
5 votes
145 views
Can the equality $e^{-tY}Me^{tY} = e^{tX}M $ be shown by showing it only to 1st order? (Lie representations)
1 answers
3 votes
214 views
Contraction of multivectors
1 answers
2 votes
4k views
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Green's function For Helmholtz Equation in 1 Dimension
1 answers
2 votes
32 views
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Can we write the real part of this expression?
0 answers
2 votes
2k views
2 bookmarks
Branch Cut for $\ln(1 - z^2)$
2 answers
1 votes
63 views
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What is the Green's function of $\partial_x^2 + \partial_y^2 + ia\partial_z $?
1 answers
1 votes
6k views
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Finite Difference Boundary Conditions
0 answers
1 votes
153 views
Lagrange Multipliers with Calculus of Variations
1 answers
0 votes
77 views
Expression for $\sum_n n^a/n!$
1 answers
0 votes
1k views
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3D Fourier transforms of $e^{-\beta r} $ and $re^{-\beta r} $
1 answers
0 votes
1k views
Derivatives of Norms and Absolute Values (distributions)