6

Questions
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Is the limit of symplectic diffeomophisms a diffeomorphism?

jul 22 10 at 8:11 Diego Matessi 793●7●9

 
4
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1
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178
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Minimizing action squared versus action

aug 11 at 11:22 MathOverflow♦ 1●2●3

 
3
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Are all null curves of a Lorentzian metric extrema?

mar 9 at 15:42 Robert Bryant 22.4k●3●75●98

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Morse Theory on Non-smooth Manifolds

jul 22 10 at 21:07 Victor Protsak 7,871●1●30●44

 
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Extending linear operators to multi-linear ones

feb 14 11 at 0:01 Andreas Blass 33.8k●4●59●111

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Reference for a derivative formula for matrices

aug 29 at 18:31 Kjetil B Halvorsen 916●5●8