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Jul
5
asked A theorem of Cartan
Jul
4
accepted Every prime is maximal in a Jacobson ring?
Jul
4
comment equivalent definitions of tensorfields
@jack lee Oh I have an older edition of the same, in which I didn't succeed to find it! A great book however! Very clear and inspiring!
Jul
4
asked equivalent definitions of tensorfields
Jun
27
comment principal curvature of the flat torus
Ofcourse, I get confused in finding the normal space, unused to complex scalar products or something. Thank you very much, now the result follows trivially
Jun
27
accepted principal curvature of the flat torus
Jun
27
asked principal curvature of the flat torus
May
25
asked Geodesic equation applied to halfplane model
May
11
accepted Calculate the pushforward of smooth map between manifolds
May
10
asked Calculate the pushforward of smooth map between manifolds
May
9
awarded  Critic
May
9
accepted Smooth chart in what sense?
May
3
asked Smooth chart in what sense?
Apr
4
comment Every prime is maximal in a Jacobson ring?
k.stm thank you!
Apr
3
asked Every prime is maximal in a Jacobson ring?
Mar
30
comment Finding stabilizer under group action (Erlangen)
Good idea, I did so.
Mar
30
revised Finding stabilizer under group action (Erlangen)
deleted 406 characters in body
Mar
30
asked Similarity transformation versus Möbius transformation
Mar
30
asked Finding stabilizer under group action (Erlangen)
Mar
26
accepted Calculate area with cross ratio