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1d
awarded  Nice Question
2d
revised What curved ramp transports a ball from (1,1) to (0,0) most quickly, under the acceleration of gravity, with no friction or air resistance?
edited tags
Jun
28
asked Is there a readable diagram illustrating all the Tauberian-type theorems?
Jun
22
answered Is there a mathematical way to determine a solution for puzzle games?
Jun
22
revised Is there a mathematical way to determine a solution for puzzle games?
edited tags
Jun
21
awarded  algebraic-geometry
Jun
19
answered Desingularization of curves
Jun
19
answered Calculating intersection number of $(x^2+y^2)^3-4x^2y^2=0 $ and $x=0$ at $(0,0)$
Jun
18
comment “Projective tangent space” to a projective variety
Thanks! After some further searching (I was looking for "extrinsic tangent space" at first, and only later realized it's more widely called the "projective tangent space") I've also seen $\widetilde{T}_x V$ in the literature, I guess by analogy with the affine cone thing above.
Jun
18
asked Is it possible to describe the places of $K$ purely in terms of the algebra of $\mathcal{O}_K$?
Jun
18
asked “Projective tangent space” to a projective variety
Jun
17
comment Permutation representations of finite abelian groups
I don't know how much more theory there can be. So far as I know permutation representations aren't studied as their own subject; they're subsumed into linear representations, which are the "correct" thing to look at.
Jun
17
comment Notation for binary permutation
It's not clear from your example what you're trying to describe. Can you explain the desired outcome for $x = 4$ and $x = 30$, for instance?
Jun
17
answered Permutation representations of finite abelian groups
Jun
17
revised Translation from schemes to varieties
added 161 characters in body
Jun
17
comment Help in this teminology in Hartshorne's algebraic geometry book
The second sentence is technically correct but a bit misleading, as it doesn't explain when two elements $m/s$, $m'/s'$ are equal to one another.
Jun
16
asked Which functions solve autonomous ODEs?
Jun
16
revised Translation from schemes to varieties
added 3 characters in body
Jun
16
comment Calculating global sections of sheaves
Given a particular $f \in \mathbb{C}(t)^\ast$, say $f = \dfrac{t^2 - 3t + 2}{t + 4}$, can you calculate $\operatorname{div}(f)$?
Jun
16
revised Translation from schemes to varieties
deleted 105 characters in body