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revised Infinity isn't a Number
deleted 5 characters in body
Apr
22
revised A simple arithmetic puzzle
edited tags
Apr
22
comment Every variety contains open affine normal subvariety
Right, but what I meant is that he has to establish that the set of normal points is open and nonempty.
Apr
22
answered Correspondence between morphism and ring of regular functions
Apr
21
revised Build sheaf from stalks
added 192 characters in body
Apr
21
comment Every variety contains open affine normal subvariety
You also need that $V$ is nonempty here.
Apr
21
comment Build sheaf from stalks
I've added something to address the other possible interpretation of the question.
Apr
21
revised Build sheaf from stalks
added 360 characters in body
Apr
21
revised Build sheaf from stalks
deleted 2 characters in body
Apr
21
answered Build sheaf from stalks
Apr
20
answered image of Segre-Veronese as a tuple of polynomials
Apr
20
awarded  Civic Duty
Apr
20
revised Manifold over a Finite Field
added 20 characters in body
Apr
20
answered Manifold over a Finite Field
Apr
14
answered Surface constructed using curves
Apr
10
comment All prime ideals are maximal - Counterexample
Why do you think that? He clearly knows a lot of math if he's formulating his own questions about prime ideals, and there's nothing here above a high-school level that I'm not just giving to him as a black box. If there's anything unclear to him he's free to ask me a question in the comments.
Apr
10
comment All prime ideals are maximal - Counterexample
The point of the answer was to expose him to algebraic geometry, without which commutative algebra feels almost nonsensical.
Apr
10
answered All prime ideals are maximal - Counterexample
Apr
10
answered What are the interesting applications of hyperbolic geometry?
Apr
9
revised Wedge Product Formula For Sine. Analogous Formula Generalizing Cosine to Higher Dimensions?
edited tags