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location Oslo, Norway
age 26
visits member for 4 years, 1 month
seen Aug 5 at 16:00

Master student in algebraic topology at the University of Oslo.


Jun
19
revised What happens geometrically when the Jacobson radical is non-zero?
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Jun
19
revised What happens geometrically when the Jacobson radical is non-zero?
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Jun
18
revised What happens geometrically when the Jacobson radical is non-zero?
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Jun
18
revised What happens geometrically when the Jacobson radical is non-zero?
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Jun
18
comment What happens geometrically when the Jacobson radical is non-zero?
Naturally I do not think there is actually anything wrong with it. I removed the comment on separation; oops. I also tweaked the question, since we're not actually looking at the ring of real-valued functions on an affine scheme. I'm looking for intuition, and phenomena which can be directly attributed to a non-vanishing Jacobson radical $J$. How does for instance the space $Spec(A/J)$ look compared to $Spec(A)$. Hopefully the question is in better shape now. Thanks for the feedback!
Jun
18
revised What happens geometrically when the Jacobson radical is non-zero?
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Jun
18
comment What happens geometrically when the Jacobson radical is non-zero?
Old habit from writing mails, but I might as well stop if anyone feels it worth commenting on.
Jun
18
asked What happens geometrically when the Jacobson radical is non-zero?
Jun
13
comment etale space v. covering space
So covering map $\Leftrightarrow$ étale map? This is a surprise to me. I think my attempts to locally trivialize an arbitrary étale map rely on tacit assumptions.
Jun
11
comment How to study math to really understand it and have a healthy lifestyle with free time?
I'd try to get an overview of whatever I'm learning first. I'd like to think of it as a big canvas; fill in the details according to whatever piques your interest. You absolutely positively can't learn everything (not even close), but you can learn top-down instead of bottom-up. For your comments on rigour, you might find this interesting: cheng.staff.shef.ac.uk/morality/morality.pdf
May
28
asked What is the universal property of the tangent bundle of a smooth manifold?
May
25
comment Is there a universal property of $\text{Spec}(-)$?
Exactly; thank you!
May
25
accepted Is there a universal property of $\text{Spec}(-)$?
May
25
comment Is there a universal property of $\text{Spec}(-)$?
I clarified this assumption in the OP.
May
25
revised Is there a universal property of $\text{Spec}(-)$?
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May
25
comment Is there a universal property of $\text{Spec}(-)$?
I knew about that, but I'm thinking about $\text{Spec}$ as a functor $\text{Ring}^{op}\to\text{LRSpaces}$. This question may still be silly though :)
May
25
asked Is there a universal property of $\text{Spec}(-)$?
May
19
answered Soft Question - Intuition of the meaning of homology groups
May
7
revised Is there a noetherification of locally noetherian schemes?
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May
4
revised Is there a noetherification of locally noetherian schemes?
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