915 reputation
512
bio website
location Oslo, Norway
age 26
visits member for 4 years, 2 months
seen 6 mins ago

Master student in algebraic topology at the University of Oslo.


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?
deleted 111 characters in body
May
4
revised Is there a noetherification of locally noetherian schemes?
deleted 48 characters in body; edited body
May
4
asked Is there a noetherification of locally noetherian schemes?
Apr
28
comment Natural Isomorphism $\mbox{Hom}(\oplus_\alpha A_\alpha,G) \simeq \prod_\alpha \mbox{Hom}(A_\alpha,G)$
@Qwirk: That's precicely what happens in this case as well, but with different words in it. By definition, a morphism from the coproduct is the same thing as a morphism from each of its factors.
Apr
25
answered The $d$ in Leibniz's Notation
Apr
25
revised Usage of dx in Integrals
added 1 characters in body
Apr
25
revised Why is one “$\infty$” number enough for complex numbers?
minor.
Apr
25
comment What is a natural isomorphism?
Nice meta-observations :)
Apr
25
comment A question on differentiability of the inverse of strictly monotonically increasing functions
Yup, the answers down below cover it. Just to be sure you're not missing out on anything; the inverse $f^{-1}$ of a real to real function can aquired from the graph of $f$ by just flipping the xy plane along the diagonal. If you haven't already you might find it worthwhile to connect the algebraic picture below with this geometric picture.
Apr
9
comment How to “grok all the major pieces” of math
+1 for category theory.
Apr
9
comment How can there be alternatives for the foundations of mathematics?
Interesting! I've been hoping you could get around it somehow.
Apr
9
revised How can there be alternatives for the foundations of mathematics?
added 12 characters in body
Apr
9
comment How can there be alternatives for the foundations of mathematics?
You talking about the appendix which I removed? Sheaf topoi are Grothendieck topoi. I'm not entirely sure how this all ties together. But it's a huge and interesting field no less.
Apr
9
revised How can there be alternatives for the foundations of mathematics?
No point to have that unfinished appendix hanging around.; added 608 characters in body
Apr
9
answered How can there be alternatives for the foundations of mathematics?
Apr
8
awarded  Nice Answer
Apr
8
answered Intuition behind Matrix Multiplication
Apr
7
comment Proof of the formula $1+x+x^2+x^3+ \cdots +x^n =\frac{x^{n+1}-1}{x-1}$
Oh gee of course! :p