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| bio | website | |
|---|---|---|
| location | ||
| age | ||
| visits | member for | 1 year, 9 months |
| seen | 2 days ago | |
| stats | profile views | 175 |
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Nov 7 |
comment |
Homotopy hypothesis and other geometric objects @JoeJohnson126 Homotopy hypothesis. Essentially, it says that spaces up to weak equivalence = $\infty$-groupoids. |
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Nov 7 |
comment |
Homotopy hypothesis and other geometric objects What are "other geometric objects"? |
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Oct 3 |
revised |
Why is kernel important? edited tags |
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Oct 3 |
comment |
Prove $0! = 1$ from first principles Wow, I've been coding too much lately and read this question as asking to show 0 != 1, (or for the non coders $0\neq 1$). |
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Oct 1 |
awarded | Civic Duty |
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Sep 27 |
comment |
Show that $x \ln(ex) - \sqrt{x}\geq 0$ for all $x\geq 1$ @JulianAssange See my answer... |
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Sep 27 |
answered | Show that $x \ln(ex) - \sqrt{x}\geq 0$ for all $x\geq 1$ |
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Sep 11 |
comment |
Direct and inverse limits of sheaves It's worth mentioning that the reason the presheaf limit of a diagram of sheaves is a sheaf while the same need not be true for colimits is because the forgetful functor from sheaves to presheaves is a right adjoint and so preserves limits (its left adjoint is the sheafification functor.) |
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Sep 7 |
revised |
Is there any good reads for Goodwillie calculus out there? edited tags |
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Sep 7 |
answered | Is there any good reads for Goodwillie calculus out there? |
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Sep 7 |
answered | Cokernels - how to explain or get a good intuition of what they are or might be |
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Sep 3 |
comment |
Calculation of Vectors Please proofread your post before pressing submit... |
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Aug 29 |
comment |
When can a series be integrated term by term? The Dominated Convergence Theorem applies here if you're talking about the Lebesgue integral. |
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Aug 29 |
awarded | Cleanup |
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Aug 29 |
revised |
If $A$ and $B$ are compact, then so is $A+B$. rolled back to a previous revision |
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Aug 28 |
answered | $\mathbb{Z}$ has no torsion? |
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Aug 19 |
awarded | Yearling |
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Jul 8 |
revised |
Subgroup Test with Conditions added 32 characters in body; edited title |
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Jul 8 |
comment |
Pullbacks of categories I don't know any thing about limits in 2-categories, but the definition of a pseudo 2-pullback looks like a homotopy pullback with truncated homotopy coherence conditions. This makes sense, as limits in an $\infty$-category are homotopy limits, so perhaps this could be a direction to look? |
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Jul 8 |
comment |
From Presheaf to Sheaf @Hurkyl You're right, thank you. I was trying to give a more intuitive explanation, but I guess I changed the definition in the process! |
