Timeline for A question on Grothendieck Riemann Roch
Current License: CC BY-SA 3.0
12 events
| when toggle format | what | by | license | comment | |
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| Mar 10, 2018 at 16:44 | vote | accept | Mohsen Karkheiran | ||
| Mar 8, 2018 at 17:17 | history | edited | Peter LeFanu Lumsdaine | CC BY-SA 3.0 |
improved formatting (LaTeX is for math content; for formatting text, use markdown)
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| Mar 8, 2018 at 7:23 | answer | added | Mohsen Karkheiran | timeline score: 8 | |
| Mar 8, 2018 at 6:54 | history | edited | Mohsen Karkheiran | CC BY-SA 3.0 |
added 71 characters in body
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| Mar 8, 2018 at 6:51 | comment | added | Mohsen Karkheiran | Also thanks for mentioning the higher direct image mistake. | |
| Mar 8, 2018 at 6:45 | comment | added | Mohsen Karkheiran | Thanks, Jim. About the singularity of $X\times_B X$, I agree with you. | |
| Mar 8, 2018 at 6:37 | comment | added | Jim Bryan | $P_*(\sigma) = B=1$ and $P_*(1)=0$. Note that $P_*$ reduces the cohomological degree by 2. You are using interchangeably a cohomology class of degree $d$ and the corresponding cycle of co-dimension $d$. The image of the co-dimension cycle $\sigma$ under $P$ is the co-dimension 0 cycle $B$ which corresponds to the cohomology class 1. | |
| Mar 8, 2018 at 6:27 | comment | added | Jim Bryan | The lefthand side should have a $R^1\pi_{2*}\cal{O}$ term as well. Also, you have to be careful computing the relative Todd class because your total space isn't smooth (you will get singularities over the discriminant locus in $B$. | |
| Mar 8, 2018 at 5:34 | history | edited | Mohsen Karkheiran | CC BY-SA 3.0 |
edited tags; edited title
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| Mar 8, 2018 at 5:05 | history | edited | Mohsen Karkheiran | CC BY-SA 3.0 |
added 406 characters in body
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| Mar 8, 2018 at 4:25 | history | edited | Mohsen Karkheiran | CC BY-SA 3.0 |
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| Mar 8, 2018 at 3:13 | history | asked | Mohsen Karkheiran | CC BY-SA 3.0 |