blog:2023-04-22
Differences
This shows you the differences between two versions of the page.
| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| blog:2023-04-22 [2023/04/22 10:50] – pzhou | blog:2023-04-22 [2023/06/25 15:53] (current) – external edit 127.0.0.1 | ||
|---|---|---|---|
| Line 13: | Line 13: | ||
| Now, here are the problems | Now, here are the problems | ||
| - | ==== 1 ==== | + | ==== Major Issues |
| + | |||
| + | === 1 === | ||
| Where is the key estimate | Where is the key estimate | ||
| $$ SS(\pi_* Sh(\La_B)) \In \pi_*(SS(Sh(\La_B)) $$ | $$ SS(\pi_* Sh(\La_B)) \In \pi_*(SS(Sh(\La_B)) $$ | ||
| Line 21: | Line 23: | ||
| Hmm, I justed bluffed that this is obvious, but now I am caught here. But, why is it not obvious? Naively, the singular support of a sheaf of anything is defined by the nearby cycle functor, no? | Hmm, I justed bluffed that this is obvious, but now I am caught here. But, why is it not obvious? Naively, the singular support of a sheaf of anything is defined by the nearby cycle functor, no? | ||
| + | |||
| + | OK, I see. The referee is complaining I am using a seemingly different notion of singular support for categories than Kashiwara-Schapira. Indeed, when the space is stratified, and we have a priori bound, then maybe we can use the old notion. | ||
| + | |||
| + | OK, indeed, I will say singular support for stable categories as is, and only remark that in case of constructible sheaves, this can be checked without much effort. | ||
| + | |||
| + | Not a big deal :) | ||
| + | |||
| + | === 2 === | ||
| + | Aha, classically generate means the smallest stable subcategories that contains these object. | ||
| + | |||
| + | Good question, why do they generate, well because back in $\La_{\C^N}$, | ||
| + | |||
| + | As David Nadler says "the only nice construction in category is universal construction' | ||
| + | |||
| + | ok,this is already on p22. | ||
| + | |||
| + | === 3 === | ||
| + | Not a big deal, just need to add: because in this grid stratified case, singular support can be estimated easily. | ||
| + | |||
| + | ==== Minor Issues ==== | ||
| + | |||
| + | 1. I really need to be precise! ahh. being complained. so, let me be more precise. Constructible sheaf with stratification $S$ is related to Lagrangians with singular support $\Lambda_S$. | ||
| + | |||
| + | 2. yes, Segal introduced this notion. | ||
| + | |||
| + | 3. better reference habit, give precise reference. Yes, we understand you are lazy, but please don't be lazy. | ||
| + | |||
| + | 4. give reference to the later introduced FLTZ skeleton. | ||
| + | |||
| + | 5. indeed, the notion of partially wrapped CCC is new. let me think how to recover that. I think this is best done by this: starting from the equivariant CCC, then on the B-side, we de-equivariantize on a subgroup, meaning we forget the equivariant structure. | ||
| + | |||
| + | ... | ||
| + | |||
| + | 6. yes, forward reference about symplectic reduction should be given. | ||
| + | |||
| + | 7. | ||
blog/2023-04-22.1682160613.txt.gz · Last modified: 2023/06/25 15:53 (external edit)