Timeline for triangulated vs. dg/A-infinity
Current License: CC BY-SA 2.5
3 events
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| Feb 8, 2010 at 19:35 | comment | added | Ben Webster♦ | Yes, it's the endomorphism dg-algebra (I tend to think of it as an Ext-algebra because I'm usually thinking of dg-enhancements of triangulated categories. The equivalence is Hom with the object. I read about this in the survey paper on Keller's website, but the theorem is easy once you have the courage to believe it. | |
| Feb 8, 2010 at 18:45 | comment | added | Gerrit Begher | I have two questions concerning your post: The Ext-algebra you're talking about - is it the endomorphism dg-algebra or is there some construction involved? Could you post a reference for the construction of the equivalence you mentioned and give an example of where this fails if you take only the graded algebra? | |
| Oct 17, 2009 at 4:00 | history | answered | Ben Webster♦ | CC BY-SA 2.5 |