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Mar 25, 2020 at 23:05 comment added Andrés Ibáñez Núñez I think there is a problem with the 0 object. Bridgeland says that the $\mathcal P (\phi)$'s are full additive subcategories. In particular they have a zero object. He really means additive, and not preadditive, as can be observed in the proof of Lemma 5.2 in the article. Nevertheless this seems easy to fix, just asking objects to be nonzero in the relevant axioms.
Feb 29, 2016 at 18:07 comment added Sasha I used your link (bottom of page 2).
Feb 29, 2016 at 17:55 comment added Xuqiang QIN Thanks for the great answer. One follow up: it seems you are using a different reference for the def of slicing than me( I noticed the difference in the indices, but of course the main contents of the def are the same), would you be able to share a link of it with me so that I can compare them?
Feb 29, 2016 at 17:50 vote accept Xuqiang QIN
Feb 29, 2016 at 17:17 history answered Sasha CC BY-SA 3.0