Tracially complete C*-algebras
Carrión, J
Castillejos, J
Evington, S
Gabe, J
Schafhauser, C
Tikuisis, A
White, S
Memoirs of the American Mathematical Society
Tue, 20 Oct 2026
15:30
15:30
L4
The logarithmic derived category
Patrick Kennedy-Hunt
(Cambridge)
Abstract
As a scheme undergoes a simple normal crossing degeneration its coherent sheaves - and their derived category - behave unpredictably. In this talk I will describe a proposal for a category of logarithmic (quasi-)coherent sheaves associated to such a degeneration. The corresponding derived category exhibits Grothendieck-Neeman duality with the expected dualizing complex, and has a perfect diagonal (the categorical signature of smoothness). Structures on the logarithmic derived category of the central fibre most closely resemble the smooth situation when considered relative a tropical derived category. This category is compatible with Maulik and Ranganathan’s logarithmic Donaldson—Thomas theory and has an associated (logarithmic) moduli stack of logarithmic coherent sheaves.
Based on joint work with De Deyn, Dell, Hu, Manali-Rahul, and Schimpf, and on separate joint work with Poiret, and Song for the moduli stack.
Reply: Is the entorhinal signal a tau origin or a treatment-relevant vulnerability map?
Chaggar, P
Alexandersen, C
Bassett, D
Goriely, A
Brain
(05 Oct 2026)
doi:10.1093/brain/awag331
The effect of natural climate variability on future vector-borne disease suitability: a mathematical modelling study
Kaye, A
Sun, L
Hart, W
Hurrell, J
Tildesley, M
Thompson, R
PLOS Climate
volume 5
issue 8
(18 Aug 2026)
doi:10.1371/journal.pclm.0000877
If, like your Bulletin editor, you can't remember what was in the Bulletin last week, you can now access previous Bulletins via a link at the bottom of each week's Bulletin. I would put the link here as well, but you might miss Song of the Week if I did.
Thanks to marvellous Dave Miller in IT for setting it up.
Endemic and epidemic human alphavirus infections in Eastern Panama; An Analysis of Population-based Cross-Sectional Surveys.
Carrera, J
Cucunuba, Z
Neira, K
Lambert, B
Pitti, Y
Jackman, C
Liscano, J
Garzon, J
Beltran, D
Collado-Mariscal, L
Saenz, L
Sosa, N
Rodriguez-Guzman, L
Gonzalez, P
Lezcano, A
Pereyra-Elias, R
Valderrama, A
Weaver, S
Vittor, A
Armien, B
Pascale, J
Donnelly, C
doi:10.64898/2026.04.04.19007310
Cormac McCarthy write a novel, later a film, entitled No Country for Old Men. He can't have had music country in mind. Eightysomethings the Rolling Stones and Paul McCartney has just released new albums and Tom 'the Voice' Jones is still going strong at 86. Do eightysomethings in the audience still throw their underwear at him?
This is his two-minute masterpiece. Jimmy Page from Led Zeppelin says he played as a session musician on the track.
Noncommutative Poisson boundaries and Furstenberg–Hamana boundaries of Drinfeld doubles
Habbestad, E
Hataishi, L
Neshveyev, S
Journal Des Mathematiques Pures Et Appliquees
volume 159
313-347
(01 Mar 2022)
doi:10.1016/j.matpur.2021.12.006