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UID:pretalx-qtcat-2026-DRCAUD@pretalx.c3voc.de
DTSTART;TZID=CET:20260813T113000
DTEND;TZID=CET:20260813T120000
DESCRIPTION:While there are several formalisms for quantum field theory\, a
  rigorous mathematical description is still not available. In some areas\,
  as for example in conformal field theory\, one is better equipped and pro
 per definitions like vertex algebras can be made.\n\nBy introducing the co
 ncept of a chiral algebra on an algebraic curve\, Beilinson and Drinfeld h
 ave provided a reformulation of vertex algebras that centers around the si
 milarity between the operator product expansion and the Jacobi identity fo
 r Lie algebras. Concretely\, a chiral algebra is a Lie algebra in the cate
 gory of D-modules. While for vertex algebras a generalisation to algebraic
  varieties of higher dimension seems very difficult\, higher chiral algebr
 as can be defined within the theory of quasi-categories. Via a polysimplic
 ial model of the derived sections on configuration spaces\, in joint work 
 with Zhengping Gui and Charles Young\, we have shown that the fundamental 
 example reassembles a strong homotopy Lie algebra. \n\nLurie introduced a 
 construction in the topological setting that links En-algebras to factoris
 ation algebras\, the Koszul dual of chiral algebras. Together with Keyou Z
 eng\, our aim is to unify both pictures with the purpose of describing mix
 ed topological/holomorphic theories in analogy to the notions of raviolo v
 ertex algebras and configuration spaces as described in Alfonsi\, Kim\, Yo
 ung.
DTSTAMP:20260812T202112Z
LOCATION:R. 221
SUMMARY:From Higher to Raviolo Chiral Algebras - Laura Olivia Felder
URL:https://pretalx.c3voc.de/qtcat-2026/talk/DRCAUD/
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UID:pretalx-qtcat-2026-X8JHS9@pretalx.c3voc.de
DTSTART;TZID=CET:20260813T153000
DTEND;TZID=CET:20260813T170000
DESCRIPTION:Claiming that big tech companies have been our allies would be 
 quite a stretch. The good news are you don't have to rely on their servers
  to bring your activism (or whatever else you might want to host) online.\
 n\nIn times of looming censorship\, privacy violation\, right wing propaga
 nda & lobbying digital sovereignty becomes increasingly relevant.\nIn this
  mini workshop I will set up a web server (based on Debian\, Apache\, PHP 
 & MariaDB) on an old raspberry pi from scratch. With that you can run smal
 ler websites and even open source cloud platforms like Nextcloud from your
  living room with energy consumption under 30kWh per year. I will assume o
 nly basic IT skills\, explain the fundamentals on the go and share the cod
 e I use. You can also bring your own device and follow along!\n\nI will us
 e the following equipment:\n - Raspberry Pi 3B+\n - empty micro SD card wi
 th minimum 8GB\n - micro USB phone charger (USB type C for newer models)\n
  - ethernet cable
DTSTAMP:20260812T202112Z
LOCATION:Workshop 2
SUMMARY:Self hosting for beginners: your very own web server in less than a
 n hour for under 50€ - Laura Olivia Felder
URL:https://pretalx.c3voc.de/qtcat-2026/talk/X8JHS9/
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