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UID:20251026T112828EDT-9638OCheCU@132.216.98.100
DTSTAMP:20251026T152828Z
DESCRIPTION:Title: Inverse curve problems for del Pezzo surfaces\n\nAbstrac
 t: The inverse Galois problem for del Pezzo surfaces asks\, over a given f
 ield\, which groups arise as the automorphism group of a del Pezzo surface
  over k. Over infinite fields\, this problem is still open for del Pezzos 
 of degree at most 4. I will talk about joint work with Enis Kaya\, Sam Str
 eeter\, and Happy Uppal\, in which we solve a weaker problem: which counts
  of lines and conic bundles occur on del Pezzo surfaces over k? Our soluti
 on is valid for any finite\, separably closed\, local\, Hilbertian\, or re
 al closed field\, and we conjecture that it should hold for arbitrary fiel
 ds. Time permitting\, I will discuss a few cases of the inverse Galois pro
 blem for del Pezzo surfaces that we solve en route to the inverse curve pr
 oblem.\n\nLocation: UQAM PK-5675\n
DTSTART:20251022T180000Z
DTEND:20251022T190000Z
SUMMARY:Stephen McKean (BYU)
URL:/mathstat/channels/event/stephen-mckean-byu-368447
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