One-day learning seminar on further related topics

Date: October 22, 2026
Location: Room 638, 6 Floor, Institute of Mathematics, Academia Sinica (Astro-Math building in NTU Campus)
Speakers: Masao Oi, Cheng-Chiang Tsai, Yuta Takaya (in this order)
Target Papers:

  1. [Feng] Feng, Modular functoriality in the local Langlands correspondence, arXiv: 2312.12542v4
  2. [Cotner] Cotner, Modular functoriality for finite groups, arXiv: 2609.17060
  3. [CF1] Cotner-Feng, Local Langlands functoriality for Yu's supercuspidals I Kaletha's parametrization, arXiv: 2609.16381v2
  4. [CF2] Cotner-Feng, Local Langlands functoriality for Yu's supercuspidals II Fargues--Scholze's parametrization, arXiv: 2609.16387v2
Pleliminaries (can be referred to without reviewing) :
  1. Deligne-Lusztig theory
  2. Yu's construction
  3. Kaletha's non-singular LLC (including DeBacker-Reeder)
  4. Fintzen-Kaletha-Spice twist
  5. Fargues-Scholze's LLC

Time Table

Time Oct. 22 (Thu)
9:45-10:45 [Feng] (Masao)
11:00-12:00 [Cotner] (Masao)
12:00-13:30 Lunch
13:30-14:30 [CF1] (Cheng-Chiang)
14:45-15:45 [CF2]-1 (Yuta)
16:00-17:00 [CF2]-2 (Yuta)