Workshop on
Bianchi and Siegel modular forms
Sheffield 14-16 July, 2014


Luigi Bianchi (1856-1928) and Carl Ludwig Siegel (1896-1981). Images courtesy of wikipedia.

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This event will take place in the Hicks Building at the University of Sheffield. All talks will be in room J11, breaks in the common room I15.


Here are the abstracts of the talks (version 17 June 2014).


Monday, 14 July 2014
10:00 Reception/coffee/tea in Common room I15
10:30 Haluk Şengün (Sheffield)
Cohomology of Bianchi Groups and Arithmetic
11:20 Q&A
11:30 Short break
11:35 Jolanta Marzec (Bristol)
Non-vanishing of fundamental Fourier coefficients of Siegel modular forms
12:20 Q&A
12:30 Lunch
14:00 PhD students introductions
14:15 Short break
14:20 Abhishek Saha (Bristol)
Siegel modular forms of degree 2: Fourier coefficients, L-functions, and functoriality
15:10 Q&A
15:20 Short break
15:25 Thanasis Bouganis (Durham)
On special values of L-functions attached to half-integral weight Siegel modular forms
16:15 Q&A
16:25 Tea/coffee
16:55 Ameya Pitale (Oklahoma)
Local and global Maass relations
17:45 Q&A
19:00 Optional: Pub Dinner at University Arms

Tuesday, 15 July 2014
10:00 Neil Dummigan (Sheffield)
Langlands functoriality and Harder's conjecture
10:50 Q&A
11:00 Coffee/tea
11:30 Lynne Walling (Bristol)
Diagonalising spaces of Siegel Eisenstein series
12:20 Q&A
12:30 Lunch
14:10 Siegfried Böcherer (Mannheim)
Congruence primes via higher L-functions
15:00 Q&A
15:10 Short break
15:15 Alexander Rahm (Galway)
Bianchi modular forms of varying discriminant, level and weight
16:05 Q&A
16:15 Tea/coffee
16:45 Lassina Dembélé (Warwick)
Theta lifts of torsion classes of Bianchi groups
17:35 Q&A
17:45 Discussion session
19:30 Conference Dinner at Aagrah Leopold Square

Wednesday, 16 July 2014
9:30 Jim Brown (Clemson)
The Ikeda ideal and a conjecture of Katsurada
10:20 Q&A
10:30 Coffee/tea
11:00 Kris Klosin (CUNY)
Congruences and R=T theorems
11:50 Q&A
12:00 Short break
12:05 Jacques Tilouine (Paris)
Big Image of Galois representations and congruence ideals
12:55 Q&A
13:05 Lunch