August 5, 2024 - August 9, 2024
Public Access Category: All |
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- Time:
- 4:00pm
- Location:
- Ramanujan Hall, Department of Mathematics
- Description:
Statistics seminar
Title : A selected summary of extreme value theory for discrete random
variables.Time, Day & Date: 4:00 pm on 5th August 2024
Venue: Ramanujan Hall
Host: Radhendushka Srivastava
Speaker: Prof. Saralees Nadarajah, The University of Mancheste
- Time:
- 12:30pm
- Location:
- Room 215, Mathematics Department
- Description:
Commutative Algebra Seminar
Time, Day and Date : 12:30 pm on Tuesday 6 August
Venue : Room 215
Speaker : Tony J. Puthenpurakal
Title : K-theoretic techniques in local algebra
Abstract : We discuss some K-theoretic techniques to prove Serre's
Vanishing conjecture and the total rank conjecture
- Time:
- 4:00pm
- Location:
- Room 215, Mathematics Department
- Description:
Algebraic Groups Seminar.
Time, Day & Date: 4.00 pm, Tuesday, August 6, 2024.
Venue: Room 215.
Host: Dipendra Prasad.
Speaker: Akash Yadav.
Title: Nilpotent conjugacy classes
Abstract: We continue the analysis of nilpotent conjugacy classes from the
book of Collingwood and McGovern.
- Time:
- 11:30am
- Location:
- Ramanujan Hall, Department of Mathematics
- Description:
Combinatorics Seminar
Date/Day: 7th August, Wednesday.
Venue/Time: Ramanujan Hall, 11:30 am
Speaker: Dhruv Mubayi, University of Illinois at Chicago
Title: New results on the Erdos Rogers function
Abstract: Given integers 1 < s < t, what is the maximum size of a K_s-free
subgraph that every n vertex K_t-free graph is guaranteed to contain? This
problem was posed by Hajnal, Erdos and Rogers in the 1960s as a way to
generalize classical graph Ramsey numbers (which corresponds to the case
s=2). We prove almost optimal results in the case t=s+1 using recent
constructions in Ramsey theory. We also consider the problem where we
replace K_s and K_t by arbitrary graphs H and G and discover several
interesting new phenomena. This is joint work with Jacques Verstraete.
- Time:
- 4:00pm
- Location:
- Ramanujan Hall, Department of Mathematics
- Description:
Colloquium talk
Title : Billiards in Rational Prisms
Speaker : Jayadev Athreya, University of Washington
Time, Date and day : 7th August (Wed) at 4:00 pm
Venue : Ramanujan Hall
Host: Ravi Raghunathan
Abstract : This talk describes joint work-in-progress with Bedaride, Hooper,
and Hubert. Motivated by the study of billiards in polyhedra, we study
linear flows in a family of singular flat 3-manifolds which we call
translation prisms. Using ideas of Furstenberg and Veech, we connect
results about weak mixing properties of flows on translation surfaces to
ergodic properties of linear flows on translation prisms, and use this to
obtain several results about unique ergodicity of these prism flows.
Furthermore, we construct explicit eigenfunctions for translation flows in
psuedo-Anosov directions with Pisot expansion factors, and use this
construction to build explicit examples of non-ergodic prism flows, and
for
non-ergodic billiard flows in a right prism over a regular 7-gon.
- Time:
- 10:00am
- Location:
- Ramanujan Hall, Department of Mathematics
- Description:
Algebraic Groups Seminar.
Time, Day & Date: 10.00 am, Friday, August 9, 2024.
Venue: Ramanujan Hall.
Host: Shripad M. Garge.
Speaker: Dibyendu Biswas.
Title: Borel subgroups in reductive groups
Abstract: We continue studying Chapter 8 (Reductive Groups) of Springer's
book on Linear Algebraic Groups.