CACAAG (Combinatorial Aspects of Commutative Algebra and Algebraic
Geometry) seminar
Speaker: Dr. Ashwin Deopurkar, TIFR Mumbai
Date & Time: 22nd January, 2018, 2-3:15pm
Venue: Ramanujan Hall
Title: Picard group of Tropical curves
Abstract: I'd prove that the Picard group of a tropical curve of genus g
is a real torus of dimension g.
Time:
11:30am-1:00pm
Location:
Room No. 215, Department of Mathematics
Description:
Commutative algebra seminar
Tuesday, 23 Jan
Venue: Room 215
Time: 11.30 am-1.00 pm.
Speaker: JK Verma
Title: Minkowski inequality for multiplicity
Abstract: We will present basic facts about the analytic spread of an
ideal and
then present the Rees-Sharp proof of Teissier's conjecture for 2-dimensional
local rings.
Time:
2:30pm
Location:
Ramanujan Hall, Department of Mathematics
Description:
Title: Emmy Noether (1882-1935), the Noether School and the Change of
Mathematical
Thinking:
About “modernization” and “algebraization”.
Abstract: attached.
Date & Time: 24 January 2018, 2:30pm
Venue: Ramanujan Hall
Time:
4:00pm
Location:
Ramanujan Hall, Department of Mathematics
Description:
Mathematics Colloquium
Speaker: Prof. Peter Beelen, Technical University of Denmark
Title: A new family of maximal curves.
Day, Date and Time: Wednesday, 24th January 2018, 4 PM
Venue: Ramanujan Hall
Abstract:
Let C be an algebraic curve defined over a finite field with q elements. The
Hasse-Weil bound gives an upper bound on the number of rational points on
C. An
algebraic curve is called maximal if this upper bound is attained.
On of the most important examples of a maximal curve is the Hermitian
curve, which
can be defined by the equation x^q+x=y^(q+1) over the field GF(q^2) with q^2
elements. It has genus q(q-1)/2 and it is not hard to show that any
maximal curve
over GF(q^2) has genus at most q(q-1)/2. One of the main open problems in
this area
is to classify (the genera of) all maximal curves for a given finite field
GF(q^2).
In a recent work together with Maria Montanucci, a new family of maximal
curves was
discovered. In this talk I will give an introduction to the topic as well
as present
this new family of curves.
Time:
10:30am
Location:
Room No. 215, Department of Mathematics
Description:
Topology Seminar
Date and Time: Wednesday 24th January 2018, at 2PM
Venue: Room 215
Speaker: Samik Basu (IACS)
Title : Equivariant cell complexes and freeness theorems
Abstract : We discuss analogues of the theorem "A CW complex with even
dimensional
cells has free homology" for G-spaces. For the cyclic group of order p, the
"freeness theorem" was first proved by Lewis, and subsequently the result was
improved by Ferland -Lewis. We generalize this result to other cyclic
groups (in
joint work with Surojit Ghosh).
Time:
3:00pm-4:00pm
Location:
Ramanujan Hall, Department of Mathematics
Description:
Speaker: Prof. Laurence Grammont, ICJ, University of Lyon, Saint Etienne,
France
Title: Generalisation of the Kimeldorf-Wahba correspondence for
constrained interpolation
Abstract: attached
Day and Date: Thursday, 25th January 2018
Time: 15:00-16:00
Venue: Ramanujan Hall, Department of Mathematics
Time:
4:00pm
Location:
Ramanujan Hall, Department of Mathematics
Description:
Speaker: Jean-Pierre Raymond.
Affiliation: Institute of Mathematics, Paul Sabatier
University,Toulouse,France.