## Visiting address

Ullevål StadionSognsveien 77B

0855 OSLO

Norway

Time and place:
Oct. 26, 2017 2:15 PM - 4:00 PM,
Ullevål

Time and place:
Oct. 19, 2017 2:15 PM - 4:00 PM,
Ullevål

Time and place:
Oct. 12, 2017 2:15 PM - 4:00 PM,
Ullevål

Time and place:
Sep. 27, 2017 2:15 PM - 4:00 PM,
B638, NH Abels hus

Time and place:
Sep. 21, 2017 2:15 PM - 4:00 PM,
B638, NH Abels hus

Time and place:
Apr. 27, 2017 10:00 AM -
Apr. 28, 2017 2:00 PM,
Niels Henrik Abels building

The second Scandinavian Gathering Around Remarkable Discrete Mathematics

Time and place:
Apr. 6, 2017 2:15 PM - 4:00 PM,
B638, NH Abels hus

Time and place:
Mar. 23, 2017 3:00 PM - 4:00 PM,
B638, NH Abels hus

Time and place:
Mar. 16, 2017 2:15 PM - 4:00 PM,
B638, NH Abels hus

Time and place:
Feb. 16, 2017 2:15 PM - 4:00 PM,
B638, NH Abels hus

Time and place:
Feb. 9, 2017 2:15 PM - 4:00 PM,
B638, NH Abels hus

Time and place:
Jan. 26, 2017 11:00 AM -
Jan. 28, 2017 3:00 PM,
University of Oslo

A conference celebrating the work of Ragni Piene on the occasion of her 70th birthday.

Time and place:
Nov. 24, 2016 2:15 PM - 4:00 PM,
B638, NH Abels hus

Time and place:
Nov. 10, 2016 2:15 PM - 4:00 PM,
B638, NH Abels hus

Time and place:
Oct. 27, 2016 2:15 PM - 4:00 PM,
B638, NH Abels hus

Time and place:
Oct. 20, 2016 2:15 PM - 4:00 PM,
B638, NH Abels hus

Time and place:
Sep. 22, 2016 2:15 PM - 4:00 PM,
B638, NH Abels hus

Yuan Wang (Utah), gives the Seminar in Algebra and Algebraic Geometry:

*"On the characterization of abelian varieties for log pairs in zero and positive characteristic"*

Time and place:
Sep. 15, 2016 2:15 PM - 4:00 PM,
B638, NH Abels hus

Francesco Galuppi (UiO/Ferrara) gives the algebraic geometry seminar:

"Identifiability of polynomials and Cremona transformations."

Time and place:
Sep. 8, 2016 2:15 PM - 4:00 PM,
B738, NH Abels hus

Seckin Adali (UiO), gives the Seminar in Algebra and Algebraic Geometry:

Singularities of Restriction Varieties in OG(k,n)

Time and place:
Sep. 1, 2016 2:15 PM - 4:00 PM,
B638, NH Abels hus

Kristian Ranestad (UiO), gives the Seminar in Algebra and Algebraic Geometry:

*"Kummer surfaces and hyperkähler fourfolds, as degeneracy loci"*

Time and place:
June 9, 2016 2:15 PM - 4:00 PM,
B738, NH Abels hus

Ritwik Mukherjee (TIFR) gives the Seminar in Algebra and Algebraic Geometry:

**Title: **Enumerative Geometry of singular curves in a Linear System

**Abstract:** Enumerative geometry is a branch of mathematics that deals with the following question: "How many geometric objects satisfy certain constraints". A well known class of enumerative question is to count curves in a linear system H^0(X,L) that have some prescribed singularities. In this talk we will describe a topological method to approach this problem. We will express the enumerative numbers as the Euler class of an appropriate bundle. We will then go on to explain how we compute the degenerate contribution of the Euler class using a topological method.

Time and place:
May 26, 2016 2:15 PM - 4:00 PM,
B738, NH Abels hus

John Christian Ottem, UiO, gives the Seminar in Algebra and Algebraic Geometry:

Title: Moduli of K3s via Global Torelli

Abstract: I'll give a brief account of the Torelli theorems and the construction of the moduli space of K3 surfaces

Time and place:
May 19, 2016 2:15 PM - 4:00 PM,
B738, NH Abels hus

Alessandro Oneto (Stockholm) gives the Seminar in Algebra and Algebraic Geometry:

**Ideals of points and Waring problems for polynomials**