## Videos

**Maciej Borodzik, Heegaard Floer homologies and rational cuspidal curves** , lecture starts at 3:10

**Pierrette Cassou-Noguès, Polynomials in two variables and their tree at infinity, slides**

**Adrien Dubouloz, Koras-Russell threefolds: Geometry, Algebra, Topologies and beyond**

**Rajendra Gurjar, A new proof of C.P. Ramanujam’s characterization of the affine 2-space**

**Isac Hedén**, **Extensions of principal additive bundles over a punctured surface**

**Shulim Kaliman, Complete algebraic vector fields on affine surfaces, slides**

**Hideo Kojima, Normal log canonical del Pezzo surfaces of rank oneslides**

**Gene Freudenburg,**, lecture starts at 1:13:00

*The polar group of a real form of an affine C-variety*

**Frank Kutzschebauch, The Koras-Russell cubic threefold from the holomorphic point of view**

**Takashi Kishimoto, Forms of the quintic del Pezzo threefold V_{5}**

**Leonid Makar-Limanov, An estimate of the geometric degree of a two-dimensional Jacobian mapping**

**Masayoshi Miyanishi, Affine space fibrations on algebraic varieties, slides**,

**Zbigniew Jelonek, Simple examples of affine manifolds with infinitely many exotic modelsslides**

**Andryi Regeta,**, lecture starts at 1:13:00

*Automorphism groups of Danielewski surfaces*

**Lucy Moser Jauslin, A survey on automorphism groups of Koras-Russell threefolds** , lecture starts at 4:00.

**Karol Palka, On the number of cusps of rational cuspidal curves**

**Sabrina Pauli, A^{1}-contractibility of Koras-Russell like varieties**

**Tomasz Pełka, Classifying smooth Q-homology planes**, lecture starts at 2:10,

**slides**

**Alexander Perepechko, Nested automorphism groups**

**Pierre-Marie Poloni, On some affine plane bundles over the punctured affine plane** , lecture starts at 0:30

**Vladimir Popov, Cremona groups vs. algebraic groups**

**Peter Russell, C^{∗}-actions on C^{3} are linearizable: a somewhat historical overview of the proof and its ramifications,slides**

**Christian Urech, Characterization of toric surfaces by their automorphism groups**

**Mikhail Zaidenberg, Zariski cancellation problem for surfaces, slides**