Geometry, Topology and Dynamics Seminar

The seminar aims to introduce research topics in geometry, topology and dynamics and its interactions with other sciences on a simple level. Some topics are discussed over a two ot three-week period led by the same speaker (as a mini-course). Anyone interested in mathematics is welcome to attend.

Winter 2019

The seminar will meet regularly on Wednesday and occasiionally on another day of the week. The time and location is 16:00-17:00 at Lab 3, B700 unless otherwise noted. 

Date Speaker Title
16 January Hirofumi Sasahira (Kyushu University) The Seiberg-Witten equations and topology
23 January David Gabai (Princeton University) The General 4 dimensional Light Bulb Theorem
24 January (Thursday) Tadayuki Watanabe (Shimane University) Some exotic nontrivial elements of the rational homotopy groups of Diff(S^4)
29 January (Tuesday 15:00-16:00) Brian Seguin (Loyola University Chicago) TBA
30 January Shinpei Baba (Osaka University) TBA
6 -13 February   No seminar
18 February (Monday) tentatively Harrison Chapman (Colorado State University) TBA
20 February Jennifer Schultens (UC Davis) TBA
21 February (Thursday) Michael Kapovich (UC Davis) TBA
25 February (Monday) Dan Romik (UC Davis) TBA
27 February Brandy Doleshal (Sam Houston State University) TBA
6-13 March   No seminar
20 March tentatively Ben Burton (University of Queensland) TBA
21 March (Thursday) tentatively Stephan Tilman (University of Sydney) TBA
26 March (Tuesday) Hinke Osinga (University of Auckland) TBA
27 March Bernd Krauskopf (University of Auckland) TBA

 

Fall 2018

The seminar will meet at 4:00 pm on Wednesday at Lab 3, B700 unless otherwise noted. 

Date Speaker Title
2 October (Tuesday, 11:00-12:00, Lab 3 B717) Makoto Narita (Okinawa National College of Technology) Spacetime Singularities -An Introduction-
24 October Kenta Hayano (Keio University)  On Diagrams of Simplified Trisections and Mapping Class Groups
31 October Osamu Saeki (Kyushu University) Unlinking singular locus from regular fibers and its application to submersions
7 November Kazuto Takao (Kyoto University) Morse functions and singularities of product maps
8 November (Thursday, 3-4 pm, unit space B662 in Lab 2) Shinobu Hikami (OIST) Topological gravity and intersection theory followed by math/math physcis tea (open to all)
14 November John Loftin (Rutgers University, Newark) Neck pinch singularities in the geometry of surfaces
5 December Scott Carter (University of South Alabama) Ribbon and string representations of finite subgroups of SU(2)

 

Summer 2018

The seminar will meet at 3:00 pm on Wednesday at Lab 3, B700 unless otherwise noted. 

Date Speaker Title (click for abstract)
 9  May

Linling Ru (OIST)

Motoko Kato (Tokyo University)

(1) A suspension flow with a Plykin attractor

(2) On groups whose actions on finite-dimensional CAT(0) spaces have global fixed points

(Lab2, B662)

21 May Jessica Purcell (Monash University) Cusp shape and tunnel number (part 1
22 May Jessica Purcell (Monash University) Cusp shape and tunnel number (part 2)
23 May Jessica Purcell (Monash University) Cusps and alternating knots

24 May

Joel Hass (UC Davis)

Comparing shapes of genus zero [public lecture, no topology background expected]

(4-5pm, Room B250)

30 May

Anastasiia Tsvietkova (OIST)

The number of surfaces of fixed genus in a link complement

6   June Josh Howie (Monash University) Coiled Surfaces And The Slope Conjectures
13 June-August 1   Conferences/Research Travel/Summer Break
1 August, (Thursday) Dale Koenig (OIST) Computational complexity and knot theory
9 August (Thursday) Robert Tang (OIST) Solving word problems in finitely presented groups
16 August (Thursday) Tirasan Khandhawit (OIST) Stable Homotopy and Differential Topology

 

Spring 2018

Date Speaker Title (click for abstract)
10 January  Dale Koenig (OIST) A hands on introduction to Morse theory and handle decompositions
17 January  Gudrun Szewieczek (TU Wien/Kobe) Conformally flat hypersurfaces and Guichard nets 
24 January  Dale Koenig (OIST) Heegaard splittings and an introduction to 3-manifold theory
31 January  Dale Koenig (OIST)  Trisections of 4-manifolds
 7  February   Luca Lussardi (Politecnico di Torino) The Kirchhoff-Plateau problem
14 February   Linling Ru (OIST)  An introduction to uniformly hyperbolic attractors
21 February  Linling Ru (OIST)  Plykin attractor on the plane
28 February    No seminar 
  7 March Tirasan Khandhawit (OIST) Gauge theory and topology of manifolds
14 March Mini-symposium (12-14 March) Computational Problems in Low-dimensional Topology
21 March    No seminar (National holiday)
28 March Tirasan Khandhawit (OIST) Introduction to Seiberg-Witten invariant
4   April Yasha Neiman (OIST) Geometric Algebras: from the wedge produce to higher-spin Holography
11 April Dale Koenig (OIST) 3-manifolds in trisections
18 April Johannes Schönke (OIST) Möbius Kaleidocycles --- A New Family of Ring Mechanisms