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Dates

Victor Martinez-Luaces: Visualizing roots of complex functions using sibling curves

Location: Die Veranstaltung wird via WebEx durchgeführt. Die Zugangsdaten werden noch bekannt gegeben.

Jun 16, 2020 | 04:00 PM

Serkan Emek: Iterated Robin problem for the higher order Poisson equation

Location: Die Veranstaltung wird via WebEx durchgeführt. Die Zugangsdaten werden noch bekannt gegeben.

Jun 23, 2020 | 04:00 PM
Feb 11, 2020 | 04:15 PM
Nov 05, 2019 | 04:15 PM

Oliver Labs: Cubic Surface Models and their Historical and Mathematical Background

In the 19 th century, cubic surfaces - defined by an implicit equation of degree three in three variables - were among the first interesting examples in the development of modern algebraic geometry. A well-known result by Arthur Cayley and George Salmon is that any smooth cubic contains exactly 27 straight lines. Other prominent facts are the classification of all cubic surfaces w.r.t. their singularities by Ludwig Schläfli, and Alfred Clebsch's birational map between the plane and such surfaces where six points play an essential role. The talk will present both the historical and the mathematical background of classical hand-crafted and also recent 3d-printed cubic surface models. Some of their fascinating features such as the movement of the straight lines as the surfaces vary may very well be visualized using interactive software. In 2011 and 2014, the speaker created two versions of a complete series of more than 45 types of 3d-printed cubic surface models. Copies of these are now part of several university collections such as those at Lisbon, Strasbourg, Dresden, and Mainz, as well as at the IHP at Paris. He will bring some examples of these sculptures with him in order to illustrate facts which may better be appreciated when seeing and touching a real object.

Location: HS 001/Arnimallee 3 (Tea/coffee will be served from 16:45 in room 006/A3.)

Jan 31, 2019 | 05:15 PM

Frank Neumann: Hochschild cohomology of dg-categories and spectral sequences

Location: SR 007/008, Arnimallee 6 (Tee/coffee will be served from 15:45 in room 006/A3)

Jul 18, 2018 | 04:15 PM

Yorck Sommerhäuser: Hopf Algebras - A short introduction

Location: HS 001/A3 (Tee/coffee will be served from 15:45 in room 006/A3).

Jul 03, 2018 | 04:15 PM

Bernd Kreussler: Means, Braids and Triangle Equations

Location: HS 001, A3 (Tea & coffee will be served from 4:45 pm in room 006, A3)

Jun 28, 2018 | 05:15 PM
May 08, 2018 | 04:15 PM
Oct 15, 2014 | 04:15 PM
Jul 09, 2014 | 04:15 PM
Jun 25, 2014 | 04:15 PM

Victoria Hoskins: Anodyne extensions II

Location: SR 005, Arnimallee 3

Jun 18, 2014 | 04:15 PM

Joana Cirici: Anodyne extensions

Location: SR 005, Arnimallee 3

Jun 11, 2014 | 04:15 PM

Ángel Muñoz Castañeda: Excision for Picard groups and Karoubi-Villamayor K-theory

Abstract: We continue from last week by defining K_0 and K_1-regularity of a ring and prove that a regular ring is K_0 and K_1-regular. We show that distinguished squares of schemes give rise to an exact sequence relating their Picard groups and prove that K_0-regularity implies Pic-regularity. Then we define the Karoubi-Villamayor K-theory groups of a ring and relate these to the K_0 and K_1 groups. Further details: http://userpage.fu-berlin.de/hoskins/seminar.html [userpage.fu-berlin.de]

Location: Arnimalle 3, SR005

Jun 04, 2014 | 04:15 PM
May 28, 2014 | 04:00 PM
May 21, 2014 | 04:00 PM
May 14, 2014 | 04:00 PM
May 07, 2014 | 04:00 PM
Apr 30, 2014 | 04:00 PM
Apr 23, 2014 | 04:00 PM
Apr 16, 2014 | 04:15 PM

Anna Wißdorf: The theorem of Mehta-Ramanathan

Location: Arnimallee 6, SR 025/026

Feb 12, 2014 | 04:15 PM

Nikolai Beck: Wonderful compactifications

Location: Arnimallee 6, SR 025/026

Feb 05, 2014 | 04:15 PM
Jan 22, 2014 | 04:15 PM

Nikolai Beck: The gauge theoretic moduli space 

Location: Arnimallee 6, SR 025/026

Dec 11, 2013 | 04:00 PM c.t.

Joana Cirici: Hitchin's Existence Theorem

Location: Arnimallee 6, SR 025/026

Dec 04, 2013 | 04:00 PM c.t.

Ángel Muñoz: Stability of Hitchin pairs 

Location: Arnimallee 6, SR 025/026

Nov 27, 2013 | 04:00 PM c.t.

Joana Cirici: Uhlenbeck’s Compactness Theorem

Location: Arnimallee 6, SR 025/026

Nov 20, 2013 | 04:00 PM c.t.
Nov 13, 2013 | 04:15 PM
Nov 06, 2013 | 04:00 PM c.t.

Ángel Muñoz: Hitchin’s self-duality equations 

Location: Arnimallee 6, SR 025/026

Oct 30, 2013 | 04:00 PM c.t.

Arijit Dey: Bundles on toric varieties

Location: Arnimallee 6, SR 025/026

Oct 23, 2013 | 04:15 PM
Oct 16, 2013 | 04:00 PM c.t.
Jul 10, 2013 | 04:00 PM c.t.

Nikolai Beck: Gauge theory of fiber bundles

Location: SR 005, Arnimallee 3

Jun 19, 2013 | 04:00 PM c.t. - 06:00 PM
Jun 12, 2013 | 04:00 PM c.t. - 06:00 PM
Jun 05, 2013 | 04:00 PM c.t. - 06:00 PM
May 29, 2013 | 04:00 PM c.t. - 06:00 PM

Daniela Prata (Campinas, Brazil)

Location: SR 005, Arnimallee 3

May 24, 2013 | 11:00 AM - 01:00 PM

Simone Marchesi (Campinas Brazil)

Location: SR 130, Arnimallee 3, Hinterhaus

May 23, 2013 | 11:00 AM - 01:00 PM
May 15, 2013 | 04:00 PM c.t. - 06:00 PM
May 08, 2013 | 04:00 PM c.t. - 06:00 PM
Apr 24, 2013 | 04:00 PM c.t. - 06:00 PM
Apr 17, 2013 | 04:00 PM c.t. - 06:00 PM

Anna Wißdorf: Symplectic and Orthogonal Instantons

Location: SR 025/026, Arnimallee 6

Feb 06, 2013 | 04:00 PM c.t. - 06:00 PM
Jan 23, 2013 | 04:00 PM c.t. - 06:00 PM
Jan 09, 2013 | 04:00 PM c.t. - 06:00 PM
Dec 19, 2012 | 04:00 PM c.t. - 06:00 PM
Dec 05, 2012 | 04:15 PM - 06:00 PM

Elena Martinengo: The Penrose Transformation

Location: Arnimallee 6, SR 025/026

Nov 28, 2012 | 04:15 PM - 06:00 PM
Nov 21, 2012 | 04:00 PM c.t. - 06:00 PM
Nov 14, 2012 | 04:00 PM - 04:45 PM