# Gebhard Martin

Mathematisches Institut

Universität Bonn

Endenicher Allee 60

53115 Bonn

Tel.: +49 (0)228 73 62267

Mail: gmartin

Raum: 1.041

## Teaching

##### Summer 2024:

##### Winter 2023/24:

##### Summer 2023:

##### Winter 2022/23:

##### Summer 2022:

##### Winter 2021/22:

##### Summer 2021:

- Finite Group Schemes
- Algebraic Geometry 2 (Assistant)

##### Winter 2020/21:

- Algebraic Geometry 1 (Assistant)
- Grundzüge der Mathematik 1 (Assistant)

##### Summer 2019:

- Linear Algebra 2 (Assistant)

##### Winter 2018/19:

- Linear Algebra 1 (Assistant)

##### Summer 2018:

- Algebra 1 (Assistant)

## Articles and Preprints

- Nodal Enriques surfaces are Reye congruences (with G. Mezzedimi and D. Veniani), Accepted for publication in
**Journal für die reine und angewandte Mathematik (Crelle)**, 16 pages - Bounding geometrically integral del Pezzo surfaces (with F. Bernasconi), 26 pages
- Automorphisms of del Pezzo surfaces in odd characteristic (with I. Dolgachev), Accepted for publication in
**Journal of the London Mathematical Society**, 35 pages - Automorphisms of del Pezzo surfaces in characteristic 2 (with I. Dolgachev), Accepted for publication in
**Algebra & Number Theory**, 44 pages - RDP del Pezzo surfaces with global vector fields in odd characteristic (with C. Stadlmayr),

Accepted for publication in**Algebraic Geometry**, 33 pages - Enriques surfaces of non-degeneracy 3 (with G. Mezzedimi and D. Veniani), 24 pages
- On extra-special Enriques surfaces (with G. Mezzedimi and D. Veniani),

**Mathematische Annalen**Volume 387, Number 1-2, 133--143 - Torsors over the Rational Double Points in Characteristic p (with C. Liedtke and Y. Matsumoto), Accepted for publication in
**Astérisque**, 76 pages - Linearly Reductive Quotient Singularities (with C. Liedtke and Y. Matsumoto), Accepted for publication in
**Astérisque**, 51 pages - Automorphism groups of rational elliptic and quasi-elliptic surfaces in all characteristics (with I. Dolgachev),

**Advances in Mathematics**Volume 400, 14 May 2022, 108274 - Automorphism schemes of (quasi-)bielliptic surfaces ,

**Épijournal de Géométrie Algébrique**, Volume 6 (2022), Article no. 9 - Weak del Pezzo surfaces with global vector fields (with C. Stadlmayr),

Accepted for publication in**Geometry & Topology**, 50 pages - Infinitesimal automorphisms of algebraic varieties and vector fields on elliptic surfaces ,

**Algebra & Number Theory**Volume 16, Number 7 (2022), pp. 1655–-1704. - Automorphisms of unnodal Enriques surfaces, 22 pages
- Numerically trivial automorphisms of Enriques surfaces in characteristic 2 (with I. Dolgachev),

**J. Math. Soc. Japan**Volume 71, Number 4 (2019), 1181--1200. - Classification of Enriques surfaces with finite automorphism group in characteristic 2 (with T. Katsura and S. Kondo),

**Algebraic Geometry**Volume 7, Issue 4 (July 2020), 390--459. - Enriques surfaces with finite automorphism group in positive characteristic,

**Algebraic Geometry**Volume 6, Issue 5 (September 2019), 592--649.

## News

Jessica Fintzen wins Cole Prize

Dr. Regula Krapf receives university teaching award

Prof. Catharina Stroppel joined the North Rhine-Westphalia Academy for Sciences and Arts

Prof. Daniel Huybrechts receives the Compositio Prize for the periode 2017-2019

Prof. Catharina Stroppel receives Gottfried Wilhelm Leibniz Prize 2023

Grants for Mathematics students from Ukraine

Prof. Jessica Fintzen is awarded a Whitehead Prize of the London Mathematical Society

Prof. Peter Scholze elected as Foreign Member of the Royal Society