## Activities

**Attended conferences and schools**

Summer School on SINGULAR and Applications, Kaiserslautern, Germany, 2007.
32nd Autumn School in Algebraic Geometry: Algebraic torus actions, Łukecin, Poland, September 2009.
32nd Symposium and 6th Japan-Vietnam Joint Seminar on Commutative Algebra, Hayama, Japan, December 2010.
Mini-Workshop on Commutative Algebra, Combinatorial & Projective Algebraic Geometry, KAIST, Daejeon, South Korea, September/October 2011.
National Conference on Algebra, Geometry and Topology “DAHITO 2011”, Thái Nguyên, Việt Nam, November 2011.
7th Japan-Vietnam Joint Seminar on Commutative Algebra, Quy Nhơn, Việt Nam, December 2011.
**Talks (since September 2010)**

*Introduction to toric geometry.* Working Seminar on Toric Geometry, Institute of Mathematics, Hà Nội, Viẹt Nam, September 2010.
*Toric schemes.* Series of three talks, Seminar of the Department of Algebra, Institute of Mathematics, Hà Nội, Viẹt Nam, September 2010.
*On toric schemes.* 32nd Symposium and 6th Japan-Vietnam Joint Seminar on Commutative Algebra, Hayama, Japan, December 2010. Picture
*Coarsening of graded local cohomology.* Seminar on Commutative Algebra, College of Science, Thai Nguyen University, Thái Nguyên, Viẹt Nam, January 2011 (invited).
*Linear representations of finite groups (Part II).* Working Seminar on Tate’s Thesis, Institute of Mathematics, Hà Nội, Việt Nam, March 2011.
*On the combinatorics of fans.* Mini-Workshop on Commutative Algebra, Combinatorial & Projective Algebraic Geometry, KAIST, Daejeon, South Korea, September/October 2011 (invited).
*On quasicoherent sheaves on toric schemes.* National Conference on Algebra, Geometry and Topology “DAHITO 2011”, Thái Nguyên, Việt Nam, November 2011. Slides Picture
*Bad behaviour of injective modules.* Seminar of the Department of Algebra, Institute of Mathematics, Hà Nội, Việt Nam, November 2011.
*On quasicoherent sheaves on toric schemes.* 7th Japan-Vietnam Joint Seminar on Commutative Algebra, Quy Nhơn, Việt Nam, December 2011. Slides Picture
*The geometry of toric schemes.* Arbeitsgemeinschaft Algebraische Geometrie, Universität Tübingen, Germany, May 2012.
*The yoga of coarsening.* Arbeitsgemeinschaft Algebraische Geometrie, Universität Tübingen, Germany, November 2012.
**Teaching**

Introduction to Homological Algebra. Course for the International Master Program (7 Lectures), Institute of Mathematics, Hà Nội, Việt Nam, December 2010-January 2011.
Homological Algebra. Lectures for master students (2 Lectures), College of Science, Thái Nguyên University, Thái Nguyên, Viẹt Nam, January 2011. Picture, Picture
Homologische Algebra. Spezialvorlesung (2h/week), Universität Tübingen, April-July 2012.
Schemata. Seminar (4h/week), Universität Tübingen, December 2012-February 2013.
**Teaching assistance at UZH (since September 2004)**

Zahlentheorie für Studierende der PHZH (Brodmann), Summer 2004.
Seminar Brodmann: Kommutative Algebra (Hilbertschemata), Winter 2004/05.
Algebra I (Brodmann), Winter 2004/05.
Kommutative Algebra (Brodmann), Summer 2005.
Lokale Kohomologietheorie (Brodmann), Winter 2005/06.
Seminar Brodmann: Kommutative Algebra, Summer 2006.
Kommutative Algebra (Brodmann), Summer 2006.
Seminar Brodmann: Kommutative Algebra, Winter 2006/07.
Seminar Brodmann: Kommutative Algebra, Spring 2007.
Homologische Algebra (Brodmann), Spring 2007.
Seminar Brodmann: Kommutative Algebra, Fall 2007.
Lineare Algebra I (Okonek), Fall 2007.
Seminar Brodmann: Kommutative Algebra (Spektralsequenzen), Spring 2008.
Lineare Algebra II (Okonek), Spring 2008.
Seminar Brodmann: Kommutative Algebra, Fall 2008.
Algebra I (Okonek), Fall 2008.
Seminar Galoistheorie und Anwendungen (Brodmann), Spring 2009.
Seminar Brodmann: Kommutative Algebra, Spring 2009.
**Other activities**

Referee for Southeast Asian Bulletin of Mathematics
Referee for Acta Mathematica Vietnamica
Referee for the PhD Thesis of T. N. An, Institute of Mathematics, Hà Nội (“Về đối đồng điều địa phương với giá cực đại và tính catenary của vành noether, địa phương”).
Participant at MathOverflow

Contributor to the amazing Stacks Project