__Polytopal realizations of non-crystallographic associahedra__----__3D Farey graph from ideal tetrahedra__----__Geometries__----__Ptolemy relation and Friends__----__Friezes for a pair of pants__----__Finite mutation type in presence of coefficients__----__Quiver mutations and triangulated surfaces__----__Essential hyperbolic Coxeter polytopes__----__Mutation of non-integer quivers: finite mutation type__----__Introduction to cluster algebras__----__Coxeter groups, quiver mutations and hyperbolic manifolds__----__Quiver mutations, reflection groups and curves on punctured disc__----__Hyperbolic Coxeter polytopes__----__4 minutes talk on Cluster algebras and Coxeter groups__----__Geometric realizations of quiver mutations__----__Bases for cluster algebras from orbifolds__----__Reflection subgroups of Coxeter groups__----__5 minutes talk on cluster algebras__----__Coxeter groups and cluster algebras__----__Double pants decompositions of 2-surfaces__----__Combinatorics of Coxeter polytopes__----__Hyperbolic Coxeter polytopes__----__Combinatorics of Coxeter polytopes: missing faces__----__Reflection subgroups of Coxeter groups__----__Cluster Algebras and Coxeter Groups__----__Non-integer quivers: geometry and mutation-finiteness__----__My favorite proof of Ptolemy Theorem__---

| 2024, Sauthhampton, Pure Math Colloquium. |

| 2024, "Cluster algebras and its applications", Oberwolfach workshop. |

| 2023, talk for high school students, "Maths Unbounded", Durham. |

| 2023, Seminar "Graphs on surfaces and curves over number fields", online. |

| 2021, "Selected Topics in Mathematics", Online Edition. |

| 2021, Isaac Newton Institute, "Interdisciplinary applications of cluster algebras" (slides corrected). |

| 2021, LMS Undergraduate Summer School, Colloquium (online). |

| 2020, AIM workshop on Arithmetic Reflection Groups and Crystallographic Packings. |

| 2020, ICMS, Integrable Days, 65th birthday celebration for Alexander P. Veselov. |

| 2018, London, LMS Graduate Student Meeting. |

| 2018, Leicester, Workshop on Galois Covers, Grothendieck-Teichmüller Theory and Dessins d’Enfants. |

| 2018, Luminy, CIRM, Cluster Algebras: Twenty Years On. |

| 2017, CRM, Montreal. |

| 2016. |

| 2016, Hesrtmonceux Castle, Conference on Groups Actions and Algebraic Combinatorics. |

| 2014, Moscow, 4th Workshop on Combinatorics of Moduli Spaces, Cluster Algebras, and Symplectic Invariants. |

| 2013, Durham, Geometry and Topology seminar. |

| 2012, MSRI. |

| 2012, Durham (job inteview talk). |

| 2010, Moscow. 2nd Workshop on Combinatorics of Moduli Spaces, Cluster Algebras, and Symplectic Invariants. |

| 2009, EPFL. |

| 2008, Fribourg, 3-hour minicourse, Summer school on bounded cohomology, Coxeter groups and hyperbolic geometry. |

| 2007, CMS Winter Meeting. |

| 2007, Bielefeld. |

| 3 lectures in TU Berlin, 2017 |

| East Lancing, 2018 |

| Proof Without Words (borrowed from cut-the-knot portal). ---- |