Last updated (July 2017) total count: 119

* = scheduled

### 2017

- Nov Indianapolis, IN.Invertible Topological Field Theories (IU/PU/IUPUI Joint Topology Seminar)
- Oct Columbus, OH.The structure of tensor categories via 3-dimensional topology (quantum algebra/quantum topology seminar)
- Aug. South Bend. 2-Dimensional Topological Field Theories and Commutative Frobenius Algebra. RTG Geometry/Topology summer workshop for undergraduates
- June Regensburg, Germany. Parallels between transchromatic character theory and QFT dimensional reduction (transchromatic homotopy theory conference)
- May Chicago, IL. The structure of tensor categories via 3-dimensional topology (University of Chicago Topology Seminar)
- April South Bend, IN. The algebraic K-theory of manifolds via manifolds (Notre Dame Topology Seminar)
- March Berkeley, CA. Extended topological field theories in low dimensions (UC Berkeley Topology seminar)
- March Berkeley, CA. Pontryagin-Thom as a bridge from homotopy to (higher) categories (UC Berkeley Topology pre-seminar)

### 2016 (10 talks)

- Sept. South Bend. Tori detect invertible topological Field Theories.
- Sept. Lafayette, Indiana. Tori detect invertible topological field theories (Midwest Topology Seminar at Purdue)
- May-June Bonn, Germany. The Cobordism Hypothesis (4 lectures as part of a seminar series).
- May Oberwolfach, Germany. Extensions of Bordism Categories.
- May Athens, GA, USA. From 2-Morse functions to presentations (Georgia Topology Conference on Parameterized Morse Theory)
- March Bonn, Germany. Higher Categorical Structures from 3D Topological Field Theories (Closing conference for semester on Higher Structures)
- Jan. South Bend, IN, USA. Topological Field Theories (Colloquium Talk)

### 2015 (7 talks)

- Nov. Paris, France. Non-semisimple extended topological field theories (Paris 7)
- Oct. Oxford, England. Extended topological field theory in dimension three. (Clay workshop, Manifolds Unlocking Higher Structures)
- July Aarhus, Denmark. Extended topological field theory in dimension three (New developments in TQFT)
- July Bonn, Germany. Extended 3-dimensional topological field theories (Special Oberseminar)
- June Porto, Portugal. Extended 3-dimensional topological field theories (AMS-EMS-SPM)
- June Bonn, Germany. Extended 3-dimensional topological field theories (Workshop on homotopy theory, manifolds, and field theories).
- March. Oberwolfach (Subfactors and Conformal Field Theory)

### 2014 (12 talks)

- Nov. Oxford, England. Extended 3-dimensional topological field theories. (Topology Colloquium)
- Oct. Geneva. Extended 3D TQFTs. (Higher Structures 2014)
- Sept. Oberwolfach, Germany. Rational Homotopy Theory via Quantum Field Theory (Topologie)
- May. Cambridge, England. Classifying 3-dimensional TQFTs via generators and relations (Geometry and Topology seminar)
- April. MSRI Berkeley, CA. TBD (Reimagining the foundations of algebraic topology).
- March. BIRS Banff, Canada. From Higher Morse Theory to the cobordism hypothesis (Parameterized Morse Theory in Low-Dimensional and Symplectic Topology (14w5119))
- March. Erlangen, Germany. Structures on tensor categories inspired by local topological field theory (Structures on Tensor Categories and Topological Field Theories, Lecture Series 6 hours, 6 lectures).
- Feb. ESI Vienna, Austria. Extended Topological Field Theories and Tensor Categories (Modern Trends in Topological Field Theories)

### 2013 (8 talks)

- Dec. Luxembourg. String connections and torsion (Higher Lie Theory).
- April. Osnabrueck, Germany. The structure of fusion tensor categories via topological

field theory. NRW-Topology - Mar. Bad Boll, Germany. The structure of tensor categories from 3-dimensional topology (Plenary Lecture, Annual meeting of DFG priority program (SPP 1388) in representation theory)
- Jan. Hamburg, Germany. The structure of tensor categories from 3-dimensional topology. (Colloquium Talk).
- Jan. Hamburg, Germany. Dualizability in Low-Dimensional Higher Category Theory (Lecture series 6 hours, 4 lectures)

### 2012 (15 talks)

- Dec. Nijmegen, The Netherlands. The structure of tensor categories via 3D topological field theories and topology. (Higher structures on the lower Rhine II).
- Nov. Bonn, Germany. On the Unicity of the Homotopy Theory of Higher Categories. (Uni Bonn topology colloquium)
- Sept. Oberwolfach, Germany. The Structure of Tensor Categories via Local Topological Field Theories and Higher Categories. (Topologie)
- Aug. Bochum, Germany. A Finite Dimensional Model of the String Group (Strings and Automorphic Forms in Topology)
- July. Luminy, France. On the Uniqueness of the Homotopy Theory of Higher Categories. (CATS4 conference)
- June. Notre Dame University. On the Uniqueness of the Homotopy Theory of Higher Categories. (Thematic program on topology and field theories).
- May. Notre Dame University. Dualizability in Low-Dimensional Higher Category Theory (Mini Course (4 lectures)). (Thematic program on topology and field theories).
- May. Wesleyan (Topology Seminar). The Structure of fusion categories.
- March. Notre Dame University (Topology Seminar). On the Uniqueness of the Homotopy Theory of Higher Categories
- March. U. Chicago (Topology Seminar). On the Uniqueness of the Homotopy Theory of Higher Categories
- March. Northwestern (Topology Seminar). On the Uniqueness of the Homotopy Theory of Higher Categories
- Jan. Joint Mathematics Meetings (Boston). On the Uniqueness of the Homotopy Theory of Higher Categories

### 2011 (21 talks)

- Dec. Harvard University, Conformal Net Seminar). Invertible Conformal Nets
- Nov. Yale (Algebraic Geometry Seminar). 3-Dimensional Dualizability and the Structure of Fusion Categories
- Nov. Harvard University (Conformal Net Seminar). The Free Fermion Net
- Nov. Mills College, The M\”obius Band (Mills College Math Club Student Chapter of the AWM). Tic-Tac-Toe on a Torus! (Undergraduate seminar)
- Nov. UC Berkeley (Topology, Geometry, and Operator Algebras Seminar). The uniqueness of the homotopy theory of higher categories
- Nov. Stanford (Topology Seminar). The Structure of Fusion Categories via Local Topological Field Theories
- Oct. MIT (Topology Seminar). On the Uniqueness of the Homotopy Theory of Higher Categories
- July. MIT (QFT Seminar). Turaev-Viro TQFTs via planar algebras
- June. Ruhr-Universit\”at, Bochum (Topology Seminar). Extensions of 2-Groups and a Finite Dimensional String Group
- June. University of Copenhagen (Topology Seminar). The Structure of Fusion Categories via Topological Quantum Field Theories
- May. Hamburg, Germany, Higher Structures in Topology and Geometry V. The Structure of Fusion Categories via Topological Quantum Field Theories
- April. University of Pensilvania (Deformation Theory Seminar). The Structure of Fusion Categories via Topological Quantum Field Theories
- April. Columbia University (Symplectic Geometry, Gauge Theory, and Categorification Seminar). The Structure of Fusion Categories via Topological Quantum Field Theories
- April. Notre Dame, Colloquium. The Structure of Fusion Categories via Topological Quantum Field Theories
- April. Chicago, Midwest Topology Seminar. Dualizability and Locality in 3D Topological Field Theory
- Feb. Lisbon, Portugal, Workshop and School on Higher Gauge Theory, TQFT and Quantum Gravity. Two-Dimensional Extended Topological Field Theories (6 hours Mini-course lectures)
- Jan. UT Austin (GADGET). The space of framed Morse functions is contractible, after S. Galatius
- Jan. UT Austin (Geometry Seminar).Dualizability and Locality in 3D Topological Field Theory

### 2010 (6 talks)

- Nov. MIT (Geometry and Topology Seminar). Classifying Extended Topological Field Theories in Low Dimensions
- Sept. MIT (Topology Seminar). Dualizability and Locality in 3D Topological Field Theory
- May. MIT (Baby Topology Seminar). 2-Groups and 2-Group Cohomology
- March. Notre Dame (Topology Seminar). Homological Algebra for Bicategories (with applications to the String Group)
- March. U. Illinois Urbana-Champaign (Mathematical Physics Seminar). Classifying Local Topological Field Theories in Low Dimensions
- Jan. Berkeley, Topology and Quantization (FRG). Homological Algebra in Dimension Two (With Applications to the String Group)

### 2009 (13 talks)

- Dec. Boston University (Geometry Seminar). Classifying Local Topological Field Theories in Low Dimensions
- Nov. MIT (Juvi-Topology Seminar). Topological Cyclic Homology and Friends
- Oct. Northwestern (Geometry and Physics Seminar). Classifying Local Topological Field Theories in Low Dimensions
- Sept. MIT (Topology Seminar). Extensions of 2-Groups and a Finite Dimensional String Group
- Sept. Harvard, Topology and Quantization (FRG). Classifying Local Topological Field Theories in Low Dimensions)
- July. Georg-August Universit\”at, G\”ottingen. A Finite Dimensional String Group and Extensions of Topological 2-Groups
- July. Max-Planck Institute for Mathematics (Algebra, Geometry and Physics Seminar). Classifying Local Topological Field Theories in Low Dimensions
- June. Oberwolfach, Strings, Fields, and Topoogy. D-Branes, Defects, and Natural Transformations of Topological Field Theories
- May. UC Berkeley. D-Branes, Defects and Natural Transformations of Topological Field Theories
- April. Notre Dame (Topology Seminar) Classifying Extended Topological Field Theories in Low Dimensions
- April. UC Berkeley. Classifying Extended Topological Field Theories in Low Dimensions
- Feb. UC Berkeley (Hot Topics Seminar). Complete Segal Spaces and $(\infty, n)$-Categories after Jacob Lurie (2 Talks)

### 2008 (6 talks)

- Dec. UC Berkeley (Subfactor Seminar). An Introduction to TQFTs via Planar Algebras
- Sept-Oct. UC Berkeley. A Finite Dimensional String Group (3 lectures)
- Sept. UC Berkeley. Topological Group Cohomology
- June. Hausdorff Research Institute, Bonn (Special Seminar). Classification of Extended 2D TQFTs

### 2007 (9 talks)

- Nov. UC Berkeley. Functors for Bicategories
- Oct. UC Berkeley (Hot Topics Seminar). $A_\infty$-Categories and TCFTs.
- Oct. Notre Dame (Topology Seminar). Two-Dimensional Topological Quantum Field Theories
- Oct. UC Berkeley. Bicategories
- Sept. UC Berkeley. Two-Dimensional Topological Quantum Field Theories
- Aug. Kahului, Subfactors in Maui. What is an n-Category?
- April. Oberwolfach, Arbeitsgemeinschaft: Algebraic Structures in Conformal Field Theory. Subfactors and TQFTs
- March. UC Berkeley (Subfactors Seminar). Subfactors and 2+1 TQFTs
- Feb. UC Berkeley (Topology Seminar). What is an $N$-Category?

### 2006 (total up to this point = 7 talks)

- Nov. UC Berkeley. Spectral Schemes and Spectral Stacks
- Feb. UC Berkeley. The Classification of Holonomy Groups (2 Lectures)

### 2005

- Nov. UC Berkeley. Examples of CFTs via Lattices
- Oct. UC Berkeley. Conformal Field Theory

### 2004

- Oct. UC Berkeley. Calibrated Geometry and Spinors

### 2001

- Nov. San Diego, Joint Meetings. Examples of Cayley Manifolds in $\mathbb{R}^8$ (as an undergraduate)