## Talks from 2017

Here is a list of all talks given in 2017 at the Australian Category Seminar. Click on the title for an abstract, or on the speaker's name for other talks by that speaker.

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### 20 December 2017, Macquarie

- 2pm: Martin Markl – Distributive laws between the Three Graces
- 4pm: Gabriel Drummond-Cole – Model category structures for dg-coalgebras

### 6 December 2017, Macquarie

### 29 November 2017, Macquarie

- 2pm: Karol Szumilo – Internal Language of Higher Categories (part 2)
- 4pm: Philip Hackney – Triple adjoints and anti-involutions

### 22 November 2017, Macquarie

- 2pm: Richard Garner – (Co)localisation of one-dimensional model structures
- 4pm: Karol Szumilo – Internal Language of Higher Categories (part 1)

### 15 November 2017, Macquarie

- 2pm: Edoardo Lanari – On the Homotopy Theory of ∞-groupoids, part 3
- 4pm: Peter Johnstone – What is Modified Realizability?

### 8 November 2017, Macquarie

- 2pm: Geordie Williamson – Actions of Coxeter groups and their braid groups on (higher) categories
- 4pm: Bob Rosebrugh – Symmetric lenses, cospans and universality

### 1 November 2017, Macquarie

- 2pm: Peter Johnstone – The Wonderful World of Realizability, part 2
- 4pm: Alexander Campbell – Strictification of indexed bicategories

### 25 October 2017, Macquarie

- 2pm: Peter Johnstone – The Wonderful World of Realizability
- 4pm: Edoardo Lanari – On the Homotopy Theory of ∞-groupoids, part 2

### 18 October 2017, Macquarie

- 2pm: Richard Garner – A new and improved embedding theorem for tangent categories
- 4pm: Edoardo Lanari – On the Homotopy Theory of ∞-groupoids

### 11 October 2017, Macquarie

### 4 October 2017, Macquarie

- 2pm: Anthony Henderson – Towards character sheaves
- 4pm: John Bourke – Quillen model structures and low dimensional higher dimensional categories

### 27 September 2017, Macquarie

### 20 September 2017, Macquarie

- 2pm: Branko Nikolic – Lifting Cauchy modules through Hopf adjunctions in the setting of 2-sided enrichment
- 4pm: Scott Balchin – Augmented homotopical algebraic geometry, part 2

### 13 September 2017, Macquarie

- 2pm: Scott Balchin – Augmented homotopical algebraic geometry
- 4pm: Richard Garner – Monads and theories

### 6 September 2017, Macquarie

- 2pm: Zsuzsanna Dancso – Lattices and homological algebra
- 4pm: Marcy Robertson – An action of the Grothendieck-Teichmuller group on the operad of stable curves of genus zero

### 23 August 2017, Macquarie

- 2pm: John Bourke – Model structures on algebraically fibrant and cofibrant objects revisited
- 4pm: Philip Hackney – Flippy sets and dagger categories

### 16 August 2017, Macquarie

- 2pm: Eugenia Cheng – Doubly degenerate Trimble 3-categories and braided monoidal categories
- 4pm: Amnon Neeman – Recent developments in Grothendieck duality

### 9 August 2017, Macquarie

- 2pm: Ross Street – Raising Cauchy through a comonadic base change
- 4pm: Alexander Campbell – Skew-proactegories

### 2 August 2017, Macquarie

- 2pm: Richard Garner – Ultraproducts, ultraspans and ultracategories
- 4pm: Michael Batanin – Internal algebras classifiers of polynomial monads and homotopy pushouts

### 26 July 2017, Macquarie

- 2pm: Charles Walker – Distributive laws via admissibility
- 4pm: Emily Riehl – Homotopy coherent structures, redux

### 12 July 2017, Macquarie

### 5 July 2017, Macquarie

- 2pm: Ross Street – Cauchy completeness for DG-categories
- 4pm: Emily Riehl – Homotopy coherent structures

### 28 June 2017, Macquarie

- 2pm: Branko Nikolic – A commutative and cocommutative Hopf algebra in nature
- 4pm: Alexander Campbell – Enriched weak algebraic factorization systems (part 2)

### 21 June 2017, Macquarie

- 2pm: Alexander Campbell – Enriched weak algebraic factorization systems (part 1)
- 4pm: Philip Hackney – Higher properads (part 2)

### 7 June 2017, Macquarie

- 2pm: Oded Yacobi – Introduction to Categorical Representation Theory
- 4pm: Jun Yoshida – Graphical calculus in symmetric monoidal (infty-)categories with duals (part 2)

### 31 May 2017, Macquarie

- 2pm: Dmitri Nikshych – The Witt group of braided fusion categories
- 4pm: Emily Riehl – A synthetic theory of ∞-categories in homotopy type theory

### 24 May 2017, Macquarie

- 2pm: Ross Street – Quadratic forms as complete invariants for autonomous braided monoidal groupoids
- 4pm: Jun Yoshida – Graphical calculus in symmetric monoidal (infty-)categories with duals (part 1)

### 17 May 2017, Macquarie

- 2pm: Philip Hackney – Higher properads (part 1)
- 4pm: Steve Lack – Combinatorial models for associahedra

### 10 May 2017, Macquarie

### 3 May 2017, Macquarie

- 2pm: John Bourke – Skew multicategories
- 4pm: Florian De Leger – Mapping spaces and internal algebra classifiers

### 26 April 2017, Macquarie

- 2pm: Alexander Campbell – Skew categories, skew actegories
- 4pm: Hardy Hulley – The Giry monad as a codensity monad

### 19 April 2017, Macquarie

- 4pm: John Bourke – Equations, orthogonality and Birkhoff's theorem

### 12 April 2017, Macquarie

- 2pm: Diarmuid Crowley – Classifying manifolds: a categorical perspective
- 4pm: Charles Walker – Yoneda Structures and KZ Doctrines

### 29 March 2017, Macquarie

- 2pm: Michael Batanin – Quillen equivalences between categories of algebras
- 4pm: Alexander Campbell – How strict is strictification?

### 22 March 2017, Macquarie

- 2pm: John Bourke – Skew monoidal categories, colax monoidal categories and multicategories
- 4pm: Jonathan Beardsley – A Third Isomorphism Theorem for Thom Spectra and Hopf-Galois Extensions

### 15 March 2017, Macquarie

- 2pm: Ross Street – Series monoidal categories and Zeno functors
- 4pm: Michael Batanin – Mapping spaces and internal algebra classifiers

### 8 March 2017, Macquarie

### 1 March 2017, Macquarie

- 2pm: Emily Riehl – Algebraic and homotopical aspects of general Reedy categories
- 4pm: Dominic Verity – Power to the people (part 2)

### 22 February 2017, Macquarie

- 2pm: Dominic Verity – Power to the people (part 1)
- 4pm: Richard Garner – Chu spaces and the funny tensor product

### 15 February 2017, Macquarie

- 2pm: Emily Riehl – When is a diagram cofibrant?
- 4pm: Philip Hackney – A Reedy category for cyclic operads

### 8 February 2017, Macquarie

- 2pm: John Bourke – Algebraic weak equivalences
- 4pm: Emily Riehl – Cell complex presentations for Reedy categories

### 1 February 2017, Macquarie

- 2pm: Ross Street – Toil and trouble with Drinfeld's double
- 4pm: Steve Lack – Braidings on skew monoidal categories

### 18 January 2017, Macquarie

- 2pm: Philip Hackney – Higher cyclic operads
- 4pm: James Dolan – Quantales from kaleidoscopes

### 11 January 2017, Macquarie

- 2pm: Ross Street – Local convolution and MonCat-bicategories
- 4pm: David White – Model categories, the Grothendieck construction, and operads