




From this page you can download the .pdf files of the transparencies for many of the talks I have given in the last few years, mostly seminars on my own research, plus a few similar things like lecture handouts which accompanied my lecture courses.
Seminar given in Cambridge, March 2002, 'Constructing compact manifolds with exceptional holonomy'. pdf file
Seminar given in Gökova, May 2002, 'U(1)invariant special Lagrangian 3folds in C^{3}and special Lagrangian fibrations'. pdf file
Seminar given in Gökova, May 2004, 'Introduction to calibrated geometry'. pdf file
Seminar given in Dublin, November 2005, 'Counting coherent sheaves on CalabiYau 3folds'. pdf file
Two talks given in Rice, November 2005:
First talk, 'Introduction to Riemannian holonomy groups and calibrated geometry'. pdf file
Second talk, 'Singularities of special Lagrangian submanifolds and SYZ'. pdf file
A series of three talks on my papers on 'Configurations in abelian categories', given to the Algebraic Geometry seminar in Oxford, JanuaryFebruary 2006:
First talk, 'Artin stacks, constructible functions and motivic invariants'. pdf file
Second talk, 'Configurations in abelian categories: introduction, and RingelHall algebras'. pdf file
Third talk, 'Configurations in abelian categories: stability conditions, and invariants counting semistable objects'. pdf file
Seminar given in Oxford, June 2006, 'Holomorphic generating functions for invariants counting sheaves on CalabiYau 3folds'. pdf file
Seminar given in Palo Alto, June 2006, 'Difficult problems in special Lagrangian geometry'. pdf file
Graduate lecture course on 'Riemannian holonomy groups and calibrated geometry', 16 lectures, Michaelmas Term 2006:
Some survey papers by me which are useful background reading for the lectures:
'Lectures on CalabiYau and special Lagrangian geometry', math.DG/0108088, pdf file.
'The exceptional holonomy groups and calibrated geometry', math.DG/0406011, pdf file.
The definitive text on the subject is of course my book 'Compact manifolds with special holonomy', O.U.P. 2000, which you should ask your parents to buy you for Christmas.
Two talks given in Taiwan, July 2007:
First talk, 'Singularities of special Lagrangian submanifolds'. pdf file
Second talk, 'Important problems in special Lagrangian geometry'. pdf file
A series of three 6090 minute talks given in Kyoto, September 2008:
First talk, 'Kuranishi (co)homology: a new tool in symplectic geometry. I. Overview'. pdf file
Second talk, 'Kuranishi (co)homology: a new tool in symplectic geometry. II. Kuranishi (co)homology'. pdf file
Third talk, 'Kuranishi (co)homology: a new tool in symplectic geometry. III. Effective Kuranishi (co)homology, integrality, and Kuranishi (co)bordism'. pdf file
Two 45 minute talks given in Zurich, November 2008:
First talk, 'Kuranishi (co)homology: a new tool in symplectic geometry. I. Overview'. pdf file
Second talk, 'Kuranishi (co)homology: a new tool in symplectic geometry. II. Kuranishi (co)homology'. pdf file
A two hour talk given in Oxford, December 2008, joint with Yinan Song:
'Generalized DonaldsonThomas invariants'. pdf file
A handout to go with this talk:
'A quick introduction to stack functions'. pdf file
Talk given in Oslo, June 2009:
'DonaldsonThomas invariants of CalabiYau 3folds'. pdf file
Talk given in Oxford and in Paris, January 2010:
'Dorbifolds, Kuranishi spaces, and polyfolds'. pdf file
Talk given in Lisbon, June 2010:
'A theory of generalized DonaldsonThomas invariants'. pdf file
Talk given in Cambridge, April 2011:
'Dmanifolds, a new theory of derived differential geometry'. pdf file
Talk given in Leicester, April 2011:
'Derived differential geometry'. pdf file
Talks (2.5 hours) given in Oxford, October 2011, at workshop to launch EPSRC programme grant 'Motivic invariants and categorification':
'DonaldsonThomas theory: introduction and open problems'. pdf file
Talk given in Luminy, July 2012:
'Dmanifolds and derived differential geometry'. pdf file
Three talks given in Tokyo, July 2012:
'Dmanifolds and dorbifolds: a theory of derived differential geometry.'.
Talk given in Banff, June 2013:
'Categorification of DonaldsonThomas theory using perverse sheaves'. pdf file
Talk given in Stony Brook, June 2013:
'Quantization of 3CalabiYau moduli spaces'. pdf file
Talks given Oxford, October 2013, at a workshop for our EPSRC Programme Grant research group:
'Shifted symplectic geometry, CalabiYau moduli spaces, and generalizations of DonaldsonThomas theory: our current and future research'. pdf file
Two talks given Warwick, November 2013:
'A Darboux theorem for shifted symplectic derived schemes; dcritical loci'. pdf file
'Extensions of DonaldsonThomas theory of CalabiYau 3folds'. pdf file
A series of three talks given Miami, January 2014:
' "Darboux theorems" for shifted symplectic derived schemes and stacks'. pdf file
'Dcritical loci, and categorification of DonaldsonThomas theory using perverse sheaves'. pdf file
'Motivic DonaldsonThomas theory, CalabiYau 4fold counting invariants, and future projects'. pdf file
A series of five lectures given at the Simons Center, Stony Brook, May 2014:
'Lecture 1. The dorbifold programme: overview'. pdf file
'Lecture 2. The 2categories of dmanifolds and dorbifolds'. pdf file
'Lecture 3. Dorbifold structures on moduli spaces, dorbifolds as representable 2functors'. pdf file
'Lecture 4. Dmanifolds and dorbifolds with corners. Stratified manifolds and 'bubbling' '. pdf file
'Lecture 5. Dorbifold homology and cohomology, and virtual cycles'. pdf file
Talk given in Oxford, July 2014:
'Shifted symplectic geometry and categorification'. pdf file
Talk given in Warwick, September 2014:
'Dmanifolds and derived differential geometry'. pdf file
Talk given in Lancaster, April 2015:
'New DonaldsonThomas style counting invariants for CalabiYau 4folds'. pdf file
14 hour lecture course on 'Derived Differential Geometry' given in Aarhus, August 2015:
See the course web page.
Talk given at Kings College London, December 2015:
'Derived differential geometry'. pdf file
Talk given in Waterloo, Ontario, April 2016:
'Categorification of shifted symplectic geometry using perverse sheaves'. pdf file
Talk given in Chengdu, China, May 2016:
'A new theory of Kuranishi spaces'. pdf file
Talk given in Zürich, July 2016:
'“Fukaya categories” of complex Lagrangians in complex symplectic manifolds'. pdf file
Talk given at the Simons Center, Stony Brook, September 2016:
'Derived Differential Geometry and moduli spaces in differential geometry'. pdf file
Talks given at the UKJapan Winter School, UCL, January 2017:
'Lagrangian Mean Curvature Flow in CalabiYau manifolds and the ThomasYau Conjecture. I, II'. pdf file 1 pdf file 2
Two (unrelated) talks given in York, June 2017:
'Conjectures on counting associative 3folds in G_{2}manifolds'. pdf fileTalk given at Imperial College London, January 2018:
'Lie brackets on the homology of moduli spaces, and wallcrossing formulae'. pdf file
Talk given at MSRI, March 2018:
'Lie brackets and vertex algebra structures on the homology of
moduli spaces, and wallcrossing formulae'. pdf file
Talk given in Oxford, May 2018:
'A RingelHall type construction of vertex algebras'. pdf file
Talk given in Imperial, June 2018:
'On Mirror Symmetry, Fukaya categories, and Bridgeland
stability, with a view towards Lagrangian Mean Curvature Flow'.
pdf file
'Shifted Symplectic Derived Algebraic Geometry and generalizations of DonaldsonThomas Theory.'.
Talk given in Bath, December 2018:
'A RingelHall type construction of vertex algebras'. pdf file
Talk given in Kyoto, February 2019:
'What is a Kuranishi space?'. pdf
file
Talk given in Dublin, May 2019:
'Vertex algebra and Lie algebra structures on the homology of
moduli spaces'. pdf file
Summer school on Differential Geometry and Complex Geometry given in Nairobi, August 2019. webpage
Talk given in Imperial, January 2020:
'Shifted symplectic Derived Algebraic Geometry for dummies'.
pdf file
Talk given in Oxford, May 2020:
'Universal structures in enumerative invariant theories'. pdf file
Talk given in Jerusalem (virtually, unfortunately), May 2021:
'Universal structures in enumerative invariant theories'. pdf file
Talk given in Paris, April 2022:
'A universal theory of enumerative invariants and wallcrossing
formulae'. pdf file
Talk given online to Kuranishi memorial conference, Columbia,
May 2022:
'What is a Kuranishi space?'. pdf
file
Talk given in Les Diablarets, June 2022:
'Counting semistable coherent sheaves on surfaces'. pdf file
Talk given (online) in New York, September 2022:
'Counting semistable coherent sheaves on surfaces'. pdf file
Talk given in Oxford, January 2023:
'The structure of invariants counting coherent sheaves on
surfaces'. pdf file
Talk given in Aberdeen, March 2023:
'What is Derived Geometry?'. pdf
file
Talk given in Oslo, December 2023:
'The structure of invariants counting coherent sheaves on
surfaces'. pdf
file