boalch (at) dma (dot) ens (dot) fr
Date | Topics | Comments |
1/3 | Motivation/Introduction |
Abelian Gauss-Manin connection, Gauss's example, sketch nonabelian case, Betti and DeRham viewpoints |
3/3 | Review of differential geometry | References: Frank Warner, Foundations of Differentiable Manifolds and Lie Groups Libermann and Marle, Symplectic geometry and analytical mechanics |
8/3 |
Lie group basics Some complex symplectic geometry |
Left-invariant vector fields, exponential map, one-parameter subgroups,
group actions, fundamental vector fields, conjugation, Adjoint action, adjoint action Darboux charts, Hamiltonian vector fields, induced Poisson structure |
10/3 | More symplectic geometry | cotangent bundles, coadjoint orbits and KKS theorem |
15/3 | More symplectic geometry | Moment maps, symplectic quotients |
20/3 | Bundles |
Fiber bundles, vector bundles, clutching maps, constructions, vector bundles on the Riemann sphere, jumping lines |
22/3 | Connections on vector bundles |
Definitions, covariant derivatives, local expressions, gauge
transformations, curvature, flatness as condition for commuting covariant derivatives |
24/3 | More connections | "Nonabelian Poincare lemma", constructions, local system of solutions, monodromy |
29/3 | Basic Riemann-Hilbert correspondence |
Flat holomorphic connections, Flat smooth connections, local systems, bundles
with constant clutching maps, conjugacy classes of fundamental group representations. Connections on arbitrary fibre bundles (notions of flatness and completeness plus relation with constant clutching maps) |
31/3 | Logarithmic connections | Definitions, residues, restriction to divisor, Fuchsian systems, local non-resonant classification on curves. |
5/4 | Simple moduli spaces | stability, sufficient conditions for smoothness |
7/4 | Isomonodromic deformations | Local system of monodromy manifolds, De Rham interpretation, good trivialisations. Derivation of Schlesinger's equations |
28/4 | Schlesinger's equations | Time-dependent Hamiltonians, Malgrange's universality theorem |
1/5 | Sixth Painlevé equation |
Some history, Painleve/Kowalevskaya property, First order equations with
Painleve property, standard relation between PVI and Schlesinger equations |
5/5 | More PVI | Nonlinear monodromy, Fricke relation, cubic
surfaces, mapping class and braid group actions Okamoto affine D4 and F4 Weyl group symmetries |
30/5 | Final Exam |