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Summer Graduate School

H-principle (Sendai, Japan) July 01, 2024 - July 12, 2024
Parent Program: --
Location: Sendai, Japan
Organizers Emmy Murphy (Princeton University), Takashi Tsuboi (RIKEN Interdisciplinary Theoretical and Mathematical Sciences Program)
Speaker(s)

Show List of Speakers

Description
1074 image
The image of a large sphere isometrically embedded into a small space through a C^1 embedding. (Attributions: E. Bartzos, V. Borrelli, R. Denis, F. Lazarus, D. Rohmer, B. Thibert)



This two week summer school, jointly organized by SLMath with RIKEN, will introduce graduate students to the theory of h-principles.  After building up the theory from basic smooth topology, we will focus on more recent developments of the theory, particularly applications to symplectic and contact geometry, fluid dynamics, and foliation theory.

h-principles in smooth topology (Emmy Murphy)
Riemannian geometry and applications to fluid dynamics (Dominik Inauen)
Contact and symplectic flexibility (Emmy Murphy)
Foliation theory and diffeomorphism groups (Takashi Tsuboi)

School Structure

The daily schedule consists centrally of two lectures a day. Each of the four courses above will consist of five 90 minute lectures, with the first two being in the first week, and the latter two during the second. The lecturers will prepare a list of problems to be discussed in TA sessions (along with answering students’ questions. The TA and lecturers will also guide the work in small groups in the afternoon sessions. It is possible that the working and discussion groups will continue informally after the dinner.

Reading List

Prerequisites

  • Basic Analysis and PDE.
  • Elementary algebraic topology (homotopy and homology groups).
  • Elementary differential topology (manifolds, vector fields and differential form calculus, basic Morse theory, vector bundles and characteristic classes).

Application Procedure

SLMath is only able to support a limited number of students to attend this school.  Therefore, it is likely that only one student per institution will be funded by SLMath.

For eligibility and how to apply, see the Summer Graduate Schools homepage.

Venue

The summer school will be held at TOKYO ELECTRON House of Creativity, Katahira Campus, Tohoku University. The participants will lodge together at Hotel Pearl City Sendai, which is five minutes from the venue.  Sendai is located north of Tokyo and can be reached in 90 minutes by Shinkansen (train).


 

Keywords and Mathematics Subject Classification (MSC)
Schedule, Notes/Handouts & Videos
Show Schedule, Notes/Handouts & Videos
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Jul 01, 2024
Monday
07:00 AM - 08:30 AM
  Breakfast
08:50 AM - 09:00 AM
  Opening Remarks
09:00 AM - 10:30 AM
  H-principles in smooth topology: 1) h-principle philosophy, examples, and holonomic approximation statement
Emmy Murphy (Princeton University)
10:30 AM - 11:00 AM
  Break
11:00 AM - 12:00 PM
  Teaching Assistant Session
12:00 PM - 01:30 PM
  Lunch
01:30 PM - 03:00 PM
  Riemannian geometry and applications to fluid dynamics: The Nash-Kuiper theorem 1: historical background, proof idea and "stage" proposition
Dominik Inauen (Universität Leipzig)
03:00 PM - 04:00 PM
  Afternoon Tea
04:00 PM - 05:00 PM
  Working in Small Groups
06:00 PM - 08:00 PM
  Welcome dinner with G-RIPS Sendai
08:00 PM - 10:00 PM
  Free Discussions
Jul 02, 2024
Tuesday
07:00 AM - 08:30 AM
  Breakfast
09:00 AM - 10:30 AM
  H-principles in smooth topology: 2) Proof of holonomic approximation, and applications
Emmy Murphy (Princeton University)
10:30 AM - 11:00 AM
  Break
11:00 AM - 12:00 PM
  Teaching Assistant Session
12:00 PM - 01:30 PM
  Lunch
01:30 PM - 03:00 PM
  Riemannian geometry and applications to fluid dynamics: The Nash-Kuiper theorem 2: decomposition into primitive metrics, normal vector fields and proof of the stage proposition
Dominik Inauen (Universität Leipzig)
03:00 PM - 04:00 PM
  Afternoon Tea
04:00 PM - 05:00 PM
  Working in Small Groups
06:00 PM - 08:00 PM
  Dinner
08:00 PM - 10:00 PM
  Free Discussions
Jul 03, 2024
Wednesday
07:00 AM - 08:30 AM
  Breakfast
09:00 AM - 10:30 AM
  H-principles in smooth topology 3): Convex integration, directed immersions
Emmy Murphy (Princeton University)
10:30 AM - 11:00 AM
  Break
11:00 AM - 12:00 PM
  Teaching Assistant Session
12:00 PM - 01:30 PM
  Lunch
01:30 PM - 03:00 PM
  Riemannian geometry and applications to fluid dynamics: The Nash-Kuiper theorem 3: "quantitative" version of stage proposition and C^{1,\alpha} isometries
Dominik Inauen (Universität Leipzig)
03:00 PM - 04:00 PM
  Afternoon Tea
04:00 PM - 05:00 PM
  Working in Small Groups
06:00 PM - 08:00 PM
  Dinner
08:00 PM - 10:00 PM
  Free Discussions
Jul 04, 2024
Thursday
07:00 AM - 08:30 AM
  Breakfast
09:00 AM - 10:30 AM
  H-principles in smooth topology: 4) Wrinkled maps
Emmy Murphy (Princeton University)
10:30 AM - 11:00 AM
  Break
11:00 AM - 12:00 PM
  Teaching Assistant Session
12:00 PM - 01:30 PM
  Lunch
01:30 PM - 03:00 PM
  Riemannian geometry and applications to fluid dynamics: 4) Euler equations: weak solutions, energy conservation and the Euler-Reynolds system
Dominik Inauen (Universität Leipzig)
03:00 PM - 04:00 PM
  Afternoon Tea
04:00 PM - 05:00 PM
  Working in Small Groups
06:00 PM - 08:00 PM
  Dinner
08:00 PM - 10:00 PM
  Free Discussions
Jul 05, 2024
Friday
07:00 AM - 08:30 AM
  Breakfast
09:00 AM - 10:30 AM
  H-principles in smooth topology: 5) Convex integration and wrinkling for embeddings
Emmy Murphy (Princeton University)
10:30 AM - 11:00 AM
  Break
11:00 AM - 12:00 PM
  Teaching Assistant Session
12:00 PM - 01:30 PM
  Lunch
01:30 PM - 03:00 PM
  Riemannian geometry and applications to fluid dynamics: 5) Euler equations: convex integration scheme for continuous dissipative Euler flows
Dominik Inauen (Universität Leipzig)
03:00 PM - 04:00 PM
  Afternoon Tea
04:00 PM - 05:00 PM
  Working in Small Groups
06:00 PM - 08:00 PM
  Dinner
08:00 PM - 10:00 PM
  Free Discussions
Jul 08, 2024
Monday
07:00 AM - 08:30 AM
  Breakfast
09:00 AM - 10:30 AM
  Contact and symplectic flexibility: 1) Intro to contact and symplectic geometry
Emmy Murphy (Princeton University)
10:30 AM - 11:00 AM
  Break
11:00 AM - 12:00 PM
  Teaching Assistant Session
12:00 PM - 01:30 PM
  Lunch
01:30 PM - 03:00 PM
  Foliation theory and diffeomorphism groups: 1) Definitions of foliations and examples. Foliations of the 2-dimensional torus
Takashi Tsuboi (RIKEN Interdisciplinary Theoretical and Mathematical Sciences Program)
03:00 PM - 04:00 PM
  Afternoon Tea
04:00 PM - 05:00 PM
  Working in Small Groups
06:00 PM - 08:00 PM
  Dinner
08:00 PM - 10:00 PM
  Free Discussions
Jul 09, 2024
Tuesday
07:00 AM - 08:30 AM
  Breakfast
09:00 AM - 10:30 AM
  Contact and symplectic flexibility: 2) h-principles for isotropic immersions/embeddings, isosymplectic/isocontac
Emmy Murphy (Princeton University)
10:30 AM - 11:00 AM
  Break
11:00 AM - 12:00 PM
  Teaching Assistant Session
12:00 PM - 01:30 PM
  Lunch
01:30 PM - 03:00 PM
  Foliation theory and diffeomorphism groups: 2) Invariants of plane fields. Holonomy of foliations. The Bott vanishing theorem. The Godbillon-Vey invariant
Takashi Tsuboi (RIKEN Interdisciplinary Theoretical and Mathematical Sciences Program)
03:00 PM - 04:00 PM
  Afternoon Tea
04:00 PM - 05:00 PM
  Working in Small Groups
06:00 PM - 08:00 PM
  Dinner
08:00 PM - 10:00 PM
  Free Discussions
Jul 10, 2024
Wednesday
07:00 AM - 08:30 AM
  Breakfast
09:00 AM - 10:30 AM
  Contact and symplectic flexibility: 3) Overtwisted 3-manifolds
Emmy Murphy (Princeton University)
10:30 AM - 11:00 AM
  Break
11:00 AM - 12:00 PM
  Teaching Assistant Session
12:00 PM - 01:30 PM
  Lunch
01:30 PM - 03:00 PM
  Foliation theory and diffeomorphism groups: 3) The h-principle for Diff V invariant differential relations and the h-principle for submersions and the theorem of Phillips
Takashi Tsuboi (RIKEN Interdisciplinary Theoretical and Mathematical Sciences Program)
03:00 PM - 04:00 PM
  Afternoon Tea
04:00 PM - 05:00 PM
  Working in Small Groups
06:00 PM - 08:00 PM
  Dinner
08:00 PM - 10:00 PM
  Free Discussions
Jul 11, 2024
Thursday
07:00 AM - 08:30 AM
  Breakfast
09:00 AM - 10:30 AM
  Contact and symplectic flexibility: 4) Loose Legendrians and flexible Weinstein manifolds
Emmy Murphy (Princeton University)
10:30 AM - 11:00 AM
  Break
11:00 AM - 12:00 PM
  Teaching Assistant Session
01:30 PM - 03:00 PM
  Foliation theory and diffeomorphism groups: 4) Definition of Haefliger's Gamma structures and Haefliger's theorem on foliations of open manifolds
Takashi Tsuboi (RIKEN Interdisciplinary Theoretical and Mathematical Sciences Program)
03:00 PM - 04:00 PM
  Afternoon Tea
04:00 PM - 05:00 PM
  Working in Small Groups
06:00 PM - 08:00 PM
  Dinner
08:00 PM - 10:00 PM
  Free Discussions
Jul 12, 2024
Friday
07:00 AM - 08:30 AM
  Breakfast
09:00 AM - 10:30 AM
  Contact and symplectic flexibility: 5) Recent results: overtwistedness and convex surface theory in high dimensions
Emmy Murphy (Princeton University)
10:30 AM - 11:00 AM
  Break
11:00 AM - 12:00 PM
  Teaching Assistant Session
12:00 PM - 01:00 PM
  Lunch
01:00 PM - 02:30 PM
  Foliation theory and diffeomorphism groups: 5) Thurston's theorem on the classification of foliations. The Mather-Thurston theory
Takashi Tsuboi (RIKEN Interdisciplinary Theoretical and Mathematical Sciences Program)
02:30 PM - 03:00 PM
  Afternoon Tea
03:00 PM - 05:00 PM
  G-RIPs Sendai midterm presentation
06:00 PM - 08:00 PM
  Farewell Party