2016 Special lectures on current topics in Mathematics D

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Academic unit or major
Graduate major in Mathematics
Instructor(s)
Kalman Tamas 
Class Format
Lecture     
Media-enhanced courses
Day/Period(Room No.)
Intensive (H213)  
Group
-
Course number
MTH.E634
Credits
2
Academic year
2016
Offered quarter
3-4Q
Syllabus updated
2016/4/27
Lecture notes updated
-
Language used
Japanese
Access Index

Course description and aims

In this lecture series we introduce the concepts of knot, link, 3-dimensional manifold, Alexander polynomial and so on, and prove some of their basic properties. We also discuss Morse and Floer theory. To help better understand the material, practice problems will be provided and their solutions collected.
The aim of the course is to build a strong foundation in low-dimensional topology. thus enabling students to start doing independent research in the field.

Student learning outcomes

The main themes of the course are knot theory and Floer homology groups associated to 3-dimensional manifolds. Floer homology is currently one of the most advanced tools used in topology and related fields, with many possible applications. After covering the basics of low-dimensional topology, our main focus will be Heegaard Floer homology.

Keywords

Knot, link, 3-dimensional manifold, Alexander polynomial, genus and fibredness, Morse theory, Floer homology

Competencies that will be developed

Specialist skills Intercultural skills Communication skills Critical thinking skills Practical and/or problem-solving skills

Class flow

Regular lecture course format with homework exercises

Course schedule/Required learning

  Course schedule Required learning
Class 1 Knots, links, genus and fibredness. Formal properties of knot Floer homology. to be specified in each lecture
Class 2 Three definitions of the Alexander polynomial (infinite cyclic cover, Rolfsen's surgical view, Seifert matrix). Seifert's theorem (on the genus and the degree of the Alexander polynomial). to be specified in each lecture
Class 3 Neuwirth's theorem (on fiberedness and the leading coefficient of the Alexander polynomial), definition of the Alexander polynomial via Fox calculus. to be specified in each lecture
Class 4 Kauffman’s state model、Conway's skein relation for the Alexander polynomial. Grid diagrams. to be specified in each lecture
Class 5 Combinatorial definition of knot Floer homology, its grading and Euler characteristic. to be specified in each lecture
Class 6 The (combinatorial) proof of d^2=0 and invariance. Outline of general Floer theory. to be specified in each lecture
Class 7 Morse function, Morse lemma, changes in sublevel sets. Heegaard decomposition for 3-dimensional manifolds. to be specified in each lecture
Class 8 Gradient flow, transversality, moduli spaces and their orientation. to be specified in each lecture
Class 9 Compactness via broken flow lines, Morse complex, gluing. to be specified in each lecture
Class 10 The isomorphism of Morse homology and singular homology. to be specified in each lecture
Class 11 Symplectic geometry, Lagrangian submanifolds, action functional. to be specified in each lecture
Class 12 Holomorphic curves, Lagrangian intersection homology, Maslov index. to be specified in each lecture
Class 13 Heegaard diagrams, spin^c structures, Heegaard Floer homology for closed manifolds. to be specified in each lecture
Class 14 d^2=0 and invariance. The original definition of knot Floer homology. to be specified in each lecture
Class 15 Sutured Floer homology and the proof of genus and fibredness detection. to be specified in each lecture

Textbook(s)

none in particular

Reference books, course materials, etc.

Some of the lecture will follow recent survey papers by Juhasz (arXiv:1310.3418) and Manolescu (http://arxiv.org/abs/1401.7107). For the Morse theory part, Hutchings's lecture notes (http://math.berkeley.edu/~hutching/teach/276-2010/mfp.ps) will be useful.

Assessment criteria and methods

Evaluation will be based on homework. Details will be specified in the class.

Related courses

  • MTH.B301 : Geometry I
  • MTH.B302 : Geometry II
  • MTH.B331 : Geometry III
  • MTH.B341 : Topology
  • MTH.C301 : Complex Analysis I

Prerequisites (i.e., required knowledge, skills, courses, etc.)

Complex analysis (up to the Riemann mapping theorem), algebraic topology (homology and homotopy), and smooth manifolds (for example, integral trajectories of a vector field) will be useful. The most important thing, however, is to have an open and inquisitive mind!

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