frobenius algebras and 2d topological quantum field theories

66
Frobenius algebras and 2D topological quantum field theories Junior Topology Seminar Mustafa Hajij Note: All figures used in this file are from the reference mentioned in the last slide.

Upload: others

Post on 11-May-2022

4 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: Frobenius algebras and 2D topological quantum field theories

Frobenius algebras and 2D topological quantum field theories

Junior Topology Seminar

Mustafa Hajij

Note: All figures used in this file are from the reference mentioned in the last slide.

Page 2: Frobenius algebras and 2D topological quantum field theories

Monoidal Categories

Page 3: Frobenius algebras and 2D topological quantum field theories

Monoidal Categories

Page 4: Frobenius algebras and 2D topological quantum field theories

Monoidal Categories

Page 5: Frobenius algebras and 2D topological quantum field theories

Monoidal Categories

Page 6: Frobenius algebras and 2D topological quantum field theories

Monoidal Categories

Page 7: Frobenius algebras and 2D topological quantum field theories

Monoidal Categories

Page 8: Frobenius algebras and 2D topological quantum field theories

Monoidal Categories

Page 9: Frobenius algebras and 2D topological quantum field theories

Monoidal Categories

Page 10: Frobenius algebras and 2D topological quantum field theories

Monoidal Categories

Page 11: Frobenius algebras and 2D topological quantum field theories

Monoidal Categories

Page 12: Frobenius algebras and 2D topological quantum field theories

Monoidal Functors

Page 13: Frobenius algebras and 2D topological quantum field theories

Monoidal Functors

Page 14: Frobenius algebras and 2D topological quantum field theories

Monoidal Functors

Page 15: Frobenius algebras and 2D topological quantum field theories

Monoidal categories VS strict monoidal categories

Page 16: Frobenius algebras and 2D topological quantum field theories

Examples of monoidal categories

Page 17: Frobenius algebras and 2D topological quantum field theories

Examples of monoidal categories

Page 18: Frobenius algebras and 2D topological quantum field theories

Examples of monoidal categories

Page 19: Frobenius algebras and 2D topological quantum field theories

Examples of monoidal categories

Page 20: Frobenius algebras and 2D topological quantum field theories

Examples of monoidal categories

Page 21: Frobenius algebras and 2D topological quantum field theories

Oriented cobordism

Page 22: Frobenius algebras and 2D topological quantum field theories

Oriented cobordism

Page 23: Frobenius algebras and 2D topological quantum field theories

Equivalent cobordisms

Page 24: Frobenius algebras and 2D topological quantum field theories

The composition of two cobordism classes

Page 25: Frobenius algebras and 2D topological quantum field theories

The identity cobordism and invertible cobordisms

Page 26: Frobenius algebras and 2D topological quantum field theories

The identity cobordism and invertible cobordisms

Page 27: Frobenius algebras and 2D topological quantum field theories

The Category nCob

Page 28: Frobenius algebras and 2D topological quantum field theories

n-TQFT

Page 29: Frobenius algebras and 2D topological quantum field theories

n-TQFT

Page 30: Frobenius algebras and 2D topological quantum field theories

n-TQFT

Page 31: Frobenius algebras and 2D topological quantum field theories

n-TQFT

Page 32: Frobenius algebras and 2D topological quantum field theories

n-TQFT

Page 33: Frobenius algebras and 2D topological quantum field theories

More category theory

Page 34: Frobenius algebras and 2D topological quantum field theories

More category theory

Page 35: Frobenius algebras and 2D topological quantum field theories

More category theory

Page 36: Frobenius algebras and 2D topological quantum field theories

A Skeleton for 2Cob

Page 37: Frobenius algebras and 2D topological quantum field theories

A generating set for 2Cob

Page 38: Frobenius algebras and 2D topological quantum field theories

A generating set for 2Cob

Page 39: Frobenius algebras and 2D topological quantum field theories

Relations for 2Cob

Page 40: Frobenius algebras and 2D topological quantum field theories

Relations for 2Cob

Page 41: Frobenius algebras and 2D topological quantum field theories

Relations for 2Cob

Page 42: Frobenius algebras and 2D topological quantum field theories

Algebras

Page 43: Frobenius algebras and 2D topological quantum field theories

Non-degenerate bilinear map

Page 44: Frobenius algebras and 2D topological quantum field theories

Non-degenerate bilinear map

Page 45: Frobenius algebras and 2D topological quantum field theories

Associative bilinear map

Page 46: Frobenius algebras and 2D topological quantum field theories

Frobenius algebras

Page 47: Frobenius algebras and 2D topological quantum field theories

Frobenius algebras

Page 48: Frobenius algebras and 2D topological quantum field theories

A Frobenius algebra has a natural coalgebra structure

Page 49: Frobenius algebras and 2D topological quantum field theories

A Frobenius algebra has a natural coalgebra structure

Page 50: Frobenius algebras and 2D topological quantum field theories

A Frobenius algebra has a natural coalgebra structure

Page 51: Frobenius algebras and 2D topological quantum field theories

A Frobenius algebra has a natural coalgebra structure

Page 52: Frobenius algebras and 2D topological quantum field theories

More relations between maps

Page 53: Frobenius algebras and 2D topological quantum field theories

More relations between maps

Page 54: Frobenius algebras and 2D topological quantum field theories

The twist map

Page 55: Frobenius algebras and 2D topological quantum field theories

The twist map relations

Page 56: Frobenius algebras and 2D topological quantum field theories

Commutative and co-commutative algebras

Page 57: Frobenius algebras and 2D topological quantum field theories

Commutative and co-commutative algebras

Page 58: Frobenius algebras and 2D topological quantum field theories

The main theorem

Page 59: Frobenius algebras and 2D topological quantum field theories

The main theorem

Page 60: Frobenius algebras and 2D topological quantum field theories

The main theorem

Page 61: Frobenius algebras and 2D topological quantum field theories

The main theorem

Page 62: Frobenius algebras and 2D topological quantum field theories

The main theorem

Page 63: Frobenius algebras and 2D topological quantum field theories

The main theorem

Page 64: Frobenius algebras and 2D topological quantum field theories

The main theorem

Page 65: Frobenius algebras and 2D topological quantum field theories

Ref.

Page 66: Frobenius algebras and 2D topological quantum field theories

Thank you