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Mathematics
Topology
1. Introduction to Topological Concepts
2. Point-Set Topology
3. Algebraic Topology
4. Differential Topology
5. Geometric Topology
6. Advanced Topics
Differential Topology
Smooth Manifolds
Topological Manifolds
Definition and Examples
Hausdorff and Second Countable Conditions
Smooth Structures
Charts and Coordinate Systems
Atlases and Compatibility
Smooth Atlases
Maximal Atlases
Examples of Smooth Manifolds
Euclidean Space
Spheres
Tori
Projective Spaces
Grassmannians
Lie Groups
Smooth Maps
Definition between Manifolds
Local Coordinate Representations
Diffeomorphisms
Tangent Spaces and Derivatives
Tangent Vectors
Geometric Approach
Algebraic Approach via Derivations
Equivalence of Definitions
Tangent Spaces
Definition and Properties
Dimension of Tangent Space
Differential of Smooth Maps
Definition and Properties
Chain Rule
Local Coordinate Formula
Tangent Bundle
Definition as Disjoint Union
Smooth Structure on Tangent Bundle
Vector Bundle Structure
Submanifolds
Regular Level Sets
Regular Values
Preimage Theorem
Embedded Submanifolds
Definition and Examples
Whitney Embedding Theorem
Immersed Submanifolds
Immersions and Embeddings
Examples of Immersions
Sard's Theorem
Statement and Applications
Generic Properties
Vector Fields and Flows
Vector Fields
Definition and Examples
Smooth Vector Fields
Vector Fields as Sections
Integral Curves
Existence and Uniqueness
Maximal Integral Curves
Flows
One-Parameter Groups
Complete Vector Fields
Lie Derivatives
Differential Forms
Cotangent Spaces
Linear Functionals on Tangent Spaces
Cotangent Bundle
Differential 1-Forms
Definition and Examples
Pullback of Forms
Higher Degree Forms
Alternating Multilinear Forms
Wedge Product
Exterior Algebra
Exterior Derivative
Definition and Properties
de Rham Complex
Closed and Exact Forms
Integration of Forms
Orientation of Manifolds
Integration on Oriented Manifolds
Stokes' Theorem
de Rham Cohomology
Definition and Basic Properties
Relationship to Singular Cohomology
Morse Theory
Morse Functions
Critical Points
Non-Degenerate Critical Points
Morse Lemma
Index of Critical Points
Hessian Matrix
Index and Nullity
Morse Inequalities
Relationship to Homology
Applications to Topology
Handle Decompositions
Attaching Handles
CW Structure from Morse Functions
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5. Geometric Topology