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Mathematics
Linear Algebra
1. Foundations of Linear Systems
2. Matrix Theory and Operations
3. Determinants
4. Vector Spaces and Subspaces
5. Linear Transformations
6. Inner Products and Orthogonality
7. Eigenvalues and Eigenvectors
8. Advanced Topics
Inner Products and Orthogonality
Inner Product Spaces
Definition of inner product
Inner product axioms
Examples of inner products
Dot product in Rⁿ
Matrix inner products
Function inner products
Norm induced by inner product
Distance and angles
Orthogonality
Orthogonal vectors
Orthogonal sets
Orthonormal sets
Properties of orthogonal sets
Orthogonal complements
Orthogonal decomposition
Orthogonal Projections
Projection onto a line
Projection onto subspaces
Projection matrices
Properties of projections
Best approximation theorem
Gram-Schmidt Process
Orthogonalization procedure
Normalization step
QR factorization
Orthogonal matrices
QR decomposition algorithm
Applications of QR factorization
Least Squares Problems
Overdetermined systems
Normal equations
Least squares solutions
Geometric interpretation
Applications to curve fitting
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7. Eigenvalues and Eigenvectors