Vector Spaces

Rank of a Matrix

Counting the "useful" information in a matrix.
Requirements: RREF Difficulty: 3

Null Space (Kernel)

Finding vectors that a matrix squashes to zero.
Requirements: Linear Transf. Difficulty: 3

Column Space (Image)

The set of all possible outputs of a matrix.
Requirements: Span Difficulty: 3

Row Space

The space spanned by the rows of a matrix.
Requirements: Column Space Difficulty: 3

Rank-Nullity Theorem

The beautiful balance between rank and nullity.
Requirements: Rank, Null Space Difficulty: 4
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