Gallerie — Lecture Notes

Discret Hartley Transform is a unitary transform although its proof is hard to find in the Web. This short note explains that the Discrete Hartley Transform is an involution, which implies that this transform is unitary indeed.

Some notes on combinatorics

Cramer's rule is usually explained by cofactor expansion of determinant. This note explains two alternative and simple proofs.

Notes on quadratic functions for Mathematics Standard Level (Hey Mr.Zamar)

Resenha para a disciplina de Filosofia da Tecnologia sobre o filme "O Congresso Futurista"

trabajo universitario con explicación breve del módulo de young

Trabalho apresentado na Disciplina: Modelagem de Modelos Matemáticos no CEFET-MG Unidade Timóteo/MG

Just another Factor Analysis derivation. Refer to Stanford Lecture Notes CS229.

Kafka Style for Lecture Notes