Mathematics
This section contains theoretical notes, conceptual explanations, proofs, and worked exercises. Resources are organized by subject, with their level indicated within the individual materials.
Foundations
Numbers, operations, definitions, infinity, and the limits of familiar mathematical procedures.
Algebra
Equations, functions, logarithms, complex numbers, and symbolic relations, from elementary techniques to more advanced applications.
Calculus
Limits, sequences, series, continuity, differentiation, integration, and differential equations, with theoretical material and worked exercises.