Lectures related to Identity element

Introduces linear combinations in vector spaces, operations, and polynomials of degree 2.

Covers matrix operations and properties of matrices, including symmetric and anti-symmetric matrices.

Introduces modular arithmetic, its properties, and applications in cryptography and coding theory.

Covers the properties of rational multiplication through fractions and simple calculations, leading to the resolution of division problems.

Covers the basics of group theory, including sets, applications, and examples like permutations and rotations.

Covers the properties of rational numbers and introduces the concept of an ordered field in Q.