Matrices for physics

Notation before the physics

Many modern physics courses assume fluency with matrices and the Einstein summation convention. This course fills that gap for students who need the notation before starting analytical mechanics or relativistic quantum mechanics.

• The Einstein summation convention and how to read it
• Coupled equations written as matrices
• Determinants and cofactors
• The identity matrix and how it behaves

Designed for physics students, and for anyone moving into advanced physics who has not yet worked with index notation.

How to approach it

Work the examples by hand before trusting any shortcut. The notation becomes second nature only once you have rewritten several coupled equations in matrix form yourself.