Irreducible Representation

★★★★☆Undergraduate

📖Definition

Representation with no nontrivial proper subrepresentations. Building blocks of representation theory

📐Formulas

Maschke: finite group, char=0 ⟹ completely reducible
Schur lemma: Hom(V,W) = 0 or isomorphism

✏️Examples

예제 1

1-dimensional representations

예제 2

S₃ 2-dim irreducible

Applications

Classification

Quantum mechanics

Particle physics

🔗Related Documents

Prerequisites

Next Topics

#기약#irreducible#단순#simple