Pauli matrices

Rare card · No. 67372

In mathematical physics and mathematics, the Pauli matrices are a set of three 2 × 2 {\displaystyle 2\times 2} complex matrices that are traceless, Hermitian, involutory and unitary. They are usually denoted by the Greek letter σ {\displaystyle \sigma } (sigma), and occasionally by τ {\displaystyle \tau } (tau) when used in connection with isospin symmetries. σ 1 = σ x = (...

Read on Wikipedia · Image Unknown authorUnknown author, CC BY 4.0