Dirac's equation notation definition?

[Bowenwww]

Homework Statement

I've been asked to write what this is explicitly - γ^μ∂_μ

Homework Equations

(γ^μ∂_μ-im)ψ = 0 - Dirac's equation

The Attempt at a Solution

I understand that γ^μ is a matrix but depending on what μ is they're all completely different :S

How can it be written explicitly if it completely changes based on μ?


Thanks in advance guys,

K Xoxo

 

[dextercioby]

It's just a sum of 4 terms, I think you're supposed to write them all with the + sign 3 times between them. And probably even more, namely use a specific representation of the gamma matrices.