- #1
Mentz114
- 5,432
- 292
Has anyone come across this operator ?
[tex]\frac{\partial^2}{\partial_x\partial_y} + \frac{\partial^2}{\partial_x\partial_z} + \frac{\partial^2}{\partial_z\partial_y}[/tex]
I've never seen it until it came up in a field theory context. What can it mean ?
[tex]\frac{\partial^2}{\partial_x\partial_y} + \frac{\partial^2}{\partial_x\partial_z} + \frac{\partial^2}{\partial_z\partial_y}[/tex]
I've never seen it until it came up in a field theory context. What can it mean ?