(adsbygoogle = window.adsbygoogle || []).push({}); second order pde -- on invariant?

What the meaning for a second order pde is rotation invariant?

Is all second order pde are rotation invariant? or only laplacian?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Second order pde - on invariant?

**Physics Forums | Science Articles, Homework Help, Discussion**