Second order pde - on invariant?

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SUMMARY

The discussion centers on the concept of rotation invariance in second order partial differential equations (PDEs), specifically questioning whether all second order PDEs exhibit this property or if it is exclusive to the Laplacian operator. Participants clarify that the Laplacian is indeed rotation invariant under certain conditions, prompting further inquiry into the specific criteria that must be met for this invariance to hold. The conversation emphasizes the need to understand the foundational definitions and proofs related to rotation invariance in the context of second order PDEs.

PREREQUISITES
  • Understanding of second order partial differential equations (PDEs)
  • Familiarity with the Laplacian operator and its properties
  • Knowledge of mathematical proofs related to invariance
  • Basic concepts of differential geometry and transformations
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  • Research the conditions under which the Laplacian is rotation invariant
  • Explore the properties of other second order PDEs to determine their invariance
  • Study mathematical proofs related to rotation invariance in PDEs
  • Learn about differential geometry concepts that relate to invariance
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Mathematicians, physicists, and students studying differential equations, particularly those focusing on the properties of second order PDEs and their applications in various fields.

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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?
 
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Well, do you know what "rotation invarient" means to start with?
It sounds like you've come across the terms as part of a course involving laplacians - in which case, you were shown a proof somewhere that the laplacian is rotation invarient. What was the condition the laplacian had to satisfy for the proof to work? Do all 2ndO PDEs satisfy this condition?
 

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