# Tag Info

## New answers tagged differential-equations

1

The problem is that your point view is too "mathematical". No offence, but every acoustician would jump to the ceiling hearing "one can just erase all const, they do not change anything". Oh, they do $-$ very much! Since one of them is the sound speed... But I get it, you solve that as a mathematical problem and we are undoubtedly grateful for such people. ...

3

This is a subtle and somewhat complicated question, but I think the basic answer is no''. 1) The relativistic Boltzmann equation is $$p^\mu\partial_\mu f = C[f]$$ which has the same structure as the non-relativistic Boltzmann equation. This equation can be used to derive relativistic Fokker-Planck equations. One example is the Landau collision term, ...

0

In the general theory of partial differential equations and specifically for First-Order Partial Differential Equations one defines the general solution(Landau's general integral) and the complete integral as follows: For a first order partial differential equation $$f(x,y,z,z_x,z_y)=0 \tag{1}$$ Complete Integral: A two parameter family of solutions ...

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