Hyperbolic System of Partial Differential Equations
Consider the following system of first order partial differential equations for unknown functions, where
are once continuously differentiable functions, nonlinear in general.
Now define for each a matrix
We say that the system is hyperbolic if for all the matrix has only real eigenvalues and is diagonalizable.
If the matrix has distinct real eigenvalues, it follows that it's diagonalizable. In this case the system is called strictly hyperbolic.
Read more about this topic: Hyperbolic Partial Differential Equations
Famous quotes containing the words system, partial and/or differential:
“The United States is unusual among the industrial democracies in the rigidity of the system of ideological controlindoctrination we might sayexercised through the mass media.”
—Noam Chomsky (b. 1928)
“And meanwhile we have gone on living,
Living and partly living,
Picking together the pieces,
Gathering faggots at nightfall,
Building a partial shelter,
For sleeping and eating and drinking and laughter.”
—T.S. (Thomas Stearns)
“But how is one to make a scientist understand that there is something unalterably deranged about differential calculus, quantum theory, or the obscene and so inanely liturgical ordeals of the precession of the equinoxes.”
—Antonin Artaud (18961948)