The spectral radius is considered to be an asymptotic measure of convergence because it predicts the worst-case error reduction over many iterations. It can be shown [9, 20] that, in any vector norm, p(R) : llRmlll/mTherefore, ...
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Partial Differential Equations: Foundations and integral representations
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Partial Differential Equations
Pseudodifferential Operators
This text provides an introduction to the theory of partial differential equations.
This is the second edition of the now definitive text on partial differential equations (PDE).