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Breakdown of $C^1$ solution to the Cauchy problem for quasilinear hyperbolic systems with characteristics with constant multiplicity
In this paper we consider the Cauchy problem for quasilinear
hyperbolic systems with characteristics with
constant multiplicity. Suppose that characteristics with constant
multiplicity ($>$1) are linearly degenerate only at $u=0$, if there
is a genuinely nonlinear simple characteristic which does not have
certain "monotonicity" and the initial data possess some
decaying properties, we obtain the blow-up result for the $C^1$
solution to the Cauchy problem.