## A uniqueness condition for hyperbolic systems of conservation laws.(English)Zbl 1157.35421

Summary: Consider the Cauchy problem for a hyperbolic $$n\times n$$ system of conservation laws in one space dimension: $$u_t+ f(u)_x= 0$$, $$u(0,x) = \overline{u}(x).$$ (CP)
Relying on the existence of a continuous semigroup of solutions, we prove that the entropy admissible solution of (CP) is unique within the class of functions $$u = u(t, x)$$ which have bounded variation along a suitable family of space-like curves.

### MSC:

 35L65 Hyperbolic conservation laws 35L45 Initial value problems for first-order hyperbolic systems
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