Abstract
This paper develops a new approach in the analysis of the Camassa–Holm equation. By introducing a new set of independent and dependent variables, the equation is transformed into a semilinear system, whose solutions are obtained as fixed points of a contractive transformation. These new variables resolve all singularities due to possible wave breaking. Returning to the original variables, we obtain a semigroup of global solutions, depending continuously on the initial data. Our solutions are conservative, in the sense that the total energy equals a constant, for almost every time.
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Bressan, A., Constantin, A. Global Conservative Solutions of the Camassa–Holm Equation. Arch Rational Mech Anal 183, 215–239 (2007). https://doi.org/10.1007/s00205-006-0010-z
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DOI: https://doi.org/10.1007/s00205-006-0010-z