bbdc70ef-5f3b-488b-9613-ccd79c111cba20250130065021084wseas:wseasmdt@crossref.orgMDT DepositWSEAS TRANSACTIONS ON MATHEMATICS2224-28801109-276910.37394/23206http://wseas.org/wseas/cms.action?id=4051120202512020252410.37394/23206.2025.24https://wseas.com/journals/mathematics/2025.phpMohamed KarimouGaziboÉcole Normale Supérieure, Département de Mathématiques, Université Abdou Moumouni, Laboratoire de Mathématiques Fondamentales et Applications (LMFA), BP:10963 Niamey, NIGERIn this note, we propose a new proof of existence of 𝐿∞ strong trace of entropy solution for multidimensional degenerate parabolic-hyperbolic equation in a bounded domain Ω ⊂ IRℓ reached by 𝐿1 convergence. The proof is based on using of concept of quasi solution.1302025130202516253https://wseas.com/journals/mathematics/2025/a065106-2057.pdf10.37394/23206.2025.24.3https://wseas.com/journals/mathematics/2025/a065106-2057.pdfM. 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