Farjudian, Amin; Emamizadeh, Behrouz Absolute continuity in partial differential equations. (English) Zbl 1384.28019 Real Anal. Exch. 40(2014-2015), No. 1, 209-218 (2015). Summary: In this note, we study a function which frequently appears in partial differential equations. We prove that this function is absolutely continuous; hence it can be written as a definite integral. As a result, we obtain some estimates regarding solutions of the Hamilton-Jacobi systems. MSC: 28D05 Measure-preserving transformations 35F21 Hamilton-Jacobi equations Keywords:absolute continuity; weak convergence; rearrangements of functions; measure preserving maps; Hamilton-Jacobi systems × Cite Format Result Cite Review PDF Full Text: DOI Euclid Link