AUTHOR=Gefter Sergiy L. , Piven' Aleksey L. TITLE=Some class of nonlinear partial differential equations in the ring of copolynomials over a commutative ring JOURNAL=Frontiers in Applied Mathematics and Statistics VOLUME=10 YEAR=2024 URL=https://www.frontiersin.org/journals/applied-mathematics-and-statistics/articles/10.3389/fams.2024.1466569 DOI=10.3389/fams.2024.1466569 ISSN=2297-4687