We prove Gagliardo–Nirenberg interpolation inequalities estimating the Sobolev semi-norm in terms of the bounded mean oscillation semi-norm and of a Sobolev semi-norm, with some of the Sobolev semi-norms having fractional order.
Van Schaftingen, J. (2023). Fractional Gagliardo–Nirenberg interpolation inequality and bounded mean oscillation. Comptes rendus - Mathématique, 361(G6), 1041-1049. https://doi.org/10.5802/crmath.463 (Original work published 2023)