On global regularity of some bi-rotational Euler flows in ${\mathbb{R}}^4$

Kyudong Choi, In-Jee Jeong, Deokwoo Lim

In this paper, we consider incompressible Euler flows in ${\mathbb{R}}^4$ under bi-rotational symmetry, namely solutions that are invariant under rotations in ${\mathbb{R}}^4$ fi…