Integral Geometry of Euler Equations

Arnold, V.I., Khesin, B.A.: Topological Methods in Hydrodynamics. Springer, Berlin (1998)

Chae, D., Constantin, P.: Remarks on a Liouville-type theorem for Beltrami flows. Int. Math. Res. Not. 20, 10012–10016 (2015)

Enciso, A., Peralta-Salas, D.: Existence of knotted vortex tubes in steady Euler flows. Ann. Math. 175, 345–367 (2012)

Gonzalez, F., Helgason, S.: Invariant differential operators on Grassmann manifolds. Adv. Math. 60, 81–91 (1986)

John, F.: The ultrahyperbolic differential equation with four independent variables. Duke Math. J. 4(2), 300–322 (1938)

Nadirashvili, N.: Liouville theorem for Beltrami flow. Geom. Funct. Anal. 24, 916–921 (2014)

Nadirashvili, N., Sharafutdinov, V.A., Vlăduţ, S.: The John equation for tensor tomography in three-dimensions. Inverse Probl. 32, 105013 (2016). doi: 10.1088/0266-5611/32/10/105013

Sharafutdinov, V.A.: Integral Geometry of Tensor Fields. VSP, Utrecht (1994)