Consortium of Swiss Academic Libraries

Interpolation of nonlinear maps

Kappeler, T. ; Savchuk, A. ; Shkalikov, A. ; Topalov, P.

In: Mathematical Notes, 2014, vol. 96, no. 5-6, p. 957-964

Consortium of Swiss Academic Libraries

Birkhoff Coordinates for the Focusing NLS Equation

Kappeler, T. ; Lohrmann, P. ; Topalov, P. ; Zung, N.

In: Communications in Mathematical Physics, 2009, vol. 285, no. 3, p. 1087-1107

Consortium of Swiss Academic Libraries

On geodesic exponential maps of the Virasoro group

Constantin, A. ; Kappeler, T. ; Kolev, B. ; Topalov, P.

In: Annals of Global Analysis and Geometry, 2007, vol. 31, no. 2, p. 155-180