Pacific absolute plate-motion change as obtained from a hotspot reference frame (red; from Wessel and Kroenke (2008)) versus as obtained from RPM analysis (blue; fixed Eurasia plate). Map shows the 30 ...
We present a new formula relating the normal Euler numbers of embedded surfaces in 4-space and the number of triple points on their projections into 3-space. This formula generalizes Banchoff's ...
We derive a new variational principle, leading to a new momentum map and a new multisymplectic formulation for a family of Euler–Poincaré equations defined on the Virasoro–Bott group, by using the ...