Tests which were done on an ellipse, a rectangle and the unit square, showed a similar behaviour as discussed above.
As s 1, the cross becomes an ellipse and corresponding eigenvalues move toward the lower hyperbola.
Around such a point, we fit an ellipse to the full phase-space density variation at the maximum phase-space gradient.
In condition 3 they provided word list responses (such as square red ellipse blue launch).
The forcing was turned off and the pressure set equal to the harmonic function r2 cos 2 on the boundary of a 2:1 ellipse.
The boundary in a plane is an ellipse.
Note that a rotation matrix denotes the orientation of an ellipse.
The image has been rotated to make the major axis of strain ellipse vertical.
