Second order Poincare-Hopf

The second order curvature seen last time is the index expectation of a second order Poincare-Hopf theorem. This is a very general frame work leading to many different Poincare-Hopf Statements.
The video footage at the beginning and end was taken last sunday (I was knocked out with a cough for the second part of the week). Was one flight from Arlington, Medford, Winchester reaching Horn Pond in Woburn and back. I like this part also as we actually fly for several miles along the route of the MIddle sex canal.