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bio website scholarpedia.org/article/…
location Arizona
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visits member for 1 year, 7 months
seen Apr 8 at 1:47

Author of the Wikipedia pages Kepler's Equation, and Radial Trajectory. Assistant editor at Scholarpedia. Google+ profile.


May
6
comment Can this gravitational field differential equation be solved, or does it not show what I intended?
The correct differential equation is: $ - \frac{G M m}{r^2} = \mu \ddot r $ where $ \mu = \frac{M m}{M+m} $ is the reduced mass.
May
1
comment Can this gravitational field differential equation be solved, or does it not show what I intended?
The correct equation is: $$ - \frac{G M m}{r^2} = \frac{M}{M+m} m \ddot r $$
Mar
30
comment Are constant numbers (rank-0 tensors that are fixed) considered as symmetric tensors?
The Kronecker delta is a rank 2 tensor.