The Lane Emden Equation was found in 1870 by astrophysicists Jonathan Homer Lane [1] and Robert Emden [2]. The theory of polytropic stellar structure was subsequently placed on a rigorous theoretical ...

We can set up an operation on this set which would take any of the two elements and replace them with their sum: A more interesting case (which we call a Wolfram model) is one where the set elements ...

The dissipative term in the Rayleigh oscillator contains a nonlinear (cubic) contribution. Usually, the coefficient, ε, of ...

Freakonomics co-author Stephen J. Dubner uncovers the hidden side of everything. Why is it safer to fly in an airplane than drive a car? How do we decide whom to marry? Why is the media so full of bad ...