Comment Comment by jason_adleberg From Sentence 5 of Example 1.1:"The symmetry is a smooth (differentiable to all orders) invertible transformation mapping solutions of the ODE to solutions of the ^ODE^. Invertible means the Jacobian is nonzero: x'x y'y - x'y y'x != 0"Yeah, understood about 5% of that. parent jason_adleberg 14 years ago
"The symmetry is a smooth (differentiable to all orders) invertible transformation mapping solutions of the ODE to solutions of the ^ODE^. Invertible means the Jacobian is nonzero: x'x y'y - x'y y'x != 0"
Yeah, understood about 5% of that.