News for hackers. Stuff that matters.

A comment on Why This Universe? New Calculation Suggests Our Cosmos Is Typical. Parent comment

Re:Why This Universe? New Calculation Suggests Our Cosmos Is... by pfortuny on Friday November 18, 2022 @10:54AM (#33656521)
Also keep in mind that everything assumes the equations are Lipschitz in order to guarantee uniqueness of the solution given specific initial conditions. But this is too optimistic.

y’=y^(1/3)

with y(0) = 0

has an infinite number of solutions.

[ Parent | on HN ]
Re:Why This Universe? New Calculation Suggests Our Cosmos Is... by constantcrying on Friday November 18, 2022 @11:35AM (#33657201)
It gets far worse if it is not an ODE, but a PDE, there a uniqueness criteria is somewhere between "for this PDE in this extremely special case with these extra assumptions ..." up to "?????".
[ Parent | on HN ]