X-Nico

2 unusual facts about Singular solution


Singular solution

Solutions which are singular in the sense that the initial value problem fails to have a unique solution need not be singular functions.

A singular solution ys(x) of an ordinary differential equation is a solution that is singular or one for which the initial value problem (also called the Cauchy problem by some authors) fails to have a unique solution at some point on the solution.



see also

Tarski's exponential function problem

This conjecture states that there is an effective procedure that, given n ≥ 1 and exponential polynomials in n variables with integer coefficients f1,..., fn, g, produces an integer η ≥ 1 that depends on n, f1,..., fn, g, and such that if α ∈ Rn is a non-singular solution of the system