Furthermore without going into the actual detail of the mathematics and keeping on the general format (because the mathematics not clear enough to go into any detail). You seem to missing vast amounts for a proof, I see no lemmas, remarks, theorems, enough references etc.. There is not a clear enough demonstration of your mathematical steps, we should see everything step by step, detailing what you are doing in simple statements. Often you make quite significant changes and assume people know how you’ve changed it even though you’ve only given some vague description of what is going on. For example, you say in it: “We now by the existence theorem for differential equations that given y``=F(x,y,y`)
where `means derivative respect to x,the differential equation will have a solution if F
and the first partial derivative of F respect to y are continuous, so in our case
F(x,y,y`)=AV(x)y+By with A and B constants ,so the potential is continuous
everywhere but perhaps a number of points with zero measure.”That’s only 1 sentence!“We now by”, “for differential equations”, “that given y” and “where `means derivative respect to x”, doesn’t make any grammatical sense. You say “the existence theorem”, there are many existence theorems, which one is it? Make a reference for it, show that your equation sufficiently satisfies the conditions given in this existence theorem. Stating something in words like “if F and the first partial derivative of F respect to y are continuous” doesn’t make much sense when you could write it mathematically:
\text{If} \quad F \quad \text{and} \quad \frac{\partial F}{\partial y} \quad \text{are continuous}
And that then is a lot more clear, but then you haven’t bothered to prove that they are continuous or show sufficient conditions exist for one to see they are continuous.
In fact, I could point out problems with this one sentence all day, but that would really be a waste of time. What I do hope is that this shows you what kind of rigor and clarity is needed for a mathematical proof.