1) The person is not a mathematician, but an Electrical Engineer
2) He hasn't published any paper in pure mathematics
3) The paper is not written in LaTeX
4) He references wikipedia and mathworld
These four points together make me doubt very much that the proof is valid. Of course, maybe the proof is valid, but I'm really not going to bother with reading it until a professional journal publishes it.
The above 4 points are usually enough to separate a genuine paper from a false paper.