Don't worry, I think I've found the answer, the formatting within the paper made it look like a separate variable, but it's actually a product of two variables.
In an equation, there was an Ept (just those letters) embedded within that equation, does anyone know what it means? LaTeX code doesn't seem to be working either.
I given myself a little research project on Bull Graphs, I've been doing labeling problems for the last few days. I'm going to check my conjecture that Bull Graphs can be prime labeled tomorrow.
What area of Mathematics do you specialize in?
If I'm right, then the concept of parallel universes developed from Quantum Mechanics and Superposition of the states of a particle. I have considered Space-Time to be 4-dimensional (4D) with the fourth dimension being Time itself which can be manipulated like the other dimensions in theory.
I've been doing some light reading on Geometric Graph Theory, and it seem interesting to me. However, at the moment I've only managed to find a few Wikipedia articles and one .PDF of lecture notes.
I'm looking for something which is more complete, such as a book or a website for example...
You'll probably need to read the entire book, but personally I would recommend Real, Complex and Functional Analysis, Linear Algebra, Differential Equations and Vector Calculus. These are just assumptions based on reading about Quantum Mechanics.
I would study what your interested in, but I would suggest studying something which requires proof writing and some thought rather than just completing equations, since you'll eventually will need to start writing proofs at some point.