Mereology http://plato.stanford.edu/entries/mereology/
The theory of parthood relations: of the relations of part to whole and the relations of part to part within a whole; from the Stanford Encyclopedia by Achille Varzi.
Philosophical Apologetic http://www.philosophical-apologetic.com
A philosophical apologetic, or argument from pure reason in answer to Immanuel Kant's challenge. Pure Philosophical Argument for the Existence of a Supreme Being (consisting of five a priori principles).
Causality