A fendument is a closed system. It does not interact with external entities, nor do external entities have an effect upon it. Its purpose is to embody a branch of abstract logic, and the term fendumentology has been coined to represent the investigation of changes that can occur within a fendument.
As to the word fendument itself, there are assorted views on the origins of the term, most of which are perfectly acceptable. Some are of the opinion that it is merely a variation of the word fundamental, highlighting its independent nature; i.e. the fact that a fendument is the base level upon which we build all further study. Others note the word stem fend, indicating different aspects of its independence; i.e. it fends for internal entities and fends off external entities. When combined with the word domain we are then referring to an independent environment. Another common interpretation is that the entire word is derived from feigned domain, indicating a simulated environment or sphere of influence; this allows us to interpret the abstract.
By its very definition, there are numerous types of fendument, and undoubtedly more may be introduced over time. Most study has been regarding the periclentious fendument, with chronomodular and stasic fenduments also worthy of mention. These are classified as the greater prelentic fenduments. Little work has been done on the melanthic fendument or the numerous lesser prelentic variations.
The contents of a fendument are far from static and there are many interactions therein that prompt investigation.
The etymology of periclentious indicates peri- i.e. a prefix denoting something that surrounds an object, an example being perimeter. The next part of the word denotes the abbreviation CLENT, denoting controlled logical events: non time-based.
Stasic fenduments are heavily subject to spatial constraints and chronomodular fenduments are heavily subject to time constraints. This document is more concerned with pure fendumentology (i.e. the emphasis on logical abstraction) within the prelentic class, so we wish to avoid such constraints. This is our reason for restricting our investigations to the periclentious fendument.