The word "filtered" seems to be much more common than "filtrated". I know that these words derive from "to filter" and "to filtrate". What is the difference in meaning between these two verbs?
The context I have in mind is a mathematical one. Here the words "filtration" and "filter" have fixed and different meanings.
In addition, there is an invariant for certain objects which are endowed with a filtration (technically this isn't accurate but let's suppose so). This invariant is called "filtrated K-theory" by several people. Yet, some people insist that it should be called "filtered K-theory" because filtrated is hardly a word or at least sounds weird and artificial. Can native speakers confirm this, or would you go for the more logical(?) "filtrated"?