Floating quantifiers are quantifiers that can move away from the corresponding noun, such as "each" in "The boys hit each other" where it modifies "The boys". I am interested in prepositions in these bipartite reciprocal constructions, as in "They followed each others onto the stage" or "They waited for each other." These constructions are comparable to "They waited, each for the other." In this last example, the preposition is near its complement "the other", but in the earlier examples it is not.
Is there a term for these kind of "floating prepositions"? This term does not yield any results on Google Scholar.