theoretic,
theoretical concerned primarily with theories or hypotheses rather than practical considerations; "theoretical science"
notional -
being of the nature of a notion or concept; "a plan abstract and conceptional"; "to improve notional comprehension"; "a notional response to the question"
notional -
not based on fact; unreal; "the falsehood about some fanciful secret treaties"- F.D.Roosevelt; "a small child's imaginary friends"; "to create a notional world for oneself"