mathematically

from WordNet (r) 3.0 (2006)

mathematically
    adv 1: with respect to mathematics; "mathematically impossible"

from The Collaborative International Dictionary of English v.0.48

Mathematical \Math`e*mat"ic*al\, a. [See {Mathematic}.]
   Of or pertaining to mathematics; according to mathematics;
   hence, theoretically precise; accurate; as, mathematical
   geography; mathematical instruments; mathematical exactness.
   -- {Math`e*mat"ic*al*ly}, adv.
   [1913 Webster]