'Mathematically' definitions:

Definition of 'mathematically'

From: WordNet
adverb
With respect to mathematics; "mathematically impossible"

Definition of 'Mathematically'

From: GCIDE
  • 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]