Facts
(Mathematical Results)

Facts in Mathematics are propositions.

a(b + c) = ab + ac

H isa subgroup of G
=> (a in G & b in G => ab in G)
Facts in mathematics are propositions which have been proved as theorems. For example in algebra the distributive law: a(b + c) = ab + ac An example from Group theory: If H is a subgroup of G, then it follows that if a and b are in G then ab is also in G.