Release Message:  If the ordinal numbers formed a set, it would be an ordinal number that is smaller than itself. Authored by Cesare Burali-Forti.

Description:  In set theory, a field of mathematics, the Burali-Forti paradox demonstrates that naively constructing "the set of all ordinal numbers" leads to a contradiction and therefore shows an antinomy in a system that allows its construction. It is named after Cesare Burali-Forti, who discovered it in 1897. (Naive set theory)