Who Came Up With The Square Of Opposition And The Names Of The A E I/o Propositions?
Who Came Up With The Square Of Opposition And The Names Of The A E I/o Propositions? Modern squares of opposition In the 19th century, George Boole (November 1815 – 8 December 1864) argued for requiring existential import on both terms in particular claims (I and O), but allowing all terms of universal claims (A