Changes

A '''logical [[graph (mathematics)|graph]]''' is a special type of [[graph theory|graph-theoretic]] structure in any one of several systems of graphical [[syntax]] that [[Charles Sanders Peirce]] developed for [[logic]].

A '''logical graph''' is a [[graph theory|graph-theoretic]] structure in one of the systems of graphical [[syntax]] that [[Charles Sanders Peirce]] developed for [[logic]].

In his papers on ''[[qualitative logic]]'', ''[[entitative graph]]s'', and ''[[existential graph]]s'', Peirce developed several versions of a graphical [[formal system|formalism]], or a graph-theoretic [[formal language]], designed to be interpreted for logic.

In his papers on ''[[qualitative logic]]'', ''[[entitative graph]]s'', and ''[[existential graph]]s'', Peirce developed several versions of a graphical [[formal system|formalism]], or a graph-theoretic [[formal language]], designed to be interpreted for logic.