Logical System gentzen 8/29/06 Tutorial 3 The Main Connective Applet Your browser does not support html5 video. Tutorial 3 The Propositional Truth Applet Your browser does not support html5 video. Tutorial 3 The Truth Table Applet Your browser does not support html5 video. Book traversal links for Help with Tutorial 3, if you need it ‹ Tutorial 3: Propositions and Truth Up Supplementary: The Paradoxes of Material Implication ›