Flash-based interactive example of Venn diagram-enhanced categorical reasoning. This one is of O-type (Particular Negative) contraposition. Does ‘Some cats are not felines’ imply ‘Some non-felines are not non-cats’? This movie requires Flash …
Flash-based interactive example of Venn diagram-enhanced categorical reasoning. This one is of E-type (Universal Negative) contraposition. Does ‘No cats are felines’ imply ‘No non-cats are non-felines’? This movie requires Flash Player 9 …
Flash-based interactive example of Venn diagram-enhanced categorical reasoning. This one is of I-type (Particular Affirmative) contraposition. Does ‘Some cats are felines’ imply ‘Some non-cats are non-felines’? This movie requires Flash Player 9 …
Flash-based interactive example of Venn diagram-enhanced categorical reasoning. This one is of A-type (Universal Positive) contraposition. Does ‘A cats are felines’ imply ‘All non-cats are non-felines’? This movie requires Flash Player 9 …
Flash-based interactive example of Venn diagram-enhanced categorical reasoning. This one is of O-type (Particular Negative) obversion. Does ‘Some cats are not felines’ imply ‘Some cats are non-felines’? This movie requires Flash Player …
Flash-based interactive example of Venn diagram-enhanced categorical reasoning. This one is of I-type (Particular Affirmative) obversion. Does ‘Some cats are felines’ imply ‘Some cats are not non-felines’? This movie requires Flash Player …
Flash-based interactive example of Venn diagram-enhanced categorical reasoning. This one is of E-type (Universal Negative) obversion. Does ‘All cats are felines’ imply ‘All cats are non-felines’? This movie requires Flash Player 9 …
Flash-based interactive example of Venn diagram-enhanced categorical reasoning. This one is of O-type (Particular Negative) conversion. Does ‘Some cats are not felines’ imply ‘Some felines are not cats’? This movie requires Flash …
Flash-based interactive example of Venn diagram-enhanced categorical reasoning. This one is of I-type (Particular Affirmative) conversion. Does ‘Some cats are felines’ imply ‘Some felines are cats’? This movie requires Flash Player 9 …
Flash-based interactive example of Venn diagram-enhanced categorical reasoning. This one is of E-type (Universal Negative) conversion. Does ‘No cats are felines’ imply ‘No felines are cats’? This movie requires Flash Player 9 …
A simple interactive truth table for the exclusive or: either or and not both, or 'X-Or'. The symbol, as...
A simple interactive truth table for the Peirce stroke, or 'Not-Or'.
A simple interactive truth table for the Sheffer stroke, or 'Not-And'.
A simple interactive truth table for proving the validity of the Dilemma.
A simple interactive truth table for proving the invalidity of the two different fallacious forms of argumentation that look...
A simple interactive truth table for proving the validity of the two different forms of Disjunctive Syllogism:
A simple interactive truth table for proving the validity of Hypothetical Syllogism
A simple interactive truth table for conjunction. Click ‘start’, then click...
A simple interactive truth table for conjunction. Click ‘start’, then click...
A simple interactive truth table for conjunction. Click ‘start’, then click...
A simple interactive truth table for conjunction. Click ‘start’, then click...
A simple interactive truth table for negation.
A simple interactive truth table for proving the validity of Affirming the Consequent
A simple interactive truth table for proving the validity of Denying The Antecedent