A description of the four versions of the Change of Quantifier Rule in Predicate Calculus (100 Days of Logic).
Read moreAn explication of the fifth rule for validity of categorical syllogisms dealing with the difference between conditionally valid and unconditionally valid syllogisms (90 Second Philosophy & 100 Days of Logic).
Read moreA description of Rule IV for validity for categorical syllogisms that negative conclusions must be drawn from negative premises and negative premises must illicit negative conclusions.(90 Second Philosophy & 100 Days of Logic)
Read moreAn explanation of the logical fallacy known as exclusive premises, in which a categorical syllogism breaks the third rule of validity and has two negative premises (Fallacy February & 100 Days of Logic).
Read moreAn explanation of the third rule of validity for categorical syllogisms, that at least one premise must be affirmative (90 Second Philosophy & 100 Days of Logic).
Read moreA description of the second rule of validity for categorical syllogisms that the terms that are distributed in the conclusion must be distributed in the premises (90 Second Philosophy & 100 Days of Logic)
Read moreAn explanation of the first rule of validity for categorical, that the middle term must be distributed (90 Second Philosophy & 100 Days of Logic)
Read moreA description of the fallacy of Hasty Generalization also known as the opposite of the Fallacy of Accident (90 Second Philosophy & Fallacy February).
Read moreThe answers to the second round of Problems for the Rules of Replacement. These can be solved using the 18 Rules of Inference (90 Second Philosophy & 100 Days of Logic).
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