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Tautologies, The Basic Logical Laws, Distributive Laws

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Modern Algebra
Logic (XV)
Tautologies
The Laws of Logic
The Basic Logical Laws
Distributive Laws (II)

Prove that p disjunction (q conjunction r) <=> (p disjunction q) conjunction (p disjunction r) is a tautology.

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It is proven that p disjunction (q conjunction r) <=> (p disjunction q) conjunction (p disjunction r) is a tautology. The solution is detailed and well presented.

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