Corollary: Commutativity of Equivalence

(related to Definition: Equivalence)

The equivalence operation "$\Leftrightarrow$" is commutative, i.e. $x \Leftrightarrow y=y \Leftrightarrow x$ for all possible interpretations $I$ and valuation functions $[[]]_I$ of propositions \(x,y.\).

Proofs: 1


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References

Bibliography

  1. Mendelson Elliott: "Theory and Problems of Boolean Algebra and Switching Circuits", McGraw-Hill Book Company, 1982