What is the Set Union formula for A ∪ B = A' ∪ B?

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SUMMARY

The discussion centers on the Set Union formula, specifically addressing the identity (A ∪ B)' = A' ∩ B'. The correct formulation is established as (A ∪ B)' = A' ∪ B', clarifying a common misconception. Participants emphasize the importance of clear communication when posing mathematical questions in forums. The correction provided highlights the significance of understanding set operations in mathematical logic.

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  • Familiarity with De Morgan's laws in logic.
  • Basic knowledge of mathematical notation and symbols.
  • Experience with logical proofs and identities.
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khd_saleem
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(a u b)'=a' u b'
 
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khd_saleem said:
(a u b)'=a' u b'

Wrong: (a∪b)' = a'∩b'
 
khd_saleem said:
(a u b)'=a' u b'

Welcome to the PF.

Please make an effort to ask clear questions when you start a thread here at the PF. It is not clear at all if you have a question, and what it would be. You did get a nice correction though.
 

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