What is the Negation of P v Q -> R?

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Homework Help Overview

The discussion revolves around the logical expression P v Q -> R and its negation. Participants are exploring the implications of negating this statement within the context of propositional logic.

Discussion Character

  • Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants attempt to express the negation of the original statement and explore different interpretations of the components involved. There is a focus on the transformation of the logical expression and the correct application of logical operators.

Discussion Status

Some participants have provided insights into the negation process, while others have pointed out necessary adjustments in the definitions used. The conversation reflects a collaborative effort to clarify the logical structure without reaching a definitive conclusion.

Contextual Notes

There appears to be some confusion regarding the definitions of S and the correct interpretation of the original statement, which may affect the negation process being discussed.

chuy52506
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Homework Statement


P v Q -> R


Homework Equations


Negation of the statement


The Attempt at a Solution


P v Q ^(and) ~(not)R
 
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let S = (P and Q )

then negating
S -> R

gives
S and (~R)

so you have
(P or Q) and (~R)
 
lanedance said:
let S = (P and Q )
One thing needs an adjustment.
Let S = (P or Q)
In the OP, the statement was P v Q -> R, which is (P OR Q) ==> R

lanedance said:
then negating
S -> R

gives
S and (~R)

so you have
(P or Q) and (~R)
 
Cheers, mis-editing ;)
 

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