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4 cards from this section. Quick, good the night before a test.
Define 'satisfiable' in your own words.
Think about what it means for a statement to be true or false.
What is the opposite of a satisfiable proposition?
Consider what it means for something never to be true.
What does it mean for a proposition to be 'satisfiable'?
Consider the conditions of truth for the proposition.
True or False: An unsatisfiable proposition has no truth assignments that make it true.
Think about what 'unsatisfiable' means in context.
Given the expression (p AND (q OR r)), convert it to CNF and explain your steps.
Assess if any rules apply that may change the expression's format significantly.
How would you encode a Sudoku puzzle as a CNF? Explain the logical structure and possible variables.
Think about how each condition narrows down your options and must be captured logically.
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