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11 lines
222 B
11 lines
222 B
\item \self Given is the following formula in predicate logic
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$$\phi = \exists x \forall y \Bigl(
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\bigl(
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P(x,y) \implies Q(x,y)
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\bigr)
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\vee
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\bigl(
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P(y, x) \implies R(x,y)
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\bigr)
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\Bigr). $$
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Draw the syntax tree for $\phi$.
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