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| |} | | |} |
| | | |
− | <pre>
| + | In the interpretation of the cactus language for propositional logic that we are using here, an expression of the form <math>\texttt{(p(q))}</math> expresses a ''conditional'', an ''implication'', or an ''if-then'' proposition, commonly read in one of the following ways: |
− | In the interpretation of the cactus language for propositional logic | + | |
− | that we are using here, an expression of the form "(p (q))" expresses | + | {| align="center" cellpadding="8" width="90%" |
− | a conditional, an implication, or an if-then proposition, commonly read | + | | |
− | as: "not p without q", "if p then q", "p implies q", "p => q", and so on.
| + | <math>\begin{array}{l} |
| + | \operatorname{not}~ p ~\operatorname{without}~ q |
| + | \\[4pt] |
| + | p ~\operatorname{implies}~ q |
| + | \\[4pt] |
| + | \operatorname{if}~ p ~\operatorname{then}~ q |
| + | \\[4pt] |
| + | p \Rightarrow q |
| + | \end{array}</math> |
| + | |} |
| | | |
− | A text string expression of the form "(p (q))" corresponds | + | A text string expression of the form <math>\texttt{(p(q))}</math> corresponds to a graph-theoretic data-structure of the following form: |
− | to a graph-theoretic data-structure of the following form: | |
| | | |
| + | <pre> |
| o---------------------------------------o | | o---------------------------------------o |
| | | | | | | |
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| | ( p ( q )) | | | | ( p ( q )) | |
| o---------------------------------------o | | o---------------------------------------o |
| + | </pre> |
| | | |
| Taken together, the Mediate Conditions state the following: | | Taken together, the Mediate Conditions state the following: |
| | | |
| + | <pre> |
| If M at p_0 is in state q_#, then M at p_1 is in state q_#, and | | If M at p_0 is in state q_#, then M at p_1 is in state q_#, and |
| If M at p_0 is in state q_*, then M at p_1 is in state q_*, and | | If M at p_0 is in state q_*, then M at p_1 is in state q_*, and |