MyWikiBiz, Author Your Legacy — Tuesday November 26, 2024
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, 04:38, 6 December 2008
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| ==Logical Graph Sandbox== | | ==Logical Graph Sandbox== |
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− | More thoughts on Peirce's law … | + | ===More thoughts on Peirce's law=== |
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| 1-way version | | 1-way version |
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| : <math>ab \lor a = a</math> | | : <math>ab \lor a = a</math> |
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| + | ===The allegedly counterintuitive dichotomy law=== |
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| + | It is usually written in this form: |
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| + | : <math>(p \Rightarrow q) \lor (q \Rightarrow p)</math> |
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| + | Written as an order law, its sense is more sensible: |
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| + | : <math>(p \le q) \lor (q \le p)</math> |
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| + | Here it is in logical graphs: |
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| + | <pre> |
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| + | q o o p |
| + | | | |
| + | p o o q |
| + | | | |
| + | o o |
| + | \ / |
| + | o |
| + | | |
| + | @ = @ |
| + | </pre> |