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Mirrors > Home > MPE Home > Th. List > wbr | Structured version Visualization version Unicode version |
Description: Extend wff notation to include the general binary relation predicate. Note that the syntax is simply three class symbols in a row. Since binary relations are the only possible wff expressions consisting of three class expressions in a row, the syntax is unambiguous. (For an example of how syntax could become ambiguous if we are not careful, see the comment in cneg 9887.) |
Ref | Expression |
---|---|
cA | |
cB | |
cR |
Ref | Expression |
---|---|
wbr |
Colors of variables: wff setvar class |
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