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Mirrors > Home > MPE Home > Th. List > co | Structured version Visualization version GIF version |
Description: Extend class notation to include the value of an operation 𝐹 (such as +) for two arguments 𝐴 and 𝐵. Note that the syntax is simply three class symbols in a row surrounded by parentheses. Since operation values are the only possible class expressions consisting of three class expressions in a row surrounded by parentheses, the syntax is unambiguous. (For an example of how syntax could become ambiguous if we are not careful, see the comment in cneg 10607.) |
Ref | Expression |
---|---|
cA | class 𝐴 |
cB | class 𝐵 |
cF | class 𝐹 |
Ref | Expression |
---|---|
co | class (𝐴𝐹𝐵) |
Colors of variables: wff setvar class |
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