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| Mirrors > Home > NFE Home > Th. List > wxo | Unicode version | ||
| Description: Extend wff definition to include exclusive disjunction ('xor'). | 
| Ref | Expression | 
|---|---|
| wph | 
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| wps | 
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| Ref | Expression | 
|---|---|
| wxo | 
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| Colors of variables: wff setvar class | 
| Copyright terms: Public domain | W3C validator |