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| Mirrors > Home > MPE Home > Th. List > Mathboxes > wirreflexive | Structured version Visualization version GIF version | ||
| Description: Extend wff definition to include "Irreflexive" applied to a class, which is true iff class R is an irreflexive relation over the set A. See df-irreflexive 49636. (Contributed by David A. Wheeler, 1-Dec-2019.) |
| Ref | Expression |
|---|---|
| cA | class 𝐴 |
| cR | class 𝑅 |
| Ref | Expression |
|---|---|
| wirreflexive | wff 𝑅Irreflexive𝐴 |
| Colors of variables: wff setvar class |
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