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| Mirrors > Home > ILE Home > Th. List > Mathboxes > ax-bdel | Unicode version | ||
| Description: An atomic formula is bounded (membership predicate). (Contributed by BJ, 3-Oct-2019.) |
| Ref | Expression |
|---|---|
| ax-bdel |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | vx |
. . 3
| |
| 2 | vy |
. . 3
| |
| 3 | 1, 2 | wel 2210 |
. 2
|
| 4 | 3 | wbd 17060 |
1
|
| Colors of variables: wff set class |
| This axiom is used by: bdcv 17096 bdop 17123 bdcuni 17124 bdcint 17125 bdcriota 17131 bj-nalset 17143 bj-inex 17155 bj-axun2 17163 bj-nnelirr 17201 |
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