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| Mirrors > Home > MPE Home > Th. List > we0 | Structured version Visualization version GIF version | ||
| Description: Any relation is a well-ordering of the empty set. (Contributed by NM, 16-Mar-1997.) |
| Ref | Expression |
|---|---|
| we0 | ⊢ 𝑅 We ∅ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fr0 5637 | . 2 ⊢ 𝑅 Fr ∅ | |
| 2 | so0 5605 | . 2 ⊢ 𝑅 Or ∅ | |
| 3 | df-we 5614 | . 2 ⊢ (𝑅 We ∅ ↔ (𝑅 Fr ∅ ∧ 𝑅 Or ∅)) | |
| 4 | 1, 2, 3 | mpbir2an 724 | 1 ⊢ 𝑅 We ∅ |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∅c0 4282 Or wor 5566 Fr wfr 5609 We wwe 5611 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2734 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-clab 2741 df-cleq 2754 df-clel 2837 df-ne 2958 df-ral 3079 df-rex 3089 df-rab 3415 df-v 3455 df-dif 3905 df-un 3907 df-ss 3919 df-nul 4283 df-if 4486 df-sn 4588 df-pr 4590 df-op 4594 df-br 5108 df-po 5567 df-so 5568 df-fr 5612 df-we 5614 |
| This theorem is used by: ord0 6416 cantnf0 9657 cantnf 9675 wemapwe 9679 ltweuz 14027 |
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