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| Mirrors > Home > MPE Home > Th. List > brdom | Structured version Visualization version GIF version | ||
| Description: Dominance relation. (Contributed by NM, 15-Jun-1998.) |
| Ref | Expression |
|---|---|
| bren.1 | ⊢ 𝐵 ∈ V |
| Ref | Expression |
|---|---|
| brdom | ⊢ (𝐴 ≼ 𝐵 ↔ ∃𝑓 𝑓:𝐴–1-1→𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | bren.1 | . 2 ⊢ 𝐵 ∈ V | |
| 2 | brdomg 8955 | . 2 ⊢ (𝐵 ∈ V → (𝐴 ≼ 𝐵 ↔ ∃𝑓 𝑓:𝐴–1-1→𝐵)) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ (𝐴 ≼ 𝐵 ↔ ∃𝑓 𝑓:𝐴–1-1→𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 209 ∃wex 1806 ∈ wcel 2149 Vcvv 3463 class class class wbr 5113 –1-1→wf1 6534 ≼ cdom 8941 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-ext 2741 ax-sep 5261 ax-pr 5405 ax-un 7733 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-sb 2098 df-clab 2748 df-cleq 2761 df-clel 2844 df-ral 3086 df-rex 3096 df-rab 3424 df-v 3465 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4493 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-br 5114 df-opab 5178 df-xp 5668 df-rel 5669 df-cnv 5670 df-dm 5672 df-rn 5673 df-fn 6540 df-f 6541 df-f1 6542 df-dom 8945 |
| This theorem is referenced by: domen 8958 domtr 9004 sbthlem10 9084 sbthfilem 9182 ac10ct 10018 domtriomlem 10426 2ndcdisj 23582 birthdaylem3 27084 oldfib 28536 |
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