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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 8930 | . 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 206 ∃wex 1779 ∈ wcel 2109 Vcvv 3447 class class class wbr 5107 –1-1→wf1 6508 ≼ cdom 8916 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-ext 2701 ax-sep 5251 ax-nul 5261 ax-pr 5387 ax-un 7711 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-sb 2066 df-clab 2708 df-cleq 2721 df-clel 2803 df-ral 3045 df-rex 3054 df-rab 3406 df-v 3449 df-dif 3917 df-un 3919 df-in 3921 df-ss 3931 df-nul 4297 df-if 4489 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4872 df-br 5108 df-opab 5170 df-xp 5644 df-rel 5645 df-cnv 5646 df-dm 5648 df-rn 5649 df-fn 6514 df-f 6515 df-f1 6516 df-dom 8920 |
| This theorem is referenced by: domen 8933 domtr 8978 sbthlem10 9060 sbthfilem 9162 1sdomOLD 9196 ac10ct 9987 domtriomlem 10395 2ndcdisj 23343 birthdaylem3 26863 |
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