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| Mirrors > Home > MPE Home > Th. List > brsdom | Structured version Visualization version GIF version | ||
| Description: Strict dominance relation, meaning "𝐵 is strictly greater in size than 𝐴". Definition of [Mendelson] p. 255. (Contributed by NM, 25-Jun-1998.) |
| Ref | Expression |
|---|---|
| brsdom | ⊢ (𝐴 ≺ 𝐵 ↔ (𝐴 ≼ 𝐵 ∧ ¬ 𝐴 ≈ 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-sdom 8988 | . . 3 ⊢ ≺ = ( ≼ ∖ ≈ ) | |
| 2 | 1 | eleq2i 2833 | . 2 ⊢ (〈𝐴, 𝐵〉 ∈ ≺ ↔ 〈𝐴, 𝐵〉 ∈ ( ≼ ∖ ≈ )) |
| 3 | df-br 5144 | . 2 ⊢ (𝐴 ≺ 𝐵 ↔ 〈𝐴, 𝐵〉 ∈ ≺ ) | |
| 4 | df-br 5144 | . . . 4 ⊢ (𝐴 ≼ 𝐵 ↔ 〈𝐴, 𝐵〉 ∈ ≼ ) | |
| 5 | df-br 5144 | . . . . 5 ⊢ (𝐴 ≈ 𝐵 ↔ 〈𝐴, 𝐵〉 ∈ ≈ ) | |
| 6 | 5 | notbii 320 | . . . 4 ⊢ (¬ 𝐴 ≈ 𝐵 ↔ ¬ 〈𝐴, 𝐵〉 ∈ ≈ ) |
| 7 | 4, 6 | anbi12i 628 | . . 3 ⊢ ((𝐴 ≼ 𝐵 ∧ ¬ 𝐴 ≈ 𝐵) ↔ (〈𝐴, 𝐵〉 ∈ ≼ ∧ ¬ 〈𝐴, 𝐵〉 ∈ ≈ )) |
| 8 | eldif 3961 | . . 3 ⊢ (〈𝐴, 𝐵〉 ∈ ( ≼ ∖ ≈ ) ↔ (〈𝐴, 𝐵〉 ∈ ≼ ∧ ¬ 〈𝐴, 𝐵〉 ∈ ≈ )) | |
| 9 | 7, 8 | bitr4i 278 | . 2 ⊢ ((𝐴 ≼ 𝐵 ∧ ¬ 𝐴 ≈ 𝐵) ↔ 〈𝐴, 𝐵〉 ∈ ( ≼ ∖ ≈ )) |
| 10 | 2, 3, 9 | 3bitr4i 303 | 1 ⊢ (𝐴 ≺ 𝐵 ↔ (𝐴 ≼ 𝐵 ∧ ¬ 𝐴 ≈ 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 ↔ wb 206 ∧ wa 395 ∈ wcel 2108 ∖ cdif 3948 〈cop 4632 class class class wbr 5143 ≈ cen 8982 ≼ cdom 8983 ≺ csdm 8984 |
| 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 2007 ax-8 2110 ax-9 2118 ax-ext 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1543 df-ex 1780 df-sb 2065 df-clab 2715 df-cleq 2729 df-clel 2816 df-v 3482 df-dif 3954 df-br 5144 df-sdom 8988 |
| This theorem is referenced by: sdomdom 9020 sdomnen 9021 0sdomg 9144 0sdomgOLD 9145 sdom0 9148 sdomdomtr 9150 domsdomtr 9152 domtriord 9163 canth2 9170 sdomdomtrfi 9241 domsdomtrfi 9242 php2 9248 php2OLD 9260 php3OLD 9261 nnsdomo 9270 1sdom2 9276 sdom1 9278 1sdom2dom 9283 nnsdomg 9335 nnsdomgOLD 9336 card2inf 9595 cardsdomelir 10013 cardsdom2 10028 fidomtri2 10034 cardmin2 10039 alephordi 10114 alephord 10115 isfin4p1 10355 isfin5-2 10431 canthnum 10689 canthwe 10691 canthp1 10694 gchdjuidm 10708 gchxpidm 10709 gchhar 10719 axgroth6 10868 hashsdom 14420 ruc 16279 iscard5 43549 |
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