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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 8984 | . . 3 ⊢ ≺ = ( ≼ ∖ ≈ ) | |
| 2 | 1 | eleq2i 2852 | . 2 ⊢ (〈𝐴, 𝐵〉 ∈ ≺ ↔ 〈𝐴, 𝐵〉 ∈ ( ≼ ∖ ≈ )) |
| 3 | df-br 5103 | . 2 ⊢ (𝐴 ≺ 𝐵 ↔ 〈𝐴, 𝐵〉 ∈ ≺ ) | |
| 4 | df-br 5103 | . . . 4 ⊢ (𝐴 ≼ 𝐵 ↔ 〈𝐴, 𝐵〉 ∈ ≼ ) | |
| 5 | df-br 5103 | . . . . 5 ⊢ (𝐴 ≈ 𝐵 ↔ 〈𝐴, 𝐵〉 ∈ ≈ ) | |
| 6 | 5 | notbii 323 | . . . 4 ⊢ (¬ 𝐴 ≈ 𝐵 ↔ ¬ 〈𝐴, 𝐵〉 ∈ ≈ ) |
| 7 | 4, 6 | anbi12i 640 | . . 3 ⊢ ((𝐴 ≼ 𝐵 ∧ ¬ 𝐴 ≈ 𝐵) ↔ (〈𝐴, 𝐵〉 ∈ ≼ ∧ ¬ 〈𝐴, 𝐵〉 ∈ ≈ )) |
| 8 | eldif 4048 | . . 3 ⊢ (〈𝐴, 𝐵〉 ∈ ( ≼ ∖ ≈ ) ↔ (〈𝐴, 𝐵〉 ∈ ≼ ∧ ¬ 〈𝐴, 𝐵〉 ∈ ≈ )) | |
| 9 | 7, 8 | bitr4i 281 | . 2 ⊢ ((𝐴 ≼ 𝐵 ∧ ¬ 𝐴 ≈ 𝐵) ↔ 〈𝐴, 𝐵〉 ∈ ( ≼ ∖ ≈ )) |
| 10 | 2, 3, 9 | 3bitr4i 306 | 1 ⊢ (𝐴 ≺ 𝐵 ↔ (𝐴 ≼ 𝐵 ∧ ¬ 𝐴 ≈ 𝐵)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 ↔ wb 209 ∧ wa 401 ∈ wcel 2144 ∖ cdif 4044 〈cop 4834 class class class wbr 5102 ≈ cen 8978 ≼ cdom 8979 ≺ csdm 8980 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-ext 2732 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1572 df-ex 1812 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 df-v 3452 df-dif 4046 df-br 5103 df-sdom 8984 |
| This theorem is used by: sdomdom 9015 sdomnen 9016 0sdomg 9133 sdom0 9136 sdomdomtr 9137 domsdomtr 9139 domtriord 9150 canth2 9157 sdomdomtrfi 9224 domsdomtrfi 9225 php2 9231 nnsdomo 9242 1sdom2 9247 sdom1 9249 1sdom2dom 9253 nnsdomg 9299 card2inf 9556 cardsdomelir 10061 cardsdom2 10076 fidomtri2 10082 cardmin2 10087 alephordi 10160 alephord 10161 isfin4p1 10400 isfin5-2 10476 canthnum 10741 canthwe 10743 canthp1 10746 gchdjuidm 10760 gchxpidm 10761 gchhar 10771 axgroth6 10920 hashsdom 14532 ruc 16420 iscard5 44674 |
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