| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 9014 | . . 3 ⊢ ≺ = ( ≼ ∖ ≈ ) | |
| 2 | 1 | eleq2i 2856 | . 2 ⊢ (〈𝐴, 𝐵〉 ∈ ≺ ↔ 〈𝐴, 𝐵〉 ∈ ( ≼ ∖ ≈ )) |
| 3 | df-br 5109 | . 2 ⊢ (𝐴 ≺ 𝐵 ↔ 〈𝐴, 𝐵〉 ∈ ≺ ) | |
| 4 | df-br 5109 | . . . 4 ⊢ (𝐴 ≼ 𝐵 ↔ 〈𝐴, 𝐵〉 ∈ ≼ ) | |
| 5 | df-br 5109 | . . . . 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 4052 | . . 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 2147 ∖ cdif 4048 〈cop 4840 class class class wbr 5108 ≈ cen 9008 ≼ cdom 9009 ≺ csdm 9010 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1573 df-ex 1813 df-sb 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-v 3456 df-dif 4050 df-br 5109 df-sdom 9014 |
| This theorem is used by: sdomdom 9045 sdomnen 9046 0sdomg 9163 sdom0 9166 sdomdomtr 9167 domsdomtr 9169 domtriord 9180 canth2 9187 sdomdomtrfi 9254 domsdomtrfi 9255 php2 9261 nnsdomo 9272 1sdom2 9277 sdom1 9279 1sdom2dom 9283 nnsdomg 9329 card2inf 9586 cardsdomelir 10091 cardsdom2 10108 fidomtri2 10114 cardmin2 10119 alephordi 10192 alephord 10193 isfin4p1 10432 isfin5-2 10508 canthnum 10773 canthwe 10775 canthp1 10778 gchdjuidm 10792 gchxpidm 10793 gchhar 10803 axgroth6 10952 hashsdom 14566 ruc 16455 iscard5 44798 |
| Copyright terms: Public domain | W3C validator |