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Related theorems GIF version |
| Description: Membership in a range. |
| Ref | Expression |
|---|---|
| elrn.1 | ⊢ A ∈ V |
| Ref | Expression |
|---|---|
| elrn2 | ⊢ (A ∈ ran B ↔ ∃x xBA) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elrn.1 | . . 3 ⊢ A ∈ V | |
| 2 | 1 | elrn 2562 | . 2 ⊢ (A ∈ ran B ↔ ∃x〈x, A〉 ∈ B) |
| 3 | df-br 2063 | . . 3 ⊢ (xBA ↔ 〈x, A〉 ∈ B) | |
| 4 | 3 | biex 733 | . 2 ⊢ (∃x xBA ↔ ∃x〈x, A〉 ∈ B) |
| 5 | 2, 4 | bitr4 154 | 1 ⊢ (A ∈ ran B ↔ ∃x xBA) |
| Colors of variables: wff set class |
| Syntax hints: ↔ wb 127 ∃wex 678 ∈ wcel 1092 Vcvv 1348 〈cop 1810 class class class wbr 2054 ran crn 2411 |
| This theorem is referenced by: dmcosseq 2572 fvelrn 2883 fvclss 2907 cbvfo 2923 erref 3212 erdmrn 3213 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-10 800 ax-11 801 ax-12 802 ax-13 804 ax-14 805 ax-16 922 ax-17 925 ax-ext 1074 ax-rep 1075 ax-pow 1077 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-ex 679 df-sb 853 df-clab 1093 df-cleq 1097 df-clel 1099 df-v 1349 df-dif 1489 df-un 1490 df-in 1491 df-ss 1492 df-nul 1708 df-pw 1799 df-sn 1811 df-pr 1812 df-op 1815 df-br 2063 df-opab 2098 df-cnv 2426 df-dm 2428 df-rn 2429 |