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| Mirrors > Home > ILE Home > Th. List > elrn | GIF version | ||
| Description: Membership in a range. (Contributed by NM, 2-Apr-2004.) |
| Ref | Expression |
|---|---|
| elrn.1 | ⊢ 𝐴 ∈ V |
| Ref | Expression |
|---|---|
| elrn | ⊢ (𝐴 ∈ ran 𝐵 ↔ ∃𝑥 𝑥𝐵𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elrn.1 | . . 3 ⊢ 𝐴 ∈ V | |
| 2 | 1 | elrn2 4920 | . 2 ⊢ (𝐴 ∈ ran 𝐵 ↔ ∃𝑥〈𝑥, 𝐴〉 ∈ 𝐵) |
| 3 | df-br 4045 | . . 3 ⊢ (𝑥𝐵𝐴 ↔ 〈𝑥, 𝐴〉 ∈ 𝐵) | |
| 4 | 3 | exbii 1628 | . 2 ⊢ (∃𝑥 𝑥𝐵𝐴 ↔ ∃𝑥〈𝑥, 𝐴〉 ∈ 𝐵) |
| 5 | 2, 4 | bitr4i 187 | 1 ⊢ (𝐴 ∈ ran 𝐵 ↔ ∃𝑥 𝑥𝐵𝐴) |
| Colors of variables: wff set class |
| Syntax hints: ↔ wb 105 ∃wex 1515 ∈ wcel 2176 Vcvv 2772 〈cop 3636 class class class wbr 4044 ran crn 4676 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 711 ax-5 1470 ax-7 1471 ax-gen 1472 ax-ie1 1516 ax-ie2 1517 ax-8 1527 ax-10 1528 ax-11 1529 ax-i12 1530 ax-bndl 1532 ax-4 1533 ax-17 1549 ax-i9 1553 ax-ial 1557 ax-i5r 1558 ax-14 2179 ax-ext 2187 ax-sep 4162 ax-pow 4218 ax-pr 4253 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-nf 1484 df-sb 1786 df-eu 2057 df-mo 2058 df-clab 2192 df-cleq 2198 df-clel 2201 df-nfc 2337 df-v 2774 df-un 3170 df-in 3172 df-ss 3179 df-pw 3618 df-sn 3639 df-pr 3640 df-op 3642 df-br 4045 df-opab 4106 df-cnv 4683 df-dm 4685 df-rn 4686 |
| This theorem is referenced by: dmcosseq 4950 rnco 5189 dffo4 5728 rntpos 6343 fclim 11605 dvfgg 15160 |
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