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| Mirrors > Home > MPE Home > Th. List > elimasng | Structured version Visualization version GIF version | ||
| Description: Membership in an image of a singleton. (Contributed by Raph Levien, 21-Oct-2006.) TODO: replace existing usages by usages of elimasng1 6061, remove, and relabel elimasng1 6061 to "elimasng". |
| Ref | Expression |
|---|---|
| elimasng | ⊢ ((𝐵 ∈ 𝑉 ∧ 𝐶 ∈ 𝑊) → (𝐶 ∈ (𝐴 “ {𝐵}) ↔ 〈𝐵, 𝐶〉 ∈ 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elimasng1 6061 | . 2 ⊢ ((𝐵 ∈ 𝑉 ∧ 𝐶 ∈ 𝑊) → (𝐶 ∈ (𝐴 “ {𝐵}) ↔ 𝐵𝐴𝐶)) | |
| 2 | df-br 5111 | . 2 ⊢ (𝐵𝐴𝐶 ↔ 〈𝐵, 𝐶〉 ∈ 𝐴) | |
| 3 | 1, 2 | bitrdi 287 | 1 ⊢ ((𝐵 ∈ 𝑉 ∧ 𝐶 ∈ 𝑊) → (𝐶 ∈ (𝐴 “ {𝐵}) ↔ 〈𝐵, 𝐶〉 ∈ 𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∈ wcel 2109 {csn 4592 〈cop 4598 class class class wbr 5110 “ cima 5644 |
| 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 2008 ax-8 2111 ax-9 2119 ax-ext 2702 ax-sep 5254 ax-nul 5264 ax-pr 5390 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-sb 2066 df-clab 2709 df-cleq 2722 df-clel 2804 df-ral 3046 df-rex 3055 df-rab 3409 df-v 3452 df-dif 3920 df-un 3922 df-in 3924 df-ss 3934 df-nul 4300 df-if 4492 df-sn 4593 df-pr 4595 df-op 4599 df-br 5111 df-opab 5173 df-xp 5647 df-cnv 5649 df-dm 5651 df-rn 5652 df-res 5653 df-ima 5654 |
| This theorem is referenced by: elimasn 6064 inimasn 6132 dffv3 6857 fvimacnv 7028 fvrnressn 7136 elecg 8718 imasnopn 23584 imasncld 23585 imasncls 23586 ustelimasn 24117 blval2 24457 elbl4 24458 scutval 27719 iunsnima2 32554 1stpreimas 32636 opelco3 35769 funpartfv 35940 eltail 36369 elecALTV 38262 brtrclfv2 43723 frege77d 43742 dfafv23 47258 |
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