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| Mirrors > Home > MPE Home > Th. List > elima2 | Structured version Visualization version GIF version | ||
| Description: Membership in an image. Theorem 34 of [Suppes] p. 65. (Contributed by NM, 11-Aug-2004.) |
| Ref | Expression |
|---|---|
| elima.1 | ⊢ 𝐴 ∈ V |
| Ref | Expression |
|---|---|
| elima2 | ⊢ (𝐴 ∈ (𝐵 “ 𝐶) ↔ ∃𝑥(𝑥 ∈ 𝐶 ∧ 𝑥𝐵𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elima.1 | . . 3 ⊢ 𝐴 ∈ V | |
| 2 | 1 | elima 6017 | . 2 ⊢ (𝐴 ∈ (𝐵 “ 𝐶) ↔ ∃𝑥 ∈ 𝐶 𝑥𝐵𝐴) |
| 3 | df-rex 3064 | . 2 ⊢ (∃𝑥 ∈ 𝐶 𝑥𝐵𝐴 ↔ ∃𝑥(𝑥 ∈ 𝐶 ∧ 𝑥𝐵𝐴)) | |
| 4 | 2, 3 | bitri 276 | 1 ⊢ (𝐴 ∈ (𝐵 “ 𝐶) ↔ ∃𝑥(𝑥 ∈ 𝐶 ∧ 𝑥𝐵𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 207 ∧ wa 396 ∃wex 1786 ∈ wcel 2119 ∃wrex 3063 Vcvv 3431 class class class wbr 5072 “ cima 5621 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2711 ax-sep 5218 ax-pr 5362 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-sb 2074 df-clab 2718 df-cleq 2731 df-clel 2814 df-ral 3054 df-rex 3064 df-rab 3392 df-v 3433 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4262 df-if 4455 df-sn 4556 df-pr 4558 df-op 4562 df-br 5073 df-opab 5135 df-xp 5624 df-cnv 5626 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 |
| This theorem is referenced by: elima3 6019 dminss 6104 imainss 6105 imadif 6569 metcld2 25292 isch2 31312 dfdm5 36001 dfrn5 36002 brimg 36163 coxp 49323 |
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