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| Mirrors > Home > ILE Home > Th. List > rexralbidv | GIF version | ||
| Description: Formula-building rule for restricted quantifiers (deduction form). (Contributed by NM, 28-Jan-2006.) |
| Ref | Expression |
|---|---|
| 2ralbidv.1 | ⊢ (𝜑 → (𝜓 ↔ 𝜒)) |
| Ref | Expression |
|---|---|
| rexralbidv | ⊢ (𝜑 → (∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜓 ↔ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜒)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2ralbidv.1 | . . 3 ⊢ (𝜑 → (𝜓 ↔ 𝜒)) | |
| 2 | 1 | ralbidv 2550 | . 2 ⊢ (𝜑 → (∀𝑦 ∈ 𝐵 𝜓 ↔ ∀𝑦 ∈ 𝐵 𝜒)) |
| 3 | 2 | rexbidv 2551 | 1 ⊢ (𝜑 → (∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜓 ↔ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜒)) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 105 ∀wral 2528 ∃wrex 2529 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1500 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-4 1563 ax-17 1579 ax-ial 1587 |
| This proof depends on definitions: df-bi 117 df-nf 1514 df-ral 2533 df-rex 2534 |
| This theorem is used by: caucvgpr 8055 caucvgprpr 8085 caucvgsrlemgt1 8168 caucvgsrlemoffres 8173 axcaucvglemres 8272 cvg1nlemres 11772 rexfiuz 11776 resqrexlemgt0 11807 resqrexlemoverl 11808 resqrexlemglsq 11809 resqrexlemsqa 11811 resqrexlemex 11812 cau3lem 11902 caubnd2 11905 climi 12077 2clim 12091 ennnfonelemim 13372 lmcvg 15460 lmss 15489 txlm 15522 metcnpi 15758 metcnpi2 15759 elcncf 15816 cncfi 15821 limcimo 15908 cnplimclemr 15912 limccoap 15921 |
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