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| Mirrors > Home > ILE Home > Th. List > r19.2uz | GIF version | ||
| Description: A version of r19.2m 3579 for upper integer quantifiers. (Contributed by Mario Carneiro, 15-Feb-2014.) |
| Ref | Expression |
|---|---|
| rexuz3.1 | ⊢ 𝑍 = (ℤ≥‘𝑀) |
| Ref | Expression |
|---|---|
| r19.2uz | ⊢ (∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)𝜑 → ∃𝑘 ∈ 𝑍 𝜑) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eluzelz 9755 | . . . . . 6 ⊢ (𝑗 ∈ (ℤ≥‘𝑀) → 𝑗 ∈ ℤ) | |
| 2 | uzid 9760 | . . . . . 6 ⊢ (𝑗 ∈ ℤ → 𝑗 ∈ (ℤ≥‘𝑗)) | |
| 3 | elex2 2817 | . . . . . 6 ⊢ (𝑗 ∈ (ℤ≥‘𝑗) → ∃𝑘 𝑘 ∈ (ℤ≥‘𝑗)) | |
| 4 | 1, 2, 3 | 3syl 17 | . . . . 5 ⊢ (𝑗 ∈ (ℤ≥‘𝑀) → ∃𝑘 𝑘 ∈ (ℤ≥‘𝑗)) |
| 5 | rexuz3.1 | . . . . 5 ⊢ 𝑍 = (ℤ≥‘𝑀) | |
| 6 | 4, 5 | eleq2s 2324 | . . . 4 ⊢ (𝑗 ∈ 𝑍 → ∃𝑘 𝑘 ∈ (ℤ≥‘𝑗)) |
| 7 | r19.2m 3579 | . . . 4 ⊢ ((∃𝑘 𝑘 ∈ (ℤ≥‘𝑗) ∧ ∀𝑘 ∈ (ℤ≥‘𝑗)𝜑) → ∃𝑘 ∈ (ℤ≥‘𝑗)𝜑) | |
| 8 | 6, 7 | sylan 283 | . . 3 ⊢ ((𝑗 ∈ 𝑍 ∧ ∀𝑘 ∈ (ℤ≥‘𝑗)𝜑) → ∃𝑘 ∈ (ℤ≥‘𝑗)𝜑) |
| 9 | 5 | uztrn2 9764 | . . . . . . 7 ⊢ ((𝑗 ∈ 𝑍 ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → 𝑘 ∈ 𝑍) |
| 10 | 9 | ex 115 | . . . . . 6 ⊢ (𝑗 ∈ 𝑍 → (𝑘 ∈ (ℤ≥‘𝑗) → 𝑘 ∈ 𝑍)) |
| 11 | 10 | anim1d 336 | . . . . 5 ⊢ (𝑗 ∈ 𝑍 → ((𝑘 ∈ (ℤ≥‘𝑗) ∧ 𝜑) → (𝑘 ∈ 𝑍 ∧ 𝜑))) |
| 12 | 11 | reximdv2 2629 | . . . 4 ⊢ (𝑗 ∈ 𝑍 → (∃𝑘 ∈ (ℤ≥‘𝑗)𝜑 → ∃𝑘 ∈ 𝑍 𝜑)) |
| 13 | 12 | imp 124 | . . 3 ⊢ ((𝑗 ∈ 𝑍 ∧ ∃𝑘 ∈ (ℤ≥‘𝑗)𝜑) → ∃𝑘 ∈ 𝑍 𝜑) |
| 14 | 8, 13 | syldan 282 | . 2 ⊢ ((𝑗 ∈ 𝑍 ∧ ∀𝑘 ∈ (ℤ≥‘𝑗)𝜑) → ∃𝑘 ∈ 𝑍 𝜑) |
| 15 | 14 | rexlimiva 2643 | 1 ⊢ (∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)𝜑 → ∃𝑘 ∈ 𝑍 𝜑) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1395 ∃wex 1538 ∈ wcel 2200 ∀wral 2508 ∃wrex 2509 ‘cfv 5324 ℤcz 9469 ℤ≥cuz 9745 |
| 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-in1 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4205 ax-pow 4262 ax-pr 4297 ax-un 4528 ax-setind 4633 ax-cnex 8113 ax-resscn 8114 ax-pre-ltirr 8134 ax-pre-ltwlin 8135 |
| This theorem depends on definitions: df-bi 117 df-3or 1003 df-3an 1004 df-tru 1398 df-fal 1401 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ne 2401 df-nel 2496 df-ral 2513 df-rex 2514 df-rab 2517 df-v 2802 df-sbc 3030 df-dif 3200 df-un 3202 df-in 3204 df-ss 3211 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-br 4087 df-opab 4149 df-mpt 4150 df-id 4388 df-xp 4729 df-rel 4730 df-cnv 4731 df-co 4732 df-dm 4733 df-rn 4734 df-res 4735 df-ima 4736 df-iota 5284 df-fun 5326 df-fn 5327 df-f 5328 df-fv 5332 df-ov 6016 df-pnf 8206 df-mnf 8207 df-xr 8208 df-ltxr 8209 df-le 8210 df-neg 8343 df-z 9470 df-uz 9746 |
| This theorem is referenced by: recvguniq 11546 climge0 11876 |
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