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| Mirrors > Home > MPE Home > Th. List > r19.2uz | Structured version Visualization version GIF version | ||
| Description: A version of r19.2z 4454 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 12982 | . . . . . 6 ⊢ (𝑗 ∈ (ℤ≥‘𝑀) → 𝑗 ∈ ℤ) | |
| 2 | uzid 12987 | . . . . . 6 ⊢ (𝑗 ∈ ℤ → 𝑗 ∈ (ℤ≥‘𝑗)) | |
| 3 | ne0i 4286 | . . . . . 6 ⊢ (𝑗 ∈ (ℤ≥‘𝑗) → (ℤ≥‘𝑗) ≠ ∅) | |
| 4 | 1, 2, 3 | 3syl 19 | . . . . 5 ⊢ (𝑗 ∈ (ℤ≥‘𝑀) → (ℤ≥‘𝑗) ≠ ∅) |
| 5 | rexuz3.1 | . . . . 5 ⊢ 𝑍 = (ℤ≥‘𝑀) | |
| 6 | 4, 5 | eleq2s 2878 | . . . 4 ⊢ (𝑗 ∈ 𝑍 → (ℤ≥‘𝑗) ≠ ∅) |
| 7 | r19.2z 4454 | . . . 4 ⊢ (((ℤ≥‘𝑗) ≠ ∅ ∧ ∀𝑘 ∈ (ℤ≥‘𝑗)𝜑) → ∃𝑘 ∈ (ℤ≥‘𝑗)𝜑) | |
| 8 | 6, 7 | sylan 592 | . . 3 ⊢ ((𝑗 ∈ 𝑍 ∧ ∀𝑘 ∈ (ℤ≥‘𝑗)𝜑) → ∃𝑘 ∈ (ℤ≥‘𝑗)𝜑) |
| 9 | 5 | uztrn2 12991 | . . . . . . 7 ⊢ ((𝑗 ∈ 𝑍 ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → 𝑘 ∈ 𝑍) |
| 10 | 9 | ex 418 | . . . . . 6 ⊢ (𝑗 ∈ 𝑍 → (𝑘 ∈ (ℤ≥‘𝑗) → 𝑘 ∈ 𝑍)) |
| 11 | 10 | anim1d 623 | . . . . 5 ⊢ (𝑗 ∈ 𝑍 → ((𝑘 ∈ (ℤ≥‘𝑗) ∧ 𝜑) → (𝑘 ∈ 𝑍 ∧ 𝜑))) |
| 12 | 11 | reximdv2 3172 | . . . 4 ⊢ (𝑗 ∈ 𝑍 → (∃𝑘 ∈ (ℤ≥‘𝑗)𝜑 → ∃𝑘 ∈ 𝑍 𝜑)) |
| 13 | 12 | imp 412 | . . 3 ⊢ ((𝑗 ∈ 𝑍 ∧ ∃𝑘 ∈ (ℤ≥‘𝑗)𝜑) → ∃𝑘 ∈ 𝑍 𝜑) |
| 14 | 8, 13 | syldan 603 | . 2 ⊢ ((𝑗 ∈ 𝑍 ∧ ∀𝑘 ∈ (ℤ≥‘𝑗)𝜑) → ∃𝑘 ∈ 𝑍 𝜑) |
| 15 | 14 | rexlimiva 3155 | 1 ⊢ (∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)𝜑 → ∃𝑘 ∈ 𝑍 𝜑) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 ∈ wcel 2144 ≠ wne 2955 ∀wral 3076 ∃wrex 3086 ∅c0 4277 ‘cfv 6543 ℤcz 12700 ℤ≥cuz 12972 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5327 ax-pr 5391 ax-un 7755 ax-cnex 11263 ax-resscn 11264 ax-pre-lttri 11281 ax-pre-lttrn 11282 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3848 df-ss 3897 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5546 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-iota 6497 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-ov 7427 df-er 8724 df-en 8981 df-dom 8982 df-sdom 8983 df-pnf 11352 df-mnf 11353 df-xr 11354 df-ltxr 11355 df-le 11356 df-neg 11551 df-z 12701 df-uz 12973 |
| This theorem is used by: lmcls 23629 1stccnp 23790 iscmet3lem1 25621 iscmet3lem2 25622 uniioombllem6 25918 ulmcau 26731 ulmbdd 26734 ulmcn 26735 ulmdvlem3 26738 iblulm 26743 |
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