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| Mirrors > Home > MPE Home > Th. List > Mathboxes > rexanuz3 | Structured version Visualization version GIF version | ||
| Description: Combine two different upper integer properties into one, for a single integer. (Contributed by Glauco Siliprandi, 26-Jun-2021.) |
| Ref | Expression |
|---|---|
| rexanuz3.1 | ⊢ Ⅎ𝑗𝜑 |
| rexanuz3.2 | ⊢ 𝑍 = (ℤ≥‘𝑀) |
| rexanuz3.3 | ⊢ (𝜑 → ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)𝜒) |
| rexanuz3.4 | ⊢ (𝜑 → ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)𝜓) |
| rexanuz3.5 | ⊢ (𝑘 = 𝑗 → (𝜒 ↔ 𝜃)) |
| rexanuz3.6 | ⊢ (𝑘 = 𝑗 → (𝜓 ↔ 𝜏)) |
| Ref | Expression |
|---|---|
| rexanuz3 | ⊢ (𝜑 → ∃𝑗 ∈ 𝑍 (𝜃 ∧ 𝜏)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rexanuz3.3 | . . . 4 ⊢ (𝜑 → ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)𝜒) | |
| 2 | rexanuz3.4 | . . . 4 ⊢ (𝜑 → ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)𝜓) | |
| 3 | 1, 2 | jca 511 | . . 3 ⊢ (𝜑 → (∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)𝜒 ∧ ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)𝜓)) |
| 4 | rexanuz3.2 | . . . 4 ⊢ 𝑍 = (ℤ≥‘𝑀) | |
| 5 | 4 | rexanuz2 15357 | . . 3 ⊢ (∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)(𝜒 ∧ 𝜓) ↔ (∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)𝜒 ∧ ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)𝜓)) |
| 6 | 3, 5 | sylibr 234 | . 2 ⊢ (𝜑 → ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)(𝜒 ∧ 𝜓)) |
| 7 | rexanuz3.1 | . . 3 ⊢ Ⅎ𝑗𝜑 | |
| 8 | 4 | eleq2i 2825 | . . . . . . . . . 10 ⊢ (𝑗 ∈ 𝑍 ↔ 𝑗 ∈ (ℤ≥‘𝑀)) |
| 9 | 8 | biimpi 216 | . . . . . . . . 9 ⊢ (𝑗 ∈ 𝑍 → 𝑗 ∈ (ℤ≥‘𝑀)) |
| 10 | eluzelz 12855 | . . . . . . . . 9 ⊢ (𝑗 ∈ (ℤ≥‘𝑀) → 𝑗 ∈ ℤ) | |
| 11 | uzid 12860 | . . . . . . . . 9 ⊢ (𝑗 ∈ ℤ → 𝑗 ∈ (ℤ≥‘𝑗)) | |
| 12 | 9, 10, 11 | 3syl 18 | . . . . . . . 8 ⊢ (𝑗 ∈ 𝑍 → 𝑗 ∈ (ℤ≥‘𝑗)) |
| 13 | 12 | adantr 480 | . . . . . . 7 ⊢ ((𝑗 ∈ 𝑍 ∧ ∀𝑘 ∈ (ℤ≥‘𝑗)(𝜒 ∧ 𝜓)) → 𝑗 ∈ (ℤ≥‘𝑗)) |
| 14 | simpr 484 | . . . . . . 7 ⊢ ((𝑗 ∈ 𝑍 ∧ ∀𝑘 ∈ (ℤ≥‘𝑗)(𝜒 ∧ 𝜓)) → ∀𝑘 ∈ (ℤ≥‘𝑗)(𝜒 ∧ 𝜓)) | |
| 15 | rexanuz3.5 | . . . . . . . . 9 ⊢ (𝑘 = 𝑗 → (𝜒 ↔ 𝜃)) | |
| 16 | rexanuz3.6 | . . . . . . . . 9 ⊢ (𝑘 = 𝑗 → (𝜓 ↔ 𝜏)) | |
| 17 | 15, 16 | anbi12d 632 | . . . . . . . 8 ⊢ (𝑘 = 𝑗 → ((𝜒 ∧ 𝜓) ↔ (𝜃 ∧ 𝜏))) |
| 18 | 17 | rspcva 3597 | . . . . . . 7 ⊢ ((𝑗 ∈ (ℤ≥‘𝑗) ∧ ∀𝑘 ∈ (ℤ≥‘𝑗)(𝜒 ∧ 𝜓)) → (𝜃 ∧ 𝜏)) |
| 19 | 13, 14, 18 | syl2anc 584 | . . . . . 6 ⊢ ((𝑗 ∈ 𝑍 ∧ ∀𝑘 ∈ (ℤ≥‘𝑗)(𝜒 ∧ 𝜓)) → (𝜃 ∧ 𝜏)) |
| 20 | 19 | adantll 714 | . . . . 5 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ ∀𝑘 ∈ (ℤ≥‘𝑗)(𝜒 ∧ 𝜓)) → (𝜃 ∧ 𝜏)) |
| 21 | 20 | ex 412 | . . . 4 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → (∀𝑘 ∈ (ℤ≥‘𝑗)(𝜒 ∧ 𝜓) → (𝜃 ∧ 𝜏))) |
| 22 | 21 | ex 412 | . . 3 ⊢ (𝜑 → (𝑗 ∈ 𝑍 → (∀𝑘 ∈ (ℤ≥‘𝑗)(𝜒 ∧ 𝜓) → (𝜃 ∧ 𝜏)))) |
| 23 | 7, 22 | reximdai 3242 | . 2 ⊢ (𝜑 → (∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)(𝜒 ∧ 𝜓) → ∃𝑗 ∈ 𝑍 (𝜃 ∧ 𝜏))) |
| 24 | 6, 23 | mpd 15 | 1 ⊢ (𝜑 → ∃𝑗 ∈ 𝑍 (𝜃 ∧ 𝜏)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1539 Ⅎwnf 1782 ∈ wcel 2107 ∀wral 3050 ∃wrex 3059 ‘cfv 6528 ℤcz 12581 ℤ≥cuz 12845 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1794 ax-4 1808 ax-5 1909 ax-6 1966 ax-7 2006 ax-8 2109 ax-9 2117 ax-10 2140 ax-11 2156 ax-12 2176 ax-ext 2706 ax-sep 5264 ax-nul 5274 ax-pow 5333 ax-pr 5400 ax-un 7724 ax-cnex 11178 ax-resscn 11179 ax-pre-lttri 11196 ax-pre-lttrn 11197 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1779 df-nf 1783 df-sb 2064 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2808 df-nfc 2884 df-ne 2932 df-nel 3036 df-ral 3051 df-rex 3060 df-rab 3414 df-v 3459 df-sbc 3764 df-csb 3873 df-dif 3927 df-un 3929 df-in 3931 df-ss 3941 df-nul 4307 df-if 4499 df-pw 4575 df-sn 4600 df-pr 4602 df-op 4606 df-uni 4882 df-br 5118 df-opab 5180 df-mpt 5200 df-id 5546 df-po 5559 df-so 5560 df-xp 5658 df-rel 5659 df-cnv 5660 df-co 5661 df-dm 5662 df-rn 5663 df-res 5664 df-ima 5665 df-iota 6481 df-fun 6530 df-fn 6531 df-f 6532 df-f1 6533 df-fo 6534 df-f1o 6535 df-fv 6536 df-ov 7403 df-er 8714 df-en 8955 df-dom 8956 df-sdom 8957 df-pnf 11264 df-mnf 11265 df-xr 11266 df-ltxr 11267 df-le 11268 df-neg 11462 df-z 12582 df-uz 12846 |
| This theorem is referenced by: smflimlem4 46739 |
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