| Mathbox for Glauco Siliprandi |
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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 15312 | . . 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 2828 | . . . . . . . . . 10 ⊢ (𝑗 ∈ 𝑍 ↔ 𝑗 ∈ (ℤ≥‘𝑀)) |
| 9 | 8 | biimpi 216 | . . . . . . . . 9 ⊢ (𝑗 ∈ 𝑍 → 𝑗 ∈ (ℤ≥‘𝑀)) |
| 10 | eluzelz 12798 | . . . . . . . . 9 ⊢ (𝑗 ∈ (ℤ≥‘𝑀) → 𝑗 ∈ ℤ) | |
| 11 | uzid 12803 | . . . . . . . . 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 633 | . . . . . . . 8 ⊢ (𝑘 = 𝑗 → ((𝜒 ∧ 𝜓) ↔ (𝜃 ∧ 𝜏))) |
| 18 | 17 | rspcva 3562 | . . . . . . 7 ⊢ ((𝑗 ∈ (ℤ≥‘𝑗) ∧ ∀𝑘 ∈ (ℤ≥‘𝑗)(𝜒 ∧ 𝜓)) → (𝜃 ∧ 𝜏)) |
| 19 | 13, 14, 18 | syl2anc 585 | . . . . . 6 ⊢ ((𝑗 ∈ 𝑍 ∧ ∀𝑘 ∈ (ℤ≥‘𝑗)(𝜒 ∧ 𝜓)) → (𝜃 ∧ 𝜏)) |
| 20 | 19 | adantll 715 | . . . . 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 3239 | . 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 1542 Ⅎwnf 1785 ∈ wcel 2114 ∀wral 3051 ∃wrex 3061 ‘cfv 6498 ℤcz 12524 ℤ≥cuz 12788 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2708 ax-sep 5231 ax-nul 5241 ax-pow 5307 ax-pr 5375 ax-un 7689 ax-cnex 11094 ax-resscn 11095 ax-pre-lttri 11112 ax-pre-lttrn 11113 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3062 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-br 5086 df-opab 5148 df-mpt 5167 df-id 5526 df-po 5539 df-so 5540 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-fv 6506 df-ov 7370 df-er 8643 df-en 8894 df-dom 8895 df-sdom 8896 df-pnf 11181 df-mnf 11182 df-xr 11183 df-ltxr 11184 df-le 11185 df-neg 11380 df-z 12525 df-uz 12789 |
| This theorem is referenced by: smflimlem4 47202 |
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