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| Mirrors > Home > ILE Home > Th. List > iseqovex | GIF version | ||
| Description: Closure of a function used in proving sequence builder theorems. This can be thought of as a lemma for the small number of sequence builder theorems which need it. (Contributed by Jim Kingdon, 31-May-2020.) |
| Ref | Expression |
|---|---|
| iseqovex.f | ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝑀)) → (𝐹‘𝑥) ∈ 𝑆) |
| iseqovex.pl | ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥 + 𝑦) ∈ 𝑆) |
| Ref | Expression |
|---|---|
| iseqovex | ⊢ ((𝜑 ∧ (𝑥 ∈ (ℤ≥‘𝑀) ∧ 𝑦 ∈ 𝑆)) → (𝑥(𝑧 ∈ (ℤ≥‘𝑀), 𝑤 ∈ 𝑆 ↦ (𝑤 + (𝐹‘(𝑧 + 1))))𝑦) ∈ 𝑆) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqidd 2232 | . . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ (ℤ≥‘𝑀) ∧ 𝑦 ∈ 𝑆)) → (𝑧 ∈ (ℤ≥‘𝑀), 𝑤 ∈ 𝑆 ↦ (𝑤 + (𝐹‘(𝑧 + 1)))) = (𝑧 ∈ (ℤ≥‘𝑀), 𝑤 ∈ 𝑆 ↦ (𝑤 + (𝐹‘(𝑧 + 1))))) | |
| 2 | simprr 533 | . . . 4 ⊢ (((𝜑 ∧ (𝑥 ∈ (ℤ≥‘𝑀) ∧ 𝑦 ∈ 𝑆)) ∧ (𝑧 = 𝑥 ∧ 𝑤 = 𝑦)) → 𝑤 = 𝑦) | |
| 3 | simprl 531 | . . . . . 6 ⊢ (((𝜑 ∧ (𝑥 ∈ (ℤ≥‘𝑀) ∧ 𝑦 ∈ 𝑆)) ∧ (𝑧 = 𝑥 ∧ 𝑤 = 𝑦)) → 𝑧 = 𝑥) | |
| 4 | 3 | oveq1d 6043 | . . . . 5 ⊢ (((𝜑 ∧ (𝑥 ∈ (ℤ≥‘𝑀) ∧ 𝑦 ∈ 𝑆)) ∧ (𝑧 = 𝑥 ∧ 𝑤 = 𝑦)) → (𝑧 + 1) = (𝑥 + 1)) |
| 5 | 4 | fveq2d 5652 | . . . 4 ⊢ (((𝜑 ∧ (𝑥 ∈ (ℤ≥‘𝑀) ∧ 𝑦 ∈ 𝑆)) ∧ (𝑧 = 𝑥 ∧ 𝑤 = 𝑦)) → (𝐹‘(𝑧 + 1)) = (𝐹‘(𝑥 + 1))) |
| 6 | 2, 5 | oveq12d 6046 | . . 3 ⊢ (((𝜑 ∧ (𝑥 ∈ (ℤ≥‘𝑀) ∧ 𝑦 ∈ 𝑆)) ∧ (𝑧 = 𝑥 ∧ 𝑤 = 𝑦)) → (𝑤 + (𝐹‘(𝑧 + 1))) = (𝑦 + (𝐹‘(𝑥 + 1)))) |
| 7 | simprl 531 | . . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ (ℤ≥‘𝑀) ∧ 𝑦 ∈ 𝑆)) → 𝑥 ∈ (ℤ≥‘𝑀)) | |
| 8 | simprr 533 | . . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ (ℤ≥‘𝑀) ∧ 𝑦 ∈ 𝑆)) → 𝑦 ∈ 𝑆) | |
| 9 | iseqovex.pl | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥 + 𝑦) ∈ 𝑆) | |
| 10 | 9 | caovclg 6185 | . . . . 5 ⊢ ((𝜑 ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑆)) → (𝑧 + 𝑤) ∈ 𝑆) |
| 11 | 10 | adantlr 477 | . . . 4 ⊢ (((𝜑 ∧ (𝑥 ∈ (ℤ≥‘𝑀) ∧ 𝑦 ∈ 𝑆)) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑆)) → (𝑧 + 𝑤) ∈ 𝑆) |
| 12 | fveq2 5648 | . . . . . 6 ⊢ (𝑧 = (𝑥 + 1) → (𝐹‘𝑧) = (𝐹‘(𝑥 + 1))) | |
| 13 | 12 | eleq1d 2300 | . . . . 5 ⊢ (𝑧 = (𝑥 + 1) → ((𝐹‘𝑧) ∈ 𝑆 ↔ (𝐹‘(𝑥 + 1)) ∈ 𝑆)) |
| 14 | iseqovex.f | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝑀)) → (𝐹‘𝑥) ∈ 𝑆) | |
| 15 | 14 | ralrimiva 2606 | . . . . . . 7 ⊢ (𝜑 → ∀𝑥 ∈ (ℤ≥‘𝑀)(𝐹‘𝑥) ∈ 𝑆) |
| 16 | fveq2 5648 | . . . . . . . . 9 ⊢ (𝑥 = 𝑧 → (𝐹‘𝑥) = (𝐹‘𝑧)) | |
| 17 | 16 | eleq1d 2300 | . . . . . . . 8 ⊢ (𝑥 = 𝑧 → ((𝐹‘𝑥) ∈ 𝑆 ↔ (𝐹‘𝑧) ∈ 𝑆)) |
| 18 | 17 | cbvralv 2768 | . . . . . . 7 ⊢ (∀𝑥 ∈ (ℤ≥‘𝑀)(𝐹‘𝑥) ∈ 𝑆 ↔ ∀𝑧 ∈ (ℤ≥‘𝑀)(𝐹‘𝑧) ∈ 𝑆) |
| 19 | 15, 18 | sylib 122 | . . . . . 6 ⊢ (𝜑 → ∀𝑧 ∈ (ℤ≥‘𝑀)(𝐹‘𝑧) ∈ 𝑆) |
| 20 | 19 | adantr 276 | . . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ (ℤ≥‘𝑀) ∧ 𝑦 ∈ 𝑆)) → ∀𝑧 ∈ (ℤ≥‘𝑀)(𝐹‘𝑧) ∈ 𝑆) |
| 21 | peano2uz 9878 | . . . . . 6 ⊢ (𝑥 ∈ (ℤ≥‘𝑀) → (𝑥 + 1) ∈ (ℤ≥‘𝑀)) | |
| 22 | 7, 21 | syl 14 | . . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ (ℤ≥‘𝑀) ∧ 𝑦 ∈ 𝑆)) → (𝑥 + 1) ∈ (ℤ≥‘𝑀)) |
| 23 | 13, 20, 22 | rspcdva 2916 | . . . 4 ⊢ ((𝜑 ∧ (𝑥 ∈ (ℤ≥‘𝑀) ∧ 𝑦 ∈ 𝑆)) → (𝐹‘(𝑥 + 1)) ∈ 𝑆) |
| 24 | 11, 8, 23 | caovcld 6186 | . . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ (ℤ≥‘𝑀) ∧ 𝑦 ∈ 𝑆)) → (𝑦 + (𝐹‘(𝑥 + 1))) ∈ 𝑆) |
| 25 | 1, 6, 7, 8, 24 | ovmpod 6159 | . 2 ⊢ ((𝜑 ∧ (𝑥 ∈ (ℤ≥‘𝑀) ∧ 𝑦 ∈ 𝑆)) → (𝑥(𝑧 ∈ (ℤ≥‘𝑀), 𝑤 ∈ 𝑆 ↦ (𝑤 + (𝐹‘(𝑧 + 1))))𝑦) = (𝑦 + (𝐹‘(𝑥 + 1)))) |
| 26 | 25, 24 | eqeltrd 2308 | 1 ⊢ ((𝜑 ∧ (𝑥 ∈ (ℤ≥‘𝑀) ∧ 𝑦 ∈ 𝑆)) → (𝑥(𝑧 ∈ (ℤ≥‘𝑀), 𝑤 ∈ 𝑆 ↦ (𝑤 + (𝐹‘(𝑧 + 1))))𝑦) ∈ 𝑆) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 = wceq 1398 ∈ wcel 2202 ∀wral 2511 ‘cfv 5333 (class class class)co 6028 ∈ cmpo 6030 1c1 8093 + caddc 8095 ℤ≥cuz 9816 |
| 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 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4212 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-cnex 8183 ax-resscn 8184 ax-1cn 8185 ax-1re 8186 ax-icn 8187 ax-addcl 8188 ax-addrcl 8189 ax-mulcl 8190 ax-addcom 8192 ax-addass 8194 ax-distr 8196 ax-i2m1 8197 ax-0lt1 8198 ax-0id 8200 ax-rnegex 8201 ax-cnre 8203 ax-pre-ltirr 8204 ax-pre-ltwlin 8205 ax-pre-lttrn 8206 ax-pre-ltadd 8208 |
| This theorem depends on definitions: df-bi 117 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-nel 2499 df-ral 2516 df-rex 2517 df-reu 2518 df-rab 2520 df-v 2805 df-sbc 3033 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-int 3934 df-br 4094 df-opab 4156 df-mpt 4157 df-id 4396 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-rn 4742 df-res 4743 df-ima 4744 df-iota 5293 df-fun 5335 df-fn 5336 df-f 5337 df-fv 5341 df-riota 5981 df-ov 6031 df-oprab 6032 df-mpo 6033 df-pnf 8275 df-mnf 8276 df-xr 8277 df-ltxr 8278 df-le 8279 df-sub 8411 df-neg 8412 df-inn 9203 df-n0 9462 df-z 9541 df-uz 9817 |
| This theorem is referenced by: seq3val 10785 seq3-1 10787 seq3p1 10790 |
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