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| Mirrors > Home > ILE Home > Th. List > seqp1g | GIF version | ||
| Description: Value of the sequence builder function at a successor. (Contributed by Mario Carneiro, 24-Jun-2013.) (Revised by Jim Kingdon, 19-Aug-2025.) |
| Ref | Expression |
|---|---|
| seqp1g | ⊢ ((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝐹 ∈ 𝑉 ∧ + ∈ 𝑊) → (seq𝑀( + , 𝐹)‘(𝑁 + 1)) = ((seq𝑀( + , 𝐹)‘𝑁) + (𝐹‘(𝑁 + 1)))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simp1 1024 | . 2 ⊢ ((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝐹 ∈ 𝑉 ∧ + ∈ 𝑊) → 𝑁 ∈ (ℤ≥‘𝑀)) | |
| 2 | simpl2 1028 | . . 3 ⊢ (((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝐹 ∈ 𝑉 ∧ + ∈ 𝑊) ∧ 𝑥 ∈ (ℤ≥‘𝑀)) → 𝐹 ∈ 𝑉) | |
| 3 | vex 2806 | . . 3 ⊢ 𝑥 ∈ V | |
| 4 | fvexg 5667 | . . 3 ⊢ ((𝐹 ∈ 𝑉 ∧ 𝑥 ∈ V) → (𝐹‘𝑥) ∈ V) | |
| 5 | 2, 3, 4 | sylancl 413 | . 2 ⊢ (((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝐹 ∈ 𝑉 ∧ + ∈ 𝑊) ∧ 𝑥 ∈ (ℤ≥‘𝑀)) → (𝐹‘𝑥) ∈ V) |
| 6 | simpl3 1029 | . . 3 ⊢ (((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝐹 ∈ 𝑉 ∧ + ∈ 𝑊) ∧ (𝑥 ∈ V ∧ 𝑦 ∈ V)) → + ∈ 𝑊) | |
| 7 | vex 2806 | . . . 4 ⊢ 𝑦 ∈ V | |
| 8 | 7 | a1i 9 | . . 3 ⊢ (((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝐹 ∈ 𝑉 ∧ + ∈ 𝑊) ∧ (𝑥 ∈ V ∧ 𝑦 ∈ V)) → 𝑦 ∈ V) |
| 9 | ovexg 6062 | . . 3 ⊢ ((𝑥 ∈ V ∧ + ∈ 𝑊 ∧ 𝑦 ∈ V) → (𝑥 + 𝑦) ∈ V) | |
| 10 | 3, 6, 8, 9 | mp3an2i 1379 | . 2 ⊢ (((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝐹 ∈ 𝑉 ∧ + ∈ 𝑊) ∧ (𝑥 ∈ V ∧ 𝑦 ∈ V)) → (𝑥 + 𝑦) ∈ V) |
| 11 | 1, 5, 10 | seq3p1 10771 | 1 ⊢ ((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝐹 ∈ 𝑉 ∧ + ∈ 𝑊) → (seq𝑀( + , 𝐹)‘(𝑁 + 1)) = ((seq𝑀( + , 𝐹)‘𝑁) + (𝐹‘(𝑁 + 1)))) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ∧ w3a 1005 = wceq 1398 ∈ wcel 2202 Vcvv 2803 ‘cfv 5333 (class class class)co 6028 1c1 8076 + caddc 8078 ℤ≥cuz 9798 seqcseq 10753 |
| 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-coll 4209 ax-sep 4212 ax-nul 4220 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-iinf 4692 ax-cnex 8166 ax-resscn 8167 ax-1cn 8168 ax-1re 8169 ax-icn 8170 ax-addcl 8171 ax-addrcl 8172 ax-mulcl 8173 ax-addcom 8175 ax-addass 8177 ax-distr 8179 ax-i2m1 8180 ax-0lt1 8181 ax-0id 8183 ax-rnegex 8184 ax-cnre 8186 ax-pre-ltirr 8187 ax-pre-ltwlin 8188 ax-pre-lttrn 8189 ax-pre-ltadd 8191 |
| 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-csb 3129 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-nul 3497 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-int 3934 df-iun 3977 df-br 4094 df-opab 4156 df-mpt 4157 df-tr 4193 df-id 4396 df-iord 4469 df-on 4471 df-ilim 4472 df-suc 4474 df-iom 4695 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-f1 5338 df-fo 5339 df-f1o 5340 df-fv 5341 df-riota 5981 df-ov 6031 df-oprab 6032 df-mpo 6033 df-1st 6312 df-2nd 6313 df-recs 6514 df-frec 6600 df-pnf 8259 df-mnf 8260 df-xr 8261 df-ltxr 8262 df-le 8263 df-sub 8395 df-neg 8396 df-inn 9187 df-n0 9446 df-z 9523 df-uz 9799 df-seqfrec 10754 |
| This theorem is referenced by: seqfveq2g 10783 seqshft2g 10788 seqsplitg 10795 seqcaopr3g 10798 seqf1oglem2a 10824 seqf1oglem2 10826 seqhomog 10836 |
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