Theorem itcovalpclem2 49451

Description: Lemma 2 for itcovalpc 49452: induction step. (Contributed by AV, 4-May-2024.)

Hypothesis

Ref	Expression
itcovalpc.f	⊢ 𝐹 = (𝑛 ∈ ℕ0 ↦ (𝑛 + 𝐶))

Assertion

Ref	Expression
itcovalpclem2	⊢ ((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) → (((IterComp‘𝐹)‘𝑦) = (𝑛 ∈ ℕ0 ↦ (𝑛 + (𝐶 · 𝑦))) → ((IterComp‘𝐹)‘(𝑦 + 1)) = (𝑛 ∈ ℕ0 ↦ (𝑛 + (𝐶 · (𝑦 + 1))))))

Distinct variable groups:   𝐶,𝑛   𝑦,𝑛

Allowed substitution hints:   𝐶(𝑦)   𝐹(𝑦,𝑛)

Proof of Theorem itcovalpclem2

Dummy variable 𝑚 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		itcovalpc.f	. . . . 5 ⊢ 𝐹 = (𝑛 ∈ ℕ0 ↦ (𝑛 + 𝐶))
2		nn0ex 12505	. . . . . 6 ⊢ ℕ0 ∈ V
3	2	mptex 7221	. . . . 5 ⊢ (𝑛 ∈ ℕ0 ↦ (𝑛 + 𝐶)) ∈ V
4	1, 3	eqeltri 2859	. . . 4 ⊢ 𝐹 ∈ V
5		simpl 487	. . . 4 ⊢ ((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) → 𝑦 ∈ ℕ0)
6		simpr 489	. . . 4 ⊢ (((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) ∧ ((IterComp‘𝐹)‘𝑦) = (𝑛 ∈ ℕ0 ↦ (𝑛 + (𝐶 · 𝑦)))) → ((IterComp‘𝐹)‘𝑦) = (𝑛 ∈ ℕ0 ↦ (𝑛 + (𝐶 · 𝑦))))
7		itcovalsucov 49448	. . . 4 ⊢ ((𝐹 ∈ V ∧ 𝑦 ∈ ℕ0 ∧ ((IterComp‘𝐹)‘𝑦) = (𝑛 ∈ ℕ0 ↦ (𝑛 + (𝐶 · 𝑦)))) → ((IterComp‘𝐹)‘(𝑦 + 1)) = (𝐹 ∘ (𝑛 ∈ ℕ0 ↦ (𝑛 + (𝐶 · 𝑦)))))
8	4, 5, 6, 7	mp3an2ani 1497	. . 3 ⊢ (((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) ∧ ((IterComp‘𝐹)‘𝑦) = (𝑛 ∈ ℕ0 ↦ (𝑛 + (𝐶 · 𝑦)))) → ((IterComp‘𝐹)‘(𝑦 + 1)) = (𝐹 ∘ (𝑛 ∈ ℕ0 ↦ (𝑛 + (𝐶 · 𝑦)))))
9		simpr 489	. . . . . . 7 ⊢ (((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) ∧ 𝑛 ∈ ℕ0) → 𝑛 ∈ ℕ0)
10		simplr 780	. . . . . . . 8 ⊢ (((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) ∧ 𝑛 ∈ ℕ0) → 𝐶 ∈ ℕ0)
11	5	adantr 485	. . . . . . . 8 ⊢ (((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) ∧ 𝑛 ∈ ℕ0) → 𝑦 ∈ ℕ0)
12	10, 11	nn0mulcld 12565	. . . . . . 7 ⊢ (((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) ∧ 𝑛 ∈ ℕ0) → (𝐶 · 𝑦) ∈ ℕ0)
13	9, 12	nn0addcld 12564	. . . . . 6 ⊢ (((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) ∧ 𝑛 ∈ ℕ0) → (𝑛 + (𝐶 · 𝑦)) ∈ ℕ0)
14		eqidd 2764	. . . . . 6 ⊢ ((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) → (𝑛 ∈ ℕ0 ↦ (𝑛 + (𝐶 · 𝑦))) = (𝑛 ∈ ℕ0 ↦ (𝑛 + (𝐶 · 𝑦))))
15		oveq1 7417	. . . . . . . . 9 ⊢ (𝑛 = 𝑚 → (𝑛 + 𝐶) = (𝑚 + 𝐶))
16	15	cbvmptv 5215	. . . . . . . 8 ⊢ (𝑛 ∈ ℕ0 ↦ (𝑛 + 𝐶)) = (𝑚 ∈ ℕ0 ↦ (𝑚 + 𝐶))
17	1, 16	eqtri 2786	. . . . . . 7 ⊢ 𝐹 = (𝑚 ∈ ℕ0 ↦ (𝑚 + 𝐶))
18	17	a1i 11	. . . . . 6 ⊢ ((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) → 𝐹 = (𝑚 ∈ ℕ0 ↦ (𝑚 + 𝐶)))
19		oveq1 7417	. . . . . 6 ⊢ (𝑚 = (𝑛 + (𝐶 · 𝑦)) → (𝑚 + 𝐶) = ((𝑛 + (𝐶 · 𝑦)) + 𝐶))
20	13, 14, 18, 19	fmptco 7125	. . . . 5 ⊢ ((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) → (𝐹 ∘ (𝑛 ∈ ℕ0 ↦ (𝑛 + (𝐶 · 𝑦)))) = (𝑛 ∈ ℕ0 ↦ ((𝑛 + (𝐶 · 𝑦)) + 𝐶)))
21	9	nn0cnd 12562	. . . . . . . 8 ⊢ (((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) ∧ 𝑛 ∈ ℕ0) → 𝑛 ∈ ℂ)
22	12	nn0cnd 12562	. . . . . . . 8 ⊢ (((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) ∧ 𝑛 ∈ ℕ0) → (𝐶 · 𝑦) ∈ ℂ)
23	10	nn0cnd 12562	. . . . . . . 8 ⊢ (((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) ∧ 𝑛 ∈ ℕ0) → 𝐶 ∈ ℂ)
24	21, 22, 23	addassd 11226	. . . . . . 7 ⊢ (((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) ∧ 𝑛 ∈ ℕ0) → ((𝑛 + (𝐶 · 𝑦)) + 𝐶) = (𝑛 + ((𝐶 · 𝑦) + 𝐶)))
25		nn0cn 12509	. . . . . . . . . . . . . 14 ⊢ (𝐶 ∈ ℕ0 → 𝐶 ∈ ℂ)
26	25	mulridd 11221	. . . . . . . . . . . . 13 ⊢ (𝐶 ∈ ℕ0 → (𝐶 · 1) = 𝐶)
27	26	adantl 486	. . . . . . . . . . . 12 ⊢ ((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) → (𝐶 · 1) = 𝐶)
28	27	eqcomd 2769	. . . . . . . . . . 11 ⊢ ((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) → 𝐶 = (𝐶 · 1))
29	28	oveq2d 7426	. . . . . . . . . 10 ⊢ ((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) → ((𝐶 · 𝑦) + 𝐶) = ((𝐶 · 𝑦) + (𝐶 · 1)))
30		simpr 489	. . . . . . . . . . . 12 ⊢ ((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) → 𝐶 ∈ ℕ0)
31	30	nn0cnd 12562	. . . . . . . . . . 11 ⊢ ((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) → 𝐶 ∈ ℂ)
32	5	nn0cnd 12562	. . . . . . . . . . 11 ⊢ ((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) → 𝑦 ∈ ℂ)
33		1cnd 11197	. . . . . . . . . . 11 ⊢ ((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) → 1 ∈ ℂ)
34	31, 32, 33	adddid 11228	. . . . . . . . . 10 ⊢ ((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) → (𝐶 · (𝑦 + 1)) = ((𝐶 · 𝑦) + (𝐶 · 1)))
35	29, 34	eqtr4d 2801	. . . . . . . . 9 ⊢ ((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) → ((𝐶 · 𝑦) + 𝐶) = (𝐶 · (𝑦 + 1)))
36	35	oveq2d 7426	. . . . . . . 8 ⊢ ((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) → (𝑛 + ((𝐶 · 𝑦) + 𝐶)) = (𝑛 + (𝐶 · (𝑦 + 1))))
37	36	adantr 485	. . . . . . 7 ⊢ (((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) ∧ 𝑛 ∈ ℕ0) → (𝑛 + ((𝐶 · 𝑦) + 𝐶)) = (𝑛 + (𝐶 · (𝑦 + 1))))
38	24, 37	eqtrd 2798	. . . . . 6 ⊢ (((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) ∧ 𝑛 ∈ ℕ0) → ((𝑛 + (𝐶 · 𝑦)) + 𝐶) = (𝑛 + (𝐶 · (𝑦 + 1))))
39	38	mpteq2dva 5204	. . . . 5 ⊢ ((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) → (𝑛 ∈ ℕ0 ↦ ((𝑛 + (𝐶 · 𝑦)) + 𝐶)) = (𝑛 ∈ ℕ0 ↦ (𝑛 + (𝐶 · (𝑦 + 1)))))
40	20, 39	eqtrd 2798	. . . 4 ⊢ ((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) → (𝐹 ∘ (𝑛 ∈ ℕ0 ↦ (𝑛 + (𝐶 · 𝑦)))) = (𝑛 ∈ ℕ0 ↦ (𝑛 + (𝐶 · (𝑦 + 1)))))
41	40	adantr 485	. . 3 ⊢ (((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) ∧ ((IterComp‘𝐹)‘𝑦) = (𝑛 ∈ ℕ0 ↦ (𝑛 + (𝐶 · 𝑦)))) → (𝐹 ∘ (𝑛 ∈ ℕ0 ↦ (𝑛 + (𝐶 · 𝑦)))) = (𝑛 ∈ ℕ0 ↦ (𝑛 + (𝐶 · (𝑦 + 1)))))
42	8, 41	eqtrd 2798	. 2 ⊢ (((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) ∧ ((IterComp‘𝐹)‘𝑦) = (𝑛 ∈ ℕ0 ↦ (𝑛 + (𝐶 · 𝑦)))) → ((IterComp‘𝐹)‘(𝑦 + 1)) = (𝑛 ∈ ℕ0 ↦ (𝑛 + (𝐶 · (𝑦 + 1)))))
43	42	ex 417	1 ⊢ ((𝑦 ∈ ℕ0 ∧ 𝐶 ∈ ℕ0) → (((IterComp‘𝐹)‘𝑦) = (𝑛 ∈ ℕ0 ↦ (𝑛 + (𝐶 · 𝑦))) → ((IterComp‘𝐹)‘(𝑦 + 1)) = (𝑛 ∈ ℕ0 ↦ (𝑛 + (𝐶 · (𝑦 + 1))))))

Syntax hints:   → wi 4   ∧ wa 400   = wceq 1570   ∈ wcel 2143  Vcvv 3455   ↦ cmpt 5192   ∘ ccom 5665  ‘cfv 6536  (class class class)co 7410  1c1 11096   + caddc 11098   · cmul 11100  ℕ₀cn0 12499  IterCompcitco 49437

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1825  ax-4 1839  ax-5 1940  ax-6 1997  ax-7 2038  ax-8 2145  ax-9 2153  ax-10 2176  ax-11 2192  ax-12 2213  ax-ext 2735  ax-rep 5238  ax-sep 5257  ax-nul 5269  ax-pow 5336  ax-pr 5404  ax-un 7732  ax-inf2 9606  ax-cnex 11151  ax-resscn 11152  ax-1cn 11153  ax-icn 11154  ax-addcl 11155  ax-addrcl 11156  ax-mulcl 11157  ax-mulrcl 11158  ax-mulcom 11159  ax-addass 11160  ax-mulass 11161  ax-distr 11162  ax-i2m1 11163  ax-1ne0 11164  ax-1rid 11165  ax-rnegex 11166  ax-rrecex 11167  ax-cnre 11168  ax-pre-lttri 11169  ax-pre-lttrn 11170  ax-pre-ltadd 11171  ax-pre-mulgt0 11172

This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3or 1104  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1810  df-nf 1814  df-sb 2097  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2838  df-nfc 2912  df-ne 2959  df-nel 3065  df-ral 3080  df-rex 3090  df-reu 3370  df-rab 3417  df-v 3457  df-sbc 3745  df-csb 3854  df-dif 3908  df-un 3910  df-in 3912  df-ss 3922  df-pss 3925  df-nul 4287  df-if 4488  df-pw 4564  df-sn 4590  df-pr 4592  df-op 4596  df-uni 4873  df-iun 4958  df-br 5110  df-opab 5174  df-mpt 5193  df-tr 5219  df-id 5556  df-eprel 5561  df-po 5569  df-so 5570  df-fr 5614  df-we 5616  df-xp 5667  df-rel 5668  df-cnv 5669  df-co 5670  df-dm 5671  df-rn 5672  df-res 5673  df-ima 5674  df-pred 6302  df-ord 6363  df-on 6364  df-lim 6365  df-suc 6366  df-iota 6492  df-fun 6538  df-fn 6539  df-f 6540  df-f1 6541  df-fo 6542  df-f1o 6543  df-fv 6544  df-riota 7367  df-ov 7413  df-oprab 7414  df-mpo 7415  df-om 7859  df-2nd 7983  df-frecs 8274  df-wrecs 8305  df-recs 8354  df-rdg 8393  df-er 8690  df-en 8940  df-dom 8941  df-sdom 8942  df-pnf 11240  df-mnf 11241  df-xr 11242  df-ltxr 11243  df-le 11244  df-sub 11438  df-neg 11439  df-nn 12229  df-n0 12500  df-z 12587  df-uz 12858  df-seq 14034  df-itco 49439

This theorem is referenced by:  itcovalpc  49452