Theorem eulerpartlemelr 30419

Description: Lemma for eulerpart 30444. (Contributed by Thierry Arnoux, 8-Aug-2018.)

Hypotheses

Ref	Expression
eulerpartlems.r	⊢ 𝑅 = {𝑓 ∣ (◡𝑓 “ ℕ) ∈ Fin}
eulerpartlems.s	⊢ 𝑆 = (𝑓 ∈ ((ℕ0 ↑𝑚 ℕ) ∩ 𝑅) ↦ Σ𝑘 ∈ ℕ ((𝑓‘𝑘) · 𝑘))

Assertion

Ref	Expression
eulerpartlemelr	⊢ (𝐴 ∈ ((ℕ0 ↑𝑚 ℕ) ∩ 𝑅) → (𝐴:ℕ⟶ℕ0 ∧ (◡𝐴 “ ℕ) ∈ Fin))

Distinct variable groups:   𝑓,𝑘,𝐴   𝑅,𝑓,𝑘

Allowed substitution hints:   𝑆(𝑓,𝑘)

Proof of Theorem eulerpartlemelr

Step	Hyp	Ref	Expression
1		inss1 3833	. . . 4 ⊢ ((ℕ0 ↑𝑚 ℕ) ∩ 𝑅) ⊆ (ℕ0 ↑𝑚 ℕ)
2	1	sseli 3599	. . 3 ⊢ (𝐴 ∈ ((ℕ0 ↑𝑚 ℕ) ∩ 𝑅) → 𝐴 ∈ (ℕ0 ↑𝑚 ℕ))
3		elmapi 7879	. . 3 ⊢ (𝐴 ∈ (ℕ0 ↑𝑚 ℕ) → 𝐴:ℕ⟶ℕ0)
4	2, 3	syl 17	. 2 ⊢ (𝐴 ∈ ((ℕ0 ↑𝑚 ℕ) ∩ 𝑅) → 𝐴:ℕ⟶ℕ0)
5		inss2 3834	. . . 4 ⊢ ((ℕ0 ↑𝑚 ℕ) ∩ 𝑅) ⊆ 𝑅
6	5	sseli 3599	. . 3 ⊢ (𝐴 ∈ ((ℕ0 ↑𝑚 ℕ) ∩ 𝑅) → 𝐴 ∈ 𝑅)
7		cnveq 5296	. . . . . 6 ⊢ (𝑓 = 𝐴 → ◡𝑓 = ◡𝐴)
8	7	imaeq1d 5465	. . . . 5 ⊢ (𝑓 = 𝐴 → (◡𝑓 “ ℕ) = (◡𝐴 “ ℕ))
9	8	eleq1d 2686	. . . 4 ⊢ (𝑓 = 𝐴 → ((◡𝑓 “ ℕ) ∈ Fin ↔ (◡𝐴 “ ℕ) ∈ Fin))
10		eulerpartlems.r	. . . 4 ⊢ 𝑅 = {𝑓 ∣ (◡𝑓 “ ℕ) ∈ Fin}
11	9, 10	elab2g 3353	. . 3 ⊢ (𝐴 ∈ ((ℕ0 ↑𝑚 ℕ) ∩ 𝑅) → (𝐴 ∈ 𝑅 ↔ (◡𝐴 “ ℕ) ∈ Fin))
12	6, 11	mpbid 222	. 2 ⊢ (𝐴 ∈ ((ℕ0 ↑𝑚 ℕ) ∩ 𝑅) → (◡𝐴 “ ℕ) ∈ Fin)
13	4, 12	jca 554	1 ⊢ (𝐴 ∈ ((ℕ0 ↑𝑚 ℕ) ∩ 𝑅) → (𝐴:ℕ⟶ℕ0 ∧ (◡𝐴 “ ℕ) ∈ Fin))

Syntax hints:   → wi 4   ∧ wa 384   = wceq 1483   ∈ wcel 1990  {cab 2608   ∩ cin 3573   ↦ cmpt 4729  ^◡ccnv 5113   “ cima 5117  ⟶wf 5884  ‘cfv 5888  (class class class)co 6650   ↑_𝑚 cmap 7857  Fincfn 7955   · cmul 9941  ℕcn 11020  ℕ₀cn0 11292  Σcsu 14416

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-fv 5896  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-1st 7168  df-2nd 7169  df-map 7859

This theorem is referenced by:  eulerpartlemsv2  30420  eulerpartlemsf  30421  eulerpartlems  30422  eulerpartlemsv3  30423  eulerpartlemgc  30424