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Theorem ntrivcvgmullem 15879

Description: Lemma for ntrivcvgmul 15880. (Contributed by Scott Fenton, 19-Dec-2017.)

**Hypotheses**
Ref	Expression
ntrivcvgmullem.1	⊢ 𝑍 = (ℤ_≥‘𝑀)
ntrivcvgmullem.2	⊢ (𝜑 → 𝑁 ∈ 𝑍)
ntrivcvgmullem.3	⊢ (𝜑 → 𝑃 ∈ 𝑍)
ntrivcvgmullem.4	⊢ (𝜑 → 𝑋 ≠ 0)
ntrivcvgmullem.5	⊢ (𝜑 → 𝑌 ≠ 0)
ntrivcvgmullem.6	⊢ (𝜑 → seq𝑁( · , 𝐹) ⇝ 𝑋)
ntrivcvgmullem.7	⊢ (𝜑 → seq𝑃( · , 𝐺) ⇝ 𝑌)
ntrivcvgmullem.8	⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) ∈ ℂ)
ntrivcvgmullem.9	⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐺‘𝑘) ∈ ℂ)
ntrivcvgmullem.a	⊢ (𝜑 → 𝑁 ≤ 𝑃)
ntrivcvgmullem.b	⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐻‘𝑘) = ((𝐹‘𝑘) · (𝐺‘𝑘)))

**Assertion**
Ref	Expression
ntrivcvgmullem	⊢ (𝜑 → ∃𝑞 ∈ 𝑍 ∃𝑤(𝑤 ≠ 0 ∧ seq𝑞( · , 𝐻) ⇝ 𝑤))

Distinct variable groups: 𝑤,𝐹 𝐻,𝑞,𝑤 𝑃,𝑞,𝑤 𝑤,𝑌 𝑍,𝑞 𝑘,𝐹 𝑘,𝐺 𝑘,𝐻 𝜑,𝑘 𝑃,𝑘 𝑘,𝑍 𝑘,𝑁 Allowed substitution hints: 𝜑(𝑤,𝑞) 𝐹(𝑞) 𝐺(𝑤,𝑞) 𝑀(𝑤,𝑘,𝑞) 𝑁(𝑤,𝑞) 𝑋(𝑤,𝑘,𝑞) 𝑌(𝑘,𝑞) 𝑍(𝑤)

Proof of Theorem ntrivcvgmullem Dummy variable 𝑗 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		ntrivcvgmullem.3	. 2 ⊢ (𝜑 → 𝑃 ∈ 𝑍)
2		eqid 2725	. . . . . . 7 ⊢ (ℤ_≥‘𝑁) = (ℤ_≥‘𝑁)
3		ntrivcvgmullem.a	. . . . . . . 8 ⊢ (𝜑 → 𝑁 ≤ 𝑃)
4		ntrivcvgmullem.1	. . . . . . . . . . 11 ⊢ 𝑍 = (ℤ_≥‘𝑀)
5		uzssz 12873	. . . . . . . . . . 11 ⊢ (ℤ_≥‘𝑀) ⊆ ℤ
6	4, 5	eqsstri 4012	. . . . . . . . . 10 ⊢ 𝑍 ⊆ ℤ
7		ntrivcvgmullem.2	. . . . . . . . . 10 ⊢ (𝜑 → 𝑁 ∈ 𝑍)
8	6, 7	sselid 3975	. . . . . . . . 9 ⊢ (𝜑 → 𝑁 ∈ ℤ)
9	6, 1	sselid 3975	. . . . . . . . 9 ⊢ (𝜑 → 𝑃 ∈ ℤ)
10		eluz 12866	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℤ ∧ 𝑃 ∈ ℤ) → (𝑃 ∈ (ℤ_≥‘𝑁) ↔ 𝑁 ≤ 𝑃))
11	8, 9, 10	syl2anc 582	. . . . . . . 8 ⊢ (𝜑 → (𝑃 ∈ (ℤ_≥‘𝑁) ↔ 𝑁 ≤ 𝑃))
12	3, 11	mpbird 256	. . . . . . 7 ⊢ (𝜑 → 𝑃 ∈ (ℤ_≥‘𝑁))
13		ntrivcvgmullem.6	. . . . . . 7 ⊢ (𝜑 → seq𝑁( · , 𝐹) ⇝ 𝑋)
14		ntrivcvgmullem.4	. . . . . . 7 ⊢ (𝜑 → 𝑋 ≠ 0)
15	4	uztrn2 12871	. . . . . . . . 9 ⊢ ((𝑁 ∈ 𝑍 ∧ 𝑘 ∈ (ℤ_≥‘𝑁)) → 𝑘 ∈ 𝑍)
16	7, 15	sylan 578	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ_≥‘𝑁)) → 𝑘 ∈ 𝑍)
17		ntrivcvgmullem.8	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) ∈ ℂ)
18	16, 17	syldan 589	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ_≥‘𝑁)) → (𝐹‘𝑘) ∈ ℂ)
19	2, 12, 13, 14, 18	ntrivcvgtail 15878	. . . . . 6 ⊢ (𝜑 → (( ⇝ ‘seq𝑃( · , 𝐹)) ≠ 0 ∧ seq𝑃( · , 𝐹) ⇝ ( ⇝ ‘seq𝑃( · , 𝐹))))
20	19	simprd 494	. . . . 5 ⊢ (𝜑 → seq𝑃( · , 𝐹) ⇝ ( ⇝ ‘seq𝑃( · , 𝐹)))
21		climcl 15475	. . . . 5 ⊢ (seq𝑃( · , 𝐹) ⇝ ( ⇝ ‘seq𝑃( · , 𝐹)) → ( ⇝ ‘seq𝑃( · , 𝐹)) ∈ ℂ)
22	20, 21	syl 17	. . . 4 ⊢ (𝜑 → ( ⇝ ‘seq𝑃( · , 𝐹)) ∈ ℂ)
23		ntrivcvgmullem.7	. . . . 5 ⊢ (𝜑 → seq𝑃( · , 𝐺) ⇝ 𝑌)
24		climcl 15475	. . . . 5 ⊢ (seq𝑃( · , 𝐺) ⇝ 𝑌 → 𝑌 ∈ ℂ)
25	23, 24	syl 17	. . . 4 ⊢ (𝜑 → 𝑌 ∈ ℂ)
26	19	simpld 493	. . . 4 ⊢ (𝜑 → ( ⇝ ‘seq𝑃( · , 𝐹)) ≠ 0)
27		ntrivcvgmullem.5	. . . 4 ⊢ (𝜑 → 𝑌 ≠ 0)
28	22, 25, 26, 27	mulne0d 11896	. . 3 ⊢ (𝜑 → (( ⇝ ‘seq𝑃( · , 𝐹)) · 𝑌) ≠ 0)
29		eqid 2725	. . . 4 ⊢ (ℤ_≥‘𝑃) = (ℤ_≥‘𝑃)
30		seqex 14000	. . . . 5 ⊢ seq𝑃( · , 𝐻) ∈ V
31	30	a1i 11	. . . 4 ⊢ (𝜑 → seq𝑃( · , 𝐻) ∈ V)
32	4	uztrn2 12871	. . . . . . . 8 ⊢ ((𝑃 ∈ 𝑍 ∧ 𝑘 ∈ (ℤ_≥‘𝑃)) → 𝑘 ∈ 𝑍)
33	1, 32	sylan 578	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ_≥‘𝑃)) → 𝑘 ∈ 𝑍)
34	33, 17	syldan 589	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ_≥‘𝑃)) → (𝐹‘𝑘) ∈ ℂ)
35	29, 9, 34	prodf 15865	. . . . 5 ⊢ (𝜑 → seq𝑃( · , 𝐹):(ℤ_≥‘𝑃)⟶ℂ)
36	35	ffvelcdmda 7091	. . . 4 ⊢ ((𝜑 ∧ 𝑗 ∈ (ℤ_≥‘𝑃)) → (seq𝑃( · , 𝐹)‘𝑗) ∈ ℂ)
37		ntrivcvgmullem.9	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐺‘𝑘) ∈ ℂ)
38	33, 37	syldan 589	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ_≥‘𝑃)) → (𝐺‘𝑘) ∈ ℂ)
39	29, 9, 38	prodf 15865	. . . . 5 ⊢ (𝜑 → seq𝑃( · , 𝐺):(ℤ_≥‘𝑃)⟶ℂ)
40	39	ffvelcdmda 7091	. . . 4 ⊢ ((𝜑 ∧ 𝑗 ∈ (ℤ_≥‘𝑃)) → (seq𝑃( · , 𝐺)‘𝑗) ∈ ℂ)
41		simpr 483	. . . . 5 ⊢ ((𝜑 ∧ 𝑗 ∈ (ℤ_≥‘𝑃)) → 𝑗 ∈ (ℤ_≥‘𝑃))
42		simpll 765	. . . . . 6 ⊢ (((𝜑 ∧ 𝑗 ∈ (ℤ_≥‘𝑃)) ∧ 𝑘 ∈ (𝑃...𝑗)) → 𝜑)
43	1	adantr 479	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑗 ∈ (ℤ_≥‘𝑃)) → 𝑃 ∈ 𝑍)
44		elfzuz 13529	. . . . . . 7 ⊢ (𝑘 ∈ (𝑃...𝑗) → 𝑘 ∈ (ℤ_≥‘𝑃))
45	43, 44, 32	syl2an 594	. . . . . 6 ⊢ (((𝜑 ∧ 𝑗 ∈ (ℤ_≥‘𝑃)) ∧ 𝑘 ∈ (𝑃...𝑗)) → 𝑘 ∈ 𝑍)
46	42, 45, 17	syl2anc 582	. . . . 5 ⊢ (((𝜑 ∧ 𝑗 ∈ (ℤ_≥‘𝑃)) ∧ 𝑘 ∈ (𝑃...𝑗)) → (𝐹‘𝑘) ∈ ℂ)
47	42, 45, 37	syl2anc 582	. . . . 5 ⊢ (((𝜑 ∧ 𝑗 ∈ (ℤ_≥‘𝑃)) ∧ 𝑘 ∈ (𝑃...𝑗)) → (𝐺‘𝑘) ∈ ℂ)
48		ntrivcvgmullem.b	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐻‘𝑘) = ((𝐹‘𝑘) · (𝐺‘𝑘)))
49	42, 45, 48	syl2anc 582	. . . . 5 ⊢ (((𝜑 ∧ 𝑗 ∈ (ℤ_≥‘𝑃)) ∧ 𝑘 ∈ (𝑃...𝑗)) → (𝐻‘𝑘) = ((𝐹‘𝑘) · (𝐺‘𝑘)))
50	41, 46, 47, 49	prodfmul 15868	. . . 4 ⊢ ((𝜑 ∧ 𝑗 ∈ (ℤ_≥‘𝑃)) → (seq𝑃( · , 𝐻)‘𝑗) = ((seq𝑃( · , 𝐹)‘𝑗) · (seq𝑃( · , 𝐺)‘𝑗)))
51	29, 9, 20, 31, 23, 36, 40, 50	climmul 15609	. . 3 ⊢ (𝜑 → seq𝑃( · , 𝐻) ⇝ (( ⇝ ‘seq𝑃( · , 𝐹)) · 𝑌))
52		ovex 7450	. . . 4 ⊢ (( ⇝ ‘seq𝑃( · , 𝐹)) · 𝑌) ∈ V
53		neeq1 2993	. . . . 5 ⊢ (𝑤 = (( ⇝ ‘seq𝑃( · , 𝐹)) · 𝑌) → (𝑤 ≠ 0 ↔ (( ⇝ ‘seq𝑃( · , 𝐹)) · 𝑌) ≠ 0))
54		breq2 5152	. . . . 5 ⊢ (𝑤 = (( ⇝ ‘seq𝑃( · , 𝐹)) · 𝑌) → (seq𝑃( · , 𝐻) ⇝ 𝑤 ↔ seq𝑃( · , 𝐻) ⇝ (( ⇝ ‘seq𝑃( · , 𝐹)) · 𝑌)))
55	53, 54	anbi12d 630	. . . 4 ⊢ (𝑤 = (( ⇝ ‘seq𝑃( · , 𝐹)) · 𝑌) → ((𝑤 ≠ 0 ∧ seq𝑃( · , 𝐻) ⇝ 𝑤) ↔ ((( ⇝ ‘seq𝑃( · , 𝐹)) · 𝑌) ≠ 0 ∧ seq𝑃( · , 𝐻) ⇝ (( ⇝ ‘seq𝑃( · , 𝐹)) · 𝑌))))
56	52, 55	spcev 3591	. . 3 ⊢ (((( ⇝ ‘seq𝑃( · , 𝐹)) · 𝑌) ≠ 0 ∧ seq𝑃( · , 𝐻) ⇝ (( ⇝ ‘seq𝑃( · , 𝐹)) · 𝑌)) → ∃𝑤(𝑤 ≠ 0 ∧ seq𝑃( · , 𝐻) ⇝ 𝑤))
57	28, 51, 56	syl2anc 582	. 2 ⊢ (𝜑 → ∃𝑤(𝑤 ≠ 0 ∧ seq𝑃( · , 𝐻) ⇝ 𝑤))
58		seqeq1 14001	. . . . . 6 ⊢ (𝑞 = 𝑃 → seq𝑞( · , 𝐻) = seq𝑃( · , 𝐻))
59	58	breq1d 5158	. . . . 5 ⊢ (𝑞 = 𝑃 → (seq𝑞( · , 𝐻) ⇝ 𝑤 ↔ seq𝑃( · , 𝐻) ⇝ 𝑤))
60	59	anbi2d 628	. . . 4 ⊢ (𝑞 = 𝑃 → ((𝑤 ≠ 0 ∧ seq𝑞( · , 𝐻) ⇝ 𝑤) ↔ (𝑤 ≠ 0 ∧ seq𝑃( · , 𝐻) ⇝ 𝑤)))
61	60	exbidv 1916	. . 3 ⊢ (𝑞 = 𝑃 → (∃𝑤(𝑤 ≠ 0 ∧ seq𝑞( · , 𝐻) ⇝ 𝑤) ↔ ∃𝑤(𝑤 ≠ 0 ∧ seq𝑃( · , 𝐻) ⇝ 𝑤)))
62	61	rspcev 3607	. 2 ⊢ ((𝑃 ∈ 𝑍 ∧ ∃𝑤(𝑤 ≠ 0 ∧ seq𝑃( · , 𝐻) ⇝ 𝑤)) → ∃𝑞 ∈ 𝑍 ∃𝑤(𝑤 ≠ 0 ∧ seq𝑞( · , 𝐻) ⇝ 𝑤))
63	1, 57, 62	syl2anc 582	1 ⊢ (𝜑 → ∃𝑞 ∈ 𝑍 ∃𝑤(𝑤 ≠ 0 ∧ seq𝑞( · , 𝐻) ⇝ 𝑤))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 394 = wceq 1533 ∃wex 1773 ∈ wcel 2098 ≠ wne 2930 ∃wrex 3060 Vcvv 3463 class class class wbr 5148 ‘cfv 6547 (class class class)co 7417 ℂcc 11136 0cc0 11138 · cmul 11143 ≤ cle 11279 ℤcz 12588 ℤ_≥cuz 12852 ...cfz 13516 seqcseq 13998 ⇝ cli 15460

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2166 ax-ext 2696 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5364 ax-pr 5428 ax-un 7739 ax-inf2 9664 ax-cnex 11194 ax-resscn 11195 ax-1cn 11196 ax-icn 11197 ax-addcl 11198 ax-addrcl 11199 ax-mulcl 11200 ax-mulrcl 11201 ax-mulcom 11202 ax-addass 11203 ax-mulass 11204 ax-distr 11205 ax-i2m1 11206 ax-1ne0 11207 ax-1rid 11208 ax-rnegex 11209 ax-rrecex 11210 ax-cnre 11211 ax-pre-lttri 11212 ax-pre-lttrn 11213 ax-pre-ltadd 11214 ax-pre-mulgt0 11215 ax-pre-sup 11216

This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2703 df-cleq 2717 df-clel 2802 df-nfc 2877 df-ne 2931 df-nel 3037 df-ral 3052 df-rex 3061 df-rmo 3364 df-reu 3365 df-rab 3420 df-v 3465 df-sbc 3775 df-csb 3891 df-dif 3948 df-un 3950 df-in 3952 df-ss 3962 df-pss 3965 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-op 4636 df-uni 4909 df-iun 4998 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5575 df-eprel 5581 df-po 5589 df-so 5590 df-fr 5632 df-we 5634 df-xp 5683 df-rel 5684 df-cnv 5685 df-co 5686 df-dm 5687 df-rn 5688 df-res 5689 df-ima 5690 df-pred 6305 df-ord 6372 df-on 6373 df-lim 6374 df-suc 6375 df-iota 6499 df-fun 6549 df-fn 6550 df-f 6551 df-f1 6552 df-fo 6553 df-f1o 6554 df-fv 6555 df-riota 7373 df-ov 7420 df-oprab 7421 df-mpo 7422 df-om 7870 df-1st 7992 df-2nd 7993 df-frecs 8285 df-wrecs 8316 df-recs 8390 df-rdg 8429 df-er 8723 df-en 8963 df-dom 8964 df-sdom 8965 df-sup 9465 df-pnf 11280 df-mnf 11281 df-xr 11282 df-ltxr 11283 df-le 11284 df-sub 11476 df-neg 11477 df-div 11902 df-nn 12243 df-2 12305 df-3 12306 df-n0 12503 df-z 12589 df-uz 12853 df-rp 13007 df-fz 13517 df-fzo 13660 df-seq 13999 df-exp 14059 df-cj 15078 df-re 15079 df-im 15080 df-sqrt 15214 df-abs 15215 df-clim 15464

This theorem is referenced by: ntrivcvgmul 15880

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