quart1cl - Metamath Proof Explorer

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Theorem quart1cl 26896

Description: Closure lemmas for quart 26903. (Contributed by Mario Carneiro, 7-May-2015.)

**Hypotheses**
Ref	Expression
quart1.a	⊢ (𝜑 → 𝐴 ∈ ℂ)
quart1.b	⊢ (𝜑 → 𝐵 ∈ ℂ)
quart1.c	⊢ (𝜑 → 𝐶 ∈ ℂ)
quart1.d	⊢ (𝜑 → 𝐷 ∈ ℂ)
quart1.p	⊢ (𝜑 → 𝑃 = (𝐵 − ((3 / 8) · (𝐴↑2))))
quart1.q	⊢ (𝜑 → 𝑄 = ((𝐶 − ((𝐴 · 𝐵) / 2)) + ((𝐴↑3) / 8)))
quart1.r	⊢ (𝜑 → 𝑅 = ((𝐷 − ((𝐶 · 𝐴) / 4)) + ((((𝐴↑2) · 𝐵) / ;16) − ((3 / ;;256) · (𝐴↑4)))))

**Assertion**
Ref	Expression
quart1cl	⊢ (𝜑 → (𝑃 ∈ ℂ ∧ 𝑄 ∈ ℂ ∧ 𝑅 ∈ ℂ))

**Proof of Theorem quart1cl**
Step	Hyp	Ref	Expression
1		quart1.p	. . 3 ⊢ (𝜑 → 𝑃 = (𝐵 − ((3 / 8) · (𝐴↑2))))
2		quart1.b	. . . 4 ⊢ (𝜑 → 𝐵 ∈ ℂ)
3		3cn 12296	. . . . . 6 ⊢ 3 ∈ ℂ
4		8cn 12312	. . . . . 6 ⊢ 8 ∈ ℂ
5		8nn 12310	. . . . . . 7 ⊢ 8 ∈ ℕ
6	5	nnne0i 12250	. . . . . 6 ⊢ 8 ≠ 0
7	3, 4, 6	divcli 11930	. . . . 5 ⊢ (3 / 8) ∈ ℂ
8		quart1.a	. . . . . 6 ⊢ (𝜑 → 𝐴 ∈ ℂ)
9	8	sqcld 14154	. . . . 5 ⊢ (𝜑 → (𝐴↑2) ∈ ℂ)
10		mulcl 11154	. . . . 5 ⊢ (((3 / 8) ∈ ℂ ∧ (𝐴↑2) ∈ ℂ) → ((3 / 8) · (𝐴↑2)) ∈ ℂ)
11	7, 9, 10	sylancr 596	. . . 4 ⊢ (𝜑 → ((3 / 8) · (𝐴↑2)) ∈ ℂ)
12	2, 11	subcld 11539	. . 3 ⊢ (𝜑 → (𝐵 − ((3 / 8) · (𝐴↑2))) ∈ ℂ)
13	1, 12	eqeltrd 2861	. 2 ⊢ (𝜑 → 𝑃 ∈ ℂ)
14		quart1.q	. . 3 ⊢ (𝜑 → 𝑄 = ((𝐶 − ((𝐴 · 𝐵) / 2)) + ((𝐴↑3) / 8)))
15		quart1.c	. . . . 5 ⊢ (𝜑 → 𝐶 ∈ ℂ)
16	8, 2	mulcld 11199	. . . . . 6 ⊢ (𝜑 → (𝐴 · 𝐵) ∈ ℂ)
17	16	halfcld 12463	. . . . 5 ⊢ (𝜑 → ((𝐴 · 𝐵) / 2) ∈ ℂ)
18	15, 17	subcld 11539	. . . 4 ⊢ (𝜑 → (𝐶 − ((𝐴 · 𝐵) / 2)) ∈ ℂ)
19		3nn0 12496	. . . . . 6 ⊢ 3 ∈ ℕ₀
20		expcl 14089	. . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ 3 ∈ ℕ₀) → (𝐴↑3) ∈ ℂ)
21	8, 19, 20	sylancl 595	. . . . 5 ⊢ (𝜑 → (𝐴↑3) ∈ ℂ)
22	4	a1i 11	. . . . 5 ⊢ (𝜑 → 8 ∈ ℂ)
23	6	a1i 11	. . . . 5 ⊢ (𝜑 → 8 ≠ 0)
24	21, 22, 23	divcld 11964	. . . 4 ⊢ (𝜑 → ((𝐴↑3) / 8) ∈ ℂ)
25	18, 24	addcld 11198	. . 3 ⊢ (𝜑 → ((𝐶 − ((𝐴 · 𝐵) / 2)) + ((𝐴↑3) / 8)) ∈ ℂ)
26	14, 25	eqeltrd 2861	. 2 ⊢ (𝜑 → 𝑄 ∈ ℂ)
27		quart1.r	. . 3 ⊢ (𝜑 → 𝑅 = ((𝐷 − ((𝐶 · 𝐴) / 4)) + ((((𝐴↑2) · 𝐵) / ;16) − ((3 / ;;256) · (𝐴↑4)))))
28		quart1.d	. . . . 5 ⊢ (𝜑 → 𝐷 ∈ ℂ)
29	15, 8	mulcld 11199	. . . . . 6 ⊢ (𝜑 → (𝐶 · 𝐴) ∈ ℂ)
30		4cn 12300	. . . . . . 7 ⊢ 4 ∈ ℂ
31	30	a1i 11	. . . . . 6 ⊢ (𝜑 → 4 ∈ ℂ)
32		4ne0 12326	. . . . . . 7 ⊢ 4 ≠ 0
33	32	a1i 11	. . . . . 6 ⊢ (𝜑 → 4 ≠ 0)
34	29, 31, 33	divcld 11964	. . . . 5 ⊢ (𝜑 → ((𝐶 · 𝐴) / 4) ∈ ℂ)
35	28, 34	subcld 11539	. . . 4 ⊢ (𝜑 → (𝐷 − ((𝐶 · 𝐴) / 4)) ∈ ℂ)
36	9, 2	mulcld 11199	. . . . . 6 ⊢ (𝜑 → ((𝐴↑2) · 𝐵) ∈ ℂ)
37		1nn0 12494	. . . . . . . . 9 ⊢ 1 ∈ ℕ₀
38		6nn 12304	. . . . . . . . 9 ⊢ 6 ∈ ℕ
39	37, 38	decnncl 12709	. . . . . . . 8 ⊢ ;16 ∈ ℕ
40	39	nncni 12217	. . . . . . 7 ⊢ ;16 ∈ ℂ
41	40	a1i 11	. . . . . 6 ⊢ (𝜑 → ;16 ∈ ℂ)
42	39	nnne0i 12250	. . . . . . 7 ⊢ ;16 ≠ 0
43	42	a1i 11	. . . . . 6 ⊢ (𝜑 → ;16 ≠ 0)
44	36, 41, 43	divcld 11964	. . . . 5 ⊢ (𝜑 → (((𝐴↑2) · 𝐵) / ;16) ∈ ℂ)
45		25nn0 12704	. . . . . . . . 9 ⊢ ;25 ∈ ℕ₀
46	45, 38	decnncl 12709	. . . . . . . 8 ⊢ ;;256 ∈ ℕ
47	46	nncni 12217	. . . . . . 7 ⊢ ;;256 ∈ ℂ
48	46	nnne0i 12250	. . . . . . 7 ⊢ ;;256 ≠ 0
49	3, 47, 48	divcli 11930	. . . . . 6 ⊢ (3 / ;;256) ∈ ℂ
50		4nn0 12497	. . . . . . 7 ⊢ 4 ∈ ℕ₀
51		expcl 14089	. . . . . . 7 ⊢ ((𝐴 ∈ ℂ ∧ 4 ∈ ℕ₀) → (𝐴↑4) ∈ ℂ)
52	8, 50, 51	sylancl 595	. . . . . 6 ⊢ (𝜑 → (𝐴↑4) ∈ ℂ)
53		mulcl 11154	. . . . . 6 ⊢ (((3 / ;;256) ∈ ℂ ∧ (𝐴↑4) ∈ ℂ) → ((3 / ;;256) · (𝐴↑4)) ∈ ℂ)
54	49, 52, 53	sylancr 596	. . . . 5 ⊢ (𝜑 → ((3 / ;;256) · (𝐴↑4)) ∈ ℂ)
55	44, 54	subcld 11539	. . . 4 ⊢ (𝜑 → ((((𝐴↑2) · 𝐵) / ;16) − ((3 / ;;256) · (𝐴↑4))) ∈ ℂ)
56	35, 55	addcld 11198	. . 3 ⊢ (𝜑 → ((𝐷 − ((𝐶 · 𝐴) / 4)) + ((((𝐴↑2) · 𝐵) / ;16) − ((3 / ;;256) · (𝐴↑4)))) ∈ ℂ)
57	27, 56	eqeltrd 2861	. 2 ⊢ (𝜑 → 𝑅 ∈ ℂ)
58	13, 26, 57	3jca 1140	1 ⊢ (𝜑 → (𝑃 ∈ ℂ ∧ 𝑄 ∈ ℂ ∧ 𝑅 ∈ ℂ))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ w3a 1097 = wceq 1559 ∈ wcel 2141 ≠ wne 2956 (class class class)co 7392 ℂcc 11068 0cc0 11070 1c1 11071 + caddc 11073 · cmul 11075 − cmin 11411 / cdiv 11841 2c2 12269 3c3 12270 4c4 12271 5c5 12272 6c6 12273 8c8 12275 ℕ₀cn0 12478 cdc 12685 ↑cexp 14071

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5245 ax-nul 5255 ax-pow 5321 ax-pr 5389 ax-un 7714 ax-cnex 11126 ax-resscn 11127 ax-1cn 11128 ax-icn 11129 ax-addcl 11130 ax-addrcl 11131 ax-mulcl 11132 ax-mulrcl 11133 ax-mulcom 11134 ax-addass 11135 ax-mulass 11136 ax-distr 11137 ax-i2m1 11138 ax-1ne0 11139 ax-1rid 11140 ax-rnegex 11141 ax-rrecex 11142 ax-cnre 11143 ax-pre-lttri 11144 ax-pre-lttrn 11145 ax-pre-ltadd 11146 ax-pre-mulgt0 11147

This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1098 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3061 df-ral 3076 df-rex 3086 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3455 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-iun 4950 df-br 5100 df-opab 5162 df-mpt 5181 df-tr 5207 df-id 5540 df-eprel 5545 df-po 5553 df-so 5554 df-fr 5598 df-we 5600 df-xp 5651 df-rel 5652 df-cnv 5653 df-co 5654 df-dm 5655 df-rn 5656 df-res 5657 df-ima 5658 df-pred 6284 df-ord 6345 df-on 6346 df-lim 6347 df-suc 6348 df-iota 6473 df-fun 6519 df-fn 6520 df-f 6521 df-f1 6522 df-fo 6523 df-f1o 6524 df-fv 6525 df-riota 7349 df-ov 7395 df-oprab 7396 df-mpo 7397 df-om 7843 df-2nd 7967 df-frecs 8257 df-wrecs 8288 df-recs 8337 df-rdg 8376 df-er 8673 df-en 8924 df-dom 8925 df-sdom 8926 df-pnf 11215 df-mnf 11216 df-xr 11217 df-ltxr 11218 df-le 11219 df-sub 11413 df-neg 11414 df-div 11842 df-nn 12208 df-2 12277 df-3 12278 df-4 12279 df-5 12280 df-6 12281 df-7 12282 df-8 12283 df-9 12284 df-n0 12479 df-z 12566 df-dec 12686 df-uz 12837 df-seq 14012 df-exp 14072

This theorem is referenced by: quart1 26898 quartlem2 26900 quartlem3 26901 quartlem4 26902 quart 26903

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