sumtp - Intuitionistic Logic Explorer

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Theorem sumtp 11377

Description: A sum over a triple is the sum of the elements. (Contributed by AV, 24-Jul-2020.)

**Hypotheses**
Ref	Expression
sumtp.e	⊢ (𝑘 = 𝐴 → 𝐷 = 𝐸)
sumtp.f	⊢ (𝑘 = 𝐵 → 𝐷 = 𝐹)
sumtp.g	⊢ (𝑘 = 𝐶 → 𝐷 = 𝐺)
sumtp.c	⊢ (𝜑 → (𝐸 ∈ ℂ ∧ 𝐹 ∈ ℂ ∧ 𝐺 ∈ ℂ))
sumtp.v	⊢ (𝜑 → (𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊 ∧ 𝐶 ∈ 𝑋))
sumtp.1	⊢ (𝜑 → 𝐴 ≠ 𝐵)
sumtp.2	⊢ (𝜑 → 𝐴 ≠ 𝐶)
sumtp.3	⊢ (𝜑 → 𝐵 ≠ 𝐶)

**Assertion**
Ref	Expression
sumtp	⊢ (𝜑 → Σ𝑘 ∈ {𝐴, 𝐵, 𝐶}𝐷 = ((𝐸 + 𝐹) + 𝐺))

Distinct variable groups: 𝐴,𝑘 𝐵,𝑘 𝐶,𝑘 𝑘,𝐸 𝑘,𝐹 𝑘,𝐺 𝜑,𝑘 𝑘,𝑉 𝑘,𝑊 𝑘,𝑋 Allowed substitution hint: 𝐷(𝑘)

**Proof of Theorem sumtp**
Step	Hyp	Ref	Expression
1		sumtp.2	. . . . . 6 ⊢ (𝜑 → 𝐴 ≠ 𝐶)
2	1	necomd 2426	. . . . 5 ⊢ (𝜑 → 𝐶 ≠ 𝐴)
3		sumtp.3	. . . . . 6 ⊢ (𝜑 → 𝐵 ≠ 𝐶)
4	3	necomd 2426	. . . . 5 ⊢ (𝜑 → 𝐶 ≠ 𝐵)
5	2, 4	nelprd 3609	. . . 4 ⊢ (𝜑 → ¬ 𝐶 ∈ {𝐴, 𝐵})
6		disjsn 3645	. . . 4 ⊢ (({𝐴, 𝐵} ∩ {𝐶}) = ∅ ↔ ¬ 𝐶 ∈ {𝐴, 𝐵})
7	5, 6	sylibr 133	. . 3 ⊢ (𝜑 → ({𝐴, 𝐵} ∩ {𝐶}) = ∅)
8		df-tp 3591	. . . 4 ⊢ {𝐴, 𝐵, 𝐶} = ({𝐴, 𝐵} ∪ {𝐶})
9	8	a1i 9	. . 3 ⊢ (𝜑 → {𝐴, 𝐵, 𝐶} = ({𝐴, 𝐵} ∪ {𝐶}))
10		sumtp.v	. . . . 5 ⊢ (𝜑 → (𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊 ∧ 𝐶 ∈ 𝑋))
11	10	simp1d 1004	. . . 4 ⊢ (𝜑 → 𝐴 ∈ 𝑉)
12	10	simp2d 1005	. . . 4 ⊢ (𝜑 → 𝐵 ∈ 𝑊)
13	10	simp3d 1006	. . . 4 ⊢ (𝜑 → 𝐶 ∈ 𝑋)
14		sumtp.1	. . . 4 ⊢ (𝜑 → 𝐴 ≠ 𝐵)
15	11, 12, 13, 14, 1, 3	tpfidisj 6905	. . 3 ⊢ (𝜑 → {𝐴, 𝐵, 𝐶} ∈ Fin)
16		sumtp.c	. . . . 5 ⊢ (𝜑 → (𝐸 ∈ ℂ ∧ 𝐹 ∈ ℂ ∧ 𝐺 ∈ ℂ))
17		sumtp.e	. . . . . . . 8 ⊢ (𝑘 = 𝐴 → 𝐷 = 𝐸)
18	17	eleq1d 2239	. . . . . . 7 ⊢ (𝑘 = 𝐴 → (𝐷 ∈ ℂ ↔ 𝐸 ∈ ℂ))
19		sumtp.f	. . . . . . . 8 ⊢ (𝑘 = 𝐵 → 𝐷 = 𝐹)
20	19	eleq1d 2239	. . . . . . 7 ⊢ (𝑘 = 𝐵 → (𝐷 ∈ ℂ ↔ 𝐹 ∈ ℂ))
21		sumtp.g	. . . . . . . 8 ⊢ (𝑘 = 𝐶 → 𝐷 = 𝐺)
22	21	eleq1d 2239	. . . . . . 7 ⊢ (𝑘 = 𝐶 → (𝐷 ∈ ℂ ↔ 𝐺 ∈ ℂ))
23	18, 20, 22	raltpg 3636	. . . . . 6 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊 ∧ 𝐶 ∈ 𝑋) → (∀𝑘 ∈ {𝐴, 𝐵, 𝐶}𝐷 ∈ ℂ ↔ (𝐸 ∈ ℂ ∧ 𝐹 ∈ ℂ ∧ 𝐺 ∈ ℂ)))
24	10, 23	syl 14	. . . . 5 ⊢ (𝜑 → (∀𝑘 ∈ {𝐴, 𝐵, 𝐶}𝐷 ∈ ℂ ↔ (𝐸 ∈ ℂ ∧ 𝐹 ∈ ℂ ∧ 𝐺 ∈ ℂ)))
25	16, 24	mpbird 166	. . . 4 ⊢ (𝜑 → ∀𝑘 ∈ {𝐴, 𝐵, 𝐶}𝐷 ∈ ℂ)
26	25	r19.21bi 2558	. . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ {𝐴, 𝐵, 𝐶}) → 𝐷 ∈ ℂ)
27	7, 9, 15, 26	fsumsplit 11370	. 2 ⊢ (𝜑 → Σ𝑘 ∈ {𝐴, 𝐵, 𝐶}𝐷 = (Σ𝑘 ∈ {𝐴, 𝐵}𝐷 + Σ𝑘 ∈ {𝐶}𝐷))
28		3simpa 989	. . . . 5 ⊢ ((𝐸 ∈ ℂ ∧ 𝐹 ∈ ℂ ∧ 𝐺 ∈ ℂ) → (𝐸 ∈ ℂ ∧ 𝐹 ∈ ℂ))
29	16, 28	syl 14	. . . 4 ⊢ (𝜑 → (𝐸 ∈ ℂ ∧ 𝐹 ∈ ℂ))
30		3simpa 989	. . . . 5 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊 ∧ 𝐶 ∈ 𝑋) → (𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊))
31	10, 30	syl 14	. . . 4 ⊢ (𝜑 → (𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊))
32	17, 19, 29, 31, 14	sumpr 11376	. . 3 ⊢ (𝜑 → Σ𝑘 ∈ {𝐴, 𝐵}𝐷 = (𝐸 + 𝐹))
33	16	simp3d 1006	. . . 4 ⊢ (𝜑 → 𝐺 ∈ ℂ)
34	21	sumsn 11374	. . . 4 ⊢ ((𝐶 ∈ 𝑋 ∧ 𝐺 ∈ ℂ) → Σ𝑘 ∈ {𝐶}𝐷 = 𝐺)
35	13, 33, 34	syl2anc 409	. . 3 ⊢ (𝜑 → Σ𝑘 ∈ {𝐶}𝐷 = 𝐺)
36	32, 35	oveq12d 5871	. 2 ⊢ (𝜑 → (Σ𝑘 ∈ {𝐴, 𝐵}𝐷 + Σ𝑘 ∈ {𝐶}𝐷) = ((𝐸 + 𝐹) + 𝐺))
37	27, 36	eqtrd 2203	1 ⊢ (𝜑 → Σ𝑘 ∈ {𝐴, 𝐵, 𝐶}𝐷 = ((𝐸 + 𝐹) + 𝐺))

Colors of variables: wff set class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 103 ↔ wb 104 ∧ w3a 973 = wceq 1348 ∈ wcel 2141 ≠ wne 2340 ∀wral 2448 ∪ cun 3119 ∩ cin 3120 ∅c0 3414 {csn 3583 {cpr 3584 {ctp 3585 (class class class)co 5853 ℂcc 7772 + caddc 7777 Σcsu 11316

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 609 ax-in2 610 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-13 2143 ax-14 2144 ax-ext 2152 ax-coll 4104 ax-sep 4107 ax-nul 4115 ax-pow 4160 ax-pr 4194 ax-un 4418 ax-setind 4521 ax-iinf 4572 ax-cnex 7865 ax-resscn 7866 ax-1cn 7867 ax-1re 7868 ax-icn 7869 ax-addcl 7870 ax-addrcl 7871 ax-mulcl 7872 ax-mulrcl 7873 ax-addcom 7874 ax-mulcom 7875 ax-addass 7876 ax-mulass 7877 ax-distr 7878 ax-i2m1 7879 ax-0lt1 7880 ax-1rid 7881 ax-0id 7882 ax-rnegex 7883 ax-precex 7884 ax-cnre 7885 ax-pre-ltirr 7886 ax-pre-ltwlin 7887 ax-pre-lttrn 7888 ax-pre-apti 7889 ax-pre-ltadd 7890 ax-pre-mulgt0 7891 ax-pre-mulext 7892 ax-arch 7893 ax-caucvg 7894

This theorem depends on definitions: df-bi 116 df-dc 830 df-3or 974 df-3an 975 df-tru 1351 df-fal 1354 df-nf 1454 df-sb 1756 df-eu 2022 df-mo 2023 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ne 2341 df-nel 2436 df-ral 2453 df-rex 2454 df-reu 2455 df-rmo 2456 df-rab 2457 df-v 2732 df-sbc 2956 df-csb 3050 df-dif 3123 df-un 3125 df-in 3127 df-ss 3134 df-nul 3415 df-if 3527 df-pw 3568 df-sn 3589 df-pr 3590 df-tp 3591 df-op 3592 df-uni 3797 df-int 3832 df-iun 3875 df-br 3990 df-opab 4051 df-mpt 4052 df-tr 4088 df-id 4278 df-po 4281 df-iso 4282 df-iord 4351 df-on 4353 df-ilim 4354 df-suc 4356 df-iom 4575 df-xp 4617 df-rel 4618 df-cnv 4619 df-co 4620 df-dm 4621 df-rn 4622 df-res 4623 df-ima 4624 df-iota 5160 df-fun 5200 df-fn 5201 df-f 5202 df-f1 5203 df-fo 5204 df-f1o 5205 df-fv 5206 df-isom 5207 df-riota 5809 df-ov 5856 df-oprab 5857 df-mpo 5858 df-1st 6119 df-2nd 6120 df-recs 6284 df-irdg 6349 df-frec 6370 df-1o 6395 df-oadd 6399 df-er 6513 df-en 6719 df-dom 6720 df-fin 6721 df-pnf 7956 df-mnf 7957 df-xr 7958 df-ltxr 7959 df-le 7960 df-sub 8092 df-neg 8093 df-reap 8494 df-ap 8501 df-div 8590 df-inn 8879 df-2 8937 df-3 8938 df-4 8939 df-n0 9136 df-z 9213 df-uz 9488 df-q 9579 df-rp 9611 df-fz 9966 df-fzo 10099 df-seqfrec 10402 df-exp 10476 df-ihash 10710 df-cj 10806 df-re 10807 df-im 10808 df-rsqrt 10962 df-abs 10963 df-clim 11242 df-sumdc 11317

This theorem is referenced by: (None)

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