sumtp - Intuitionistic Logic Explorer

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Theorem sumtp 11579

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 2453	. . . . 5 ⊢ (𝜑 → 𝐶 ≠ 𝐴)
3		sumtp.3	. . . . . 6 ⊢ (𝜑 → 𝐵 ≠ 𝐶)
4	3	necomd 2453	. . . . 5 ⊢ (𝜑 → 𝐶 ≠ 𝐵)
5	2, 4	nelprd 3648	. . . 4 ⊢ (𝜑 → ¬ 𝐶 ∈ {𝐴, 𝐵})
6		disjsn 3684	. . . 4 ⊢ (({𝐴, 𝐵} ∩ {𝐶}) = ∅ ↔ ¬ 𝐶 ∈ {𝐴, 𝐵})
7	5, 6	sylibr 134	. . 3 ⊢ (𝜑 → ({𝐴, 𝐵} ∩ {𝐶}) = ∅)
8		df-tp 3630	. . . 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 1011	. . . 4 ⊢ (𝜑 → 𝐴 ∈ 𝑉)
12	10	simp2d 1012	. . . 4 ⊢ (𝜑 → 𝐵 ∈ 𝑊)
13	10	simp3d 1013	. . . 4 ⊢ (𝜑 → 𝐶 ∈ 𝑋)
14		sumtp.1	. . . 4 ⊢ (𝜑 → 𝐴 ≠ 𝐵)
15	11, 12, 13, 14, 1, 3	tpfidisj 6990	. . 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 2265	. . . . . . 7 ⊢ (𝑘 = 𝐴 → (𝐷 ∈ ℂ ↔ 𝐸 ∈ ℂ))
19		sumtp.f	. . . . . . . 8 ⊢ (𝑘 = 𝐵 → 𝐷 = 𝐹)
20	19	eleq1d 2265	. . . . . . 7 ⊢ (𝑘 = 𝐵 → (𝐷 ∈ ℂ ↔ 𝐹 ∈ ℂ))
21		sumtp.g	. . . . . . . 8 ⊢ (𝑘 = 𝐶 → 𝐷 = 𝐺)
22	21	eleq1d 2265	. . . . . . 7 ⊢ (𝑘 = 𝐶 → (𝐷 ∈ ℂ ↔ 𝐺 ∈ ℂ))
23	18, 20, 22	raltpg 3675	. . . . . 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 167	. . . 4 ⊢ (𝜑 → ∀𝑘 ∈ {𝐴, 𝐵, 𝐶}𝐷 ∈ ℂ)
26	25	r19.21bi 2585	. . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ {𝐴, 𝐵, 𝐶}) → 𝐷 ∈ ℂ)
27	7, 9, 15, 26	fsumsplit 11572	. 2 ⊢ (𝜑 → Σ𝑘 ∈ {𝐴, 𝐵, 𝐶}𝐷 = (Σ𝑘 ∈ {𝐴, 𝐵}𝐷 + Σ𝑘 ∈ {𝐶}𝐷))
28		3simpa 996	. . . . 5 ⊢ ((𝐸 ∈ ℂ ∧ 𝐹 ∈ ℂ ∧ 𝐺 ∈ ℂ) → (𝐸 ∈ ℂ ∧ 𝐹 ∈ ℂ))
29	16, 28	syl 14	. . . 4 ⊢ (𝜑 → (𝐸 ∈ ℂ ∧ 𝐹 ∈ ℂ))
30		3simpa 996	. . . . 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 11578	. . 3 ⊢ (𝜑 → Σ𝑘 ∈ {𝐴, 𝐵}𝐷 = (𝐸 + 𝐹))
33	16	simp3d 1013	. . . 4 ⊢ (𝜑 → 𝐺 ∈ ℂ)
34	21	sumsn 11576	. . . 4 ⊢ ((𝐶 ∈ 𝑋 ∧ 𝐺 ∈ ℂ) → Σ𝑘 ∈ {𝐶}𝐷 = 𝐺)
35	13, 33, 34	syl2anc 411	. . 3 ⊢ (𝜑 → Σ𝑘 ∈ {𝐶}𝐷 = 𝐺)
36	32, 35	oveq12d 5940	. 2 ⊢ (𝜑 → (Σ𝑘 ∈ {𝐴, 𝐵}𝐷 + Σ𝑘 ∈ {𝐶}𝐷) = ((𝐸 + 𝐹) + 𝐺))
37	27, 36	eqtrd 2229	1 ⊢ (𝜑 → Σ𝑘 ∈ {𝐴, 𝐵, 𝐶}𝐷 = ((𝐸 + 𝐹) + 𝐺))

Colors of variables: wff set class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 104 ↔ wb 105 ∧ w3a 980 = wceq 1364 ∈ wcel 2167 ≠ wne 2367 ∀wral 2475 ∪ cun 3155 ∩ cin 3156 ∅c0 3450 {csn 3622 {cpr 3623 {ctp 3624 (class class class)co 5922 ℂcc 7877 + caddc 7882 Σcsu 11518

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-coll 4148 ax-sep 4151 ax-nul 4159 ax-pow 4207 ax-pr 4242 ax-un 4468 ax-setind 4573 ax-iinf 4624 ax-cnex 7970 ax-resscn 7971 ax-1cn 7972 ax-1re 7973 ax-icn 7974 ax-addcl 7975 ax-addrcl 7976 ax-mulcl 7977 ax-mulrcl 7978 ax-addcom 7979 ax-mulcom 7980 ax-addass 7981 ax-mulass 7982 ax-distr 7983 ax-i2m1 7984 ax-0lt1 7985 ax-1rid 7986 ax-0id 7987 ax-rnegex 7988 ax-precex 7989 ax-cnre 7990 ax-pre-ltirr 7991 ax-pre-ltwlin 7992 ax-pre-lttrn 7993 ax-pre-apti 7994 ax-pre-ltadd 7995 ax-pre-mulgt0 7996 ax-pre-mulext 7997 ax-arch 7998 ax-caucvg 7999

This theorem depends on definitions: df-bi 117 df-dc 836 df-3or 981 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ne 2368 df-nel 2463 df-ral 2480 df-rex 2481 df-reu 2482 df-rmo 2483 df-rab 2484 df-v 2765 df-sbc 2990 df-csb 3085 df-dif 3159 df-un 3161 df-in 3163 df-ss 3170 df-nul 3451 df-if 3562 df-pw 3607 df-sn 3628 df-pr 3629 df-tp 3630 df-op 3631 df-uni 3840 df-int 3875 df-iun 3918 df-br 4034 df-opab 4095 df-mpt 4096 df-tr 4132 df-id 4328 df-po 4331 df-iso 4332 df-iord 4401 df-on 4403 df-ilim 4404 df-suc 4406 df-iom 4627 df-xp 4669 df-rel 4670 df-cnv 4671 df-co 4672 df-dm 4673 df-rn 4674 df-res 4675 df-ima 4676 df-iota 5219 df-fun 5260 df-fn 5261 df-f 5262 df-f1 5263 df-fo 5264 df-f1o 5265 df-fv 5266 df-isom 5267 df-riota 5877 df-ov 5925 df-oprab 5926 df-mpo 5927 df-1st 6198 df-2nd 6199 df-recs 6363 df-irdg 6428 df-frec 6449 df-1o 6474 df-oadd 6478 df-er 6592 df-en 6800 df-dom 6801 df-fin 6802 df-pnf 8063 df-mnf 8064 df-xr 8065 df-ltxr 8066 df-le 8067 df-sub 8199 df-neg 8200 df-reap 8602 df-ap 8609 df-div 8700 df-inn 8991 df-2 9049 df-3 9050 df-4 9051 df-n0 9250 df-z 9327 df-uz 9602 df-q 9694 df-rp 9729 df-fz 10084 df-fzo 10218 df-seqfrec 10540 df-exp 10631 df-ihash 10868 df-cj 11007 df-re 11008 df-im 11009 df-rsqrt 11163 df-abs 11164 df-clim 11444 df-sumdc 11519

This theorem is referenced by: (None)

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