fsum2cn - Metamath Proof Explorer

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Theorem fsum2cn 24802

Description: Version of fsumcn 24801 for two-argument mappings. (Contributed by Mario Carneiro, 6-May-2014.)

**Hypotheses**
Ref	Expression
fsumcn.3	⊢ 𝐾 = (TopOpen‘ℂ_fld)
fsumcn.4	⊢ (𝜑 → 𝐽 ∈ (TopOn‘𝑋))
fsumcn.5	⊢ (𝜑 → 𝐴 ∈ Fin)
fsum2cn.7	⊢ (𝜑 → 𝐿 ∈ (TopOn‘𝑌))
fsum2cn.8	⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ 𝐵) ∈ ((𝐽 ×_t 𝐿) Cn 𝐾))

**Assertion**
Ref	Expression
fsum2cn	⊢ (𝜑 → (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ Σ𝑘 ∈ 𝐴 𝐵) ∈ ((𝐽 ×_t 𝐿) Cn 𝐾))

Distinct variable groups: 𝑥,𝑘,𝑦,𝐴 𝑘,𝐽,𝑥,𝑦 𝑘,𝐿 𝜑,𝑘,𝑥,𝑦 𝑘,𝐾,𝑥,𝑦 𝑘,𝑋,𝑥,𝑦 𝑘,𝑌,𝑥,𝑦 Allowed substitution hints: 𝐵(𝑥,𝑦,𝑘) 𝐿(𝑥,𝑦)

Proof of Theorem fsum2cn Dummy variables 𝑢 𝑣 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		nfcv 2899	. . . 4 ⊢ Ⅎ𝑢Σ𝑘 ∈ 𝐴 𝐵
2		nfcv 2899	. . . 4 ⊢ Ⅎ𝑣Σ𝑘 ∈ 𝐴 𝐵
3		nfcv 2899	. . . . 5 ⊢ Ⅎ𝑥𝐴
4		nfcv 2899	. . . . . 6 ⊢ Ⅎ𝑥𝑣
5		nfcsb1v 3917	. . . . . 6 ⊢ Ⅎ𝑥⦋𝑢 / 𝑥⦌𝐵
6	4, 5	nfcsbw 3919	. . . . 5 ⊢ Ⅎ𝑥⦋𝑣 / 𝑦⦌⦋𝑢 / 𝑥⦌𝐵
7	3, 6	nfsum 15670	. . . 4 ⊢ Ⅎ𝑥Σ𝑘 ∈ 𝐴 ⦋𝑣 / 𝑦⦌⦋𝑢 / 𝑥⦌𝐵
8		nfcv 2899	. . . . 5 ⊢ Ⅎ𝑦𝐴
9		nfcsb1v 3917	. . . . 5 ⊢ Ⅎ𝑦⦋𝑣 / 𝑦⦌⦋𝑢 / 𝑥⦌𝐵
10	8, 9	nfsum 15670	. . . 4 ⊢ Ⅎ𝑦Σ𝑘 ∈ 𝐴 ⦋𝑣 / 𝑦⦌⦋𝑢 / 𝑥⦌𝐵
11		csbeq1a 3906	. . . . . 6 ⊢ (𝑥 = 𝑢 → 𝐵 = ⦋𝑢 / 𝑥⦌𝐵)
12		csbeq1a 3906	. . . . . 6 ⊢ (𝑦 = 𝑣 → ⦋𝑢 / 𝑥⦌𝐵 = ⦋𝑣 / 𝑦⦌⦋𝑢 / 𝑥⦌𝐵)
13	11, 12	sylan9eq 2788	. . . . 5 ⊢ ((𝑥 = 𝑢 ∧ 𝑦 = 𝑣) → 𝐵 = ⦋𝑣 / 𝑦⦌⦋𝑢 / 𝑥⦌𝐵)
14	13	sumeq2sdv 15683	. . . 4 ⊢ ((𝑥 = 𝑢 ∧ 𝑦 = 𝑣) → Σ𝑘 ∈ 𝐴 𝐵 = Σ𝑘 ∈ 𝐴 ⦋𝑣 / 𝑦⦌⦋𝑢 / 𝑥⦌𝐵)
15	1, 2, 7, 10, 14	cbvmpo 7514	. . 3 ⊢ (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ Σ𝑘 ∈ 𝐴 𝐵) = (𝑢 ∈ 𝑋, 𝑣 ∈ 𝑌 ↦ Σ𝑘 ∈ 𝐴 ⦋𝑣 / 𝑦⦌⦋𝑢 / 𝑥⦌𝐵)
16		vex 3475	. . . . . . . 8 ⊢ 𝑢 ∈ V
17		vex 3475	. . . . . . . 8 ⊢ 𝑣 ∈ V
18	16, 17	op2ndd 8004	. . . . . . 7 ⊢ (𝑧 = ⟨𝑢, 𝑣⟩ → (2^nd ‘𝑧) = 𝑣)
19	18	csbeq1d 3896	. . . . . 6 ⊢ (𝑧 = ⟨𝑢, 𝑣⟩ → ⦋(2^nd ‘𝑧) / 𝑦⦌⦋(1^st ‘𝑧) / 𝑥⦌𝐵 = ⦋𝑣 / 𝑦⦌⦋(1^st ‘𝑧) / 𝑥⦌𝐵)
20	16, 17	op1std 8003	. . . . . . . 8 ⊢ (𝑧 = ⟨𝑢, 𝑣⟩ → (1^st ‘𝑧) = 𝑢)
21	20	csbeq1d 3896	. . . . . . 7 ⊢ (𝑧 = ⟨𝑢, 𝑣⟩ → ⦋(1^st ‘𝑧) / 𝑥⦌𝐵 = ⦋𝑢 / 𝑥⦌𝐵)
22	21	csbeq2dv 3899	. . . . . 6 ⊢ (𝑧 = ⟨𝑢, 𝑣⟩ → ⦋𝑣 / 𝑦⦌⦋(1^st ‘𝑧) / 𝑥⦌𝐵 = ⦋𝑣 / 𝑦⦌⦋𝑢 / 𝑥⦌𝐵)
23	19, 22	eqtrd 2768	. . . . 5 ⊢ (𝑧 = ⟨𝑢, 𝑣⟩ → ⦋(2^nd ‘𝑧) / 𝑦⦌⦋(1^st ‘𝑧) / 𝑥⦌𝐵 = ⦋𝑣 / 𝑦⦌⦋𝑢 / 𝑥⦌𝐵)
24	23	sumeq2sdv 15683	. . . 4 ⊢ (𝑧 = ⟨𝑢, 𝑣⟩ → Σ𝑘 ∈ 𝐴 ⦋(2^nd ‘𝑧) / 𝑦⦌⦋(1^st ‘𝑧) / 𝑥⦌𝐵 = Σ𝑘 ∈ 𝐴 ⦋𝑣 / 𝑦⦌⦋𝑢 / 𝑥⦌𝐵)
25	24	mpompt 7534	. . 3 ⊢ (𝑧 ∈ (𝑋 × 𝑌) ↦ Σ𝑘 ∈ 𝐴 ⦋(2^nd ‘𝑧) / 𝑦⦌⦋(1^st ‘𝑧) / 𝑥⦌𝐵) = (𝑢 ∈ 𝑋, 𝑣 ∈ 𝑌 ↦ Σ𝑘 ∈ 𝐴 ⦋𝑣 / 𝑦⦌⦋𝑢 / 𝑥⦌𝐵)
26	15, 25	eqtr4i 2759	. 2 ⊢ (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ Σ𝑘 ∈ 𝐴 𝐵) = (𝑧 ∈ (𝑋 × 𝑌) ↦ Σ𝑘 ∈ 𝐴 ⦋(2^nd ‘𝑧) / 𝑦⦌⦋(1^st ‘𝑧) / 𝑥⦌𝐵)
27		fsumcn.3	. . 3 ⊢ 𝐾 = (TopOpen‘ℂ_fld)
28		fsumcn.4	. . . 4 ⊢ (𝜑 → 𝐽 ∈ (TopOn‘𝑋))
29		fsum2cn.7	. . . 4 ⊢ (𝜑 → 𝐿 ∈ (TopOn‘𝑌))
30		txtopon 23508	. . . 4 ⊢ ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐿 ∈ (TopOn‘𝑌)) → (𝐽 ×_t 𝐿) ∈ (TopOn‘(𝑋 × 𝑌)))
31	28, 29, 30	syl2anc 583	. . 3 ⊢ (𝜑 → (𝐽 ×_t 𝐿) ∈ (TopOn‘(𝑋 × 𝑌)))
32		fsumcn.5	. . 3 ⊢ (𝜑 → 𝐴 ∈ Fin)
33		nfcv 2899	. . . . . 6 ⊢ Ⅎ𝑢𝐵
34		nfcv 2899	. . . . . 6 ⊢ Ⅎ𝑣𝐵
35	33, 34, 6, 9, 13	cbvmpo 7514	. . . . 5 ⊢ (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ 𝐵) = (𝑢 ∈ 𝑋, 𝑣 ∈ 𝑌 ↦ ⦋𝑣 / 𝑦⦌⦋𝑢 / 𝑥⦌𝐵)
36	23	mpompt 7534	. . . . 5 ⊢ (𝑧 ∈ (𝑋 × 𝑌) ↦ ⦋(2^nd ‘𝑧) / 𝑦⦌⦋(1^st ‘𝑧) / 𝑥⦌𝐵) = (𝑢 ∈ 𝑋, 𝑣 ∈ 𝑌 ↦ ⦋𝑣 / 𝑦⦌⦋𝑢 / 𝑥⦌𝐵)
37	35, 36	eqtr4i 2759	. . . 4 ⊢ (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ 𝐵) = (𝑧 ∈ (𝑋 × 𝑌) ↦ ⦋(2^nd ‘𝑧) / 𝑦⦌⦋(1^st ‘𝑧) / 𝑥⦌𝐵)
38		fsum2cn.8	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ 𝐵) ∈ ((𝐽 ×_t 𝐿) Cn 𝐾))
39	37, 38	eqeltrrid 2834	. . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → (𝑧 ∈ (𝑋 × 𝑌) ↦ ⦋(2^nd ‘𝑧) / 𝑦⦌⦋(1^st ‘𝑧) / 𝑥⦌𝐵) ∈ ((𝐽 ×_t 𝐿) Cn 𝐾))
40	27, 31, 32, 39	fsumcn 24801	. 2 ⊢ (𝜑 → (𝑧 ∈ (𝑋 × 𝑌) ↦ Σ𝑘 ∈ 𝐴 ⦋(2^nd ‘𝑧) / 𝑦⦌⦋(1^st ‘𝑧) / 𝑥⦌𝐵) ∈ ((𝐽 ×_t 𝐿) Cn 𝐾))
41	26, 40	eqeltrid 2833	1 ⊢ (𝜑 → (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑌 ↦ Σ𝑘 ∈ 𝐴 𝐵) ∈ ((𝐽 ×_t 𝐿) Cn 𝐾))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 395 = wceq 1534 ∈ wcel 2099 ⦋csb 3892 ⟨cop 4635 ↦ cmpt 5231 × cxp 5676 ‘cfv 6548 (class class class)co 7420 ∈ cmpo 7422 1^st c1st 7991 2^nd c2nd 7992 Fincfn 8964 Σcsu 15665 TopOpenctopn 17403 ℂ_fldccnfld 21279 TopOnctopon 22825 Cn ccn 23141 ×_t ctx 23477

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2101 ax-9 2109 ax-10 2130 ax-11 2147 ax-12 2167 ax-ext 2699 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5365 ax-pr 5429 ax-un 7740 ax-inf2 9665 ax-cnex 11195 ax-resscn 11196 ax-1cn 11197 ax-icn 11198 ax-addcl 11199 ax-addrcl 11200 ax-mulcl 11201 ax-mulrcl 11202 ax-mulcom 11203 ax-addass 11204 ax-mulass 11205 ax-distr 11206 ax-i2m1 11207 ax-1ne0 11208 ax-1rid 11209 ax-rnegex 11210 ax-rrecex 11211 ax-cnre 11212 ax-pre-lttri 11213 ax-pre-lttrn 11214 ax-pre-ltadd 11215 ax-pre-mulgt0 11216 ax-pre-sup 11217 ax-addf 11218

This theorem depends on definitions: df-bi 206 df-an 396 df-or 847 df-3or 1086 df-3an 1087 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2061 df-mo 2530 df-eu 2559 df-clab 2706 df-cleq 2720 df-clel 2806 df-nfc 2881 df-ne 2938 df-nel 3044 df-ral 3059 df-rex 3068 df-rmo 3373 df-reu 3374 df-rab 3430 df-v 3473 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-tp 4634 df-op 4636 df-uni 4909 df-int 4950 df-iun 4998 df-iin 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5576 df-eprel 5582 df-po 5590 df-so 5591 df-fr 5633 df-se 5634 df-we 5635 df-xp 5684 df-rel 5685 df-cnv 5686 df-co 5687 df-dm 5688 df-rn 5689 df-res 5690 df-ima 5691 df-pred 6305 df-ord 6372 df-on 6373 df-lim 6374 df-suc 6375 df-iota 6500 df-fun 6550 df-fn 6551 df-f 6552 df-f1 6553 df-fo 6554 df-f1o 6555 df-fv 6556 df-isom 6557 df-riota 7376 df-ov 7423 df-oprab 7424 df-mpo 7425 df-of 7685 df-om 7871 df-1st 7993 df-2nd 7994 df-supp 8166 df-frecs 8287 df-wrecs 8318 df-recs 8392 df-rdg 8431 df-1o 8487 df-2o 8488 df-er 8725 df-map 8847 df-ixp 8917 df-en 8965 df-dom 8966 df-sdom 8967 df-fin 8968 df-fsupp 9387 df-fi 9435 df-sup 9466 df-inf 9467 df-oi 9534 df-card 9963 df-pnf 11281 df-mnf 11282 df-xr 11283 df-ltxr 11284 df-le 11285 df-sub 11477 df-neg 11478 df-div 11903 df-nn 12244 df-2 12306 df-3 12307 df-4 12308 df-5 12309 df-6 12310 df-7 12311 df-8 12312 df-9 12313 df-n0 12504 df-z 12590 df-dec 12709 df-uz 12854 df-q 12964 df-rp 13008 df-xneg 13125 df-xadd 13126 df-xmul 13127 df-icc 13364 df-fz 13518 df-fzo 13661 df-seq 14000 df-exp 14060 df-hash 14323 df-cj 15079 df-re 15080 df-im 15081 df-sqrt 15215 df-abs 15216 df-clim 15465 df-sum 15666 df-struct 17116 df-sets 17133 df-slot 17151 df-ndx 17163 df-base 17181 df-ress 17210 df-plusg 17246 df-mulr 17247 df-starv 17248 df-sca 17249 df-vsca 17250 df-ip 17251 df-tset 17252 df-ple 17253 df-ds 17255 df-unif 17256 df-hom 17257 df-cco 17258 df-rest 17404 df-topn 17405 df-0g 17423 df-gsum 17424 df-topgen 17425 df-pt 17426 df-prds 17429 df-xrs 17484 df-qtop 17489 df-imas 17490 df-xps 17492 df-mre 17566 df-mrc 17567 df-acs 17569 df-mgm 18600 df-sgrp 18679 df-mnd 18695 df-submnd 18741 df-mulg 19024 df-cntz 19268 df-cmn 19737 df-psmet 21271 df-xmet 21272 df-met 21273 df-bl 21274 df-mopn 21275 df-cnfld 21280 df-top 22809 df-topon 22826 df-topsp 22848 df-bases 22862 df-cn 23144 df-cnp 23145 df-tx 23479 df-hmeo 23672 df-xms 24239 df-ms 24240 df-tms 24241

This theorem is referenced by: dipcn 30543

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