mrsubcn - Mathbox for Mario Carneiro

	Mathbox for Mario Carneiro		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > Mathboxes > mrsubcn		Structured version Visualization version GIF version

Theorem mrsubcn 35563

Description: A substitution does not change the value of constant substrings. (Contributed by Mario Carneiro, 18-Jul-2016.)

**Hypotheses**
Ref	Expression
mrsubccat.s	⊢ 𝑆 = (mRSubst‘𝑇)
mrsubccat.r	⊢ 𝑅 = (mREx‘𝑇)
mrsubcn.v	⊢ 𝑉 = (mVR‘𝑇)
mrsubcn.c	⊢ 𝐶 = (mCN‘𝑇)

**Assertion**
Ref	Expression
mrsubcn	⊢ ((𝐹 ∈ ran 𝑆 ∧ 𝑋 ∈ (𝐶 ∖ 𝑉)) → (𝐹‘⟨“𝑋”⟩) = ⟨“𝑋”⟩)

Proof of Theorem mrsubcn Dummy variable 𝑓 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		n0i 4287	. . . . 5 ⊢ (𝐹 ∈ ran 𝑆 → ¬ ran 𝑆 = ∅)
2		mrsubccat.s	. . . . . 6 ⊢ 𝑆 = (mRSubst‘𝑇)
3	2	rnfvprc 6816	. . . . 5 ⊢ (¬ 𝑇 ∈ V → ran 𝑆 = ∅)
4	1, 3	nsyl2 141	. . . 4 ⊢ (𝐹 ∈ ran 𝑆 → 𝑇 ∈ V)
5		mrsubcn.v	. . . . 5 ⊢ 𝑉 = (mVR‘𝑇)
6		mrsubccat.r	. . . . 5 ⊢ 𝑅 = (mREx‘𝑇)
7	5, 6, 2	mrsubff 35556	. . . 4 ⊢ (𝑇 ∈ V → 𝑆:(𝑅 ↑_pm 𝑉)⟶(𝑅 ↑_m 𝑅))
8		ffun 6654	. . . 4 ⊢ (𝑆:(𝑅 ↑_pm 𝑉)⟶(𝑅 ↑_m 𝑅) → Fun 𝑆)
9	4, 7, 8	3syl 18	. . 3 ⊢ (𝐹 ∈ ran 𝑆 → Fun 𝑆)
10	5, 6, 2	mrsubrn 35557	. . . . 5 ⊢ ran 𝑆 = (𝑆 “ (𝑅 ↑_m 𝑉))
11	10	eleq2i 2823	. . . 4 ⊢ (𝐹 ∈ ran 𝑆 ↔ 𝐹 ∈ (𝑆 “ (𝑅 ↑_m 𝑉)))
12	11	biimpi 216	. . 3 ⊢ (𝐹 ∈ ran 𝑆 → 𝐹 ∈ (𝑆 “ (𝑅 ↑_m 𝑉)))
13		fvelima 6887	. . 3 ⊢ ((Fun 𝑆 ∧ 𝐹 ∈ (𝑆 “ (𝑅 ↑_m 𝑉))) → ∃𝑓 ∈ (𝑅 ↑_m 𝑉)(𝑆‘𝑓) = 𝐹)
14	9, 12, 13	syl2anc 584	. 2 ⊢ (𝐹 ∈ ran 𝑆 → ∃𝑓 ∈ (𝑅 ↑_m 𝑉)(𝑆‘𝑓) = 𝐹)
15		elmapi 8773	. . . . . . 7 ⊢ (𝑓 ∈ (𝑅 ↑_m 𝑉) → 𝑓:𝑉⟶𝑅)
16	15	adantl 481	. . . . . 6 ⊢ ((𝑋 ∈ (𝐶 ∖ 𝑉) ∧ 𝑓 ∈ (𝑅 ↑_m 𝑉)) → 𝑓:𝑉⟶𝑅)
17		ssidd 3953	. . . . . 6 ⊢ ((𝑋 ∈ (𝐶 ∖ 𝑉) ∧ 𝑓 ∈ (𝑅 ↑_m 𝑉)) → 𝑉 ⊆ 𝑉)
18		eldifi 4078	. . . . . . . 8 ⊢ (𝑋 ∈ (𝐶 ∖ 𝑉) → 𝑋 ∈ 𝐶)
19		elun1 4129	. . . . . . . 8 ⊢ (𝑋 ∈ 𝐶 → 𝑋 ∈ (𝐶 ∪ 𝑉))
20	18, 19	syl 17	. . . . . . 7 ⊢ (𝑋 ∈ (𝐶 ∖ 𝑉) → 𝑋 ∈ (𝐶 ∪ 𝑉))
21	20	adantr 480	. . . . . 6 ⊢ ((𝑋 ∈ (𝐶 ∖ 𝑉) ∧ 𝑓 ∈ (𝑅 ↑_m 𝑉)) → 𝑋 ∈ (𝐶 ∪ 𝑉))
22		mrsubcn.c	. . . . . . 7 ⊢ 𝐶 = (mCN‘𝑇)
23	22, 5, 6, 2	mrsubcv 35554	. . . . . 6 ⊢ ((𝑓:𝑉⟶𝑅 ∧ 𝑉 ⊆ 𝑉 ∧ 𝑋 ∈ (𝐶 ∪ 𝑉)) → ((𝑆‘𝑓)‘⟨“𝑋”⟩) = if(𝑋 ∈ 𝑉, (𝑓‘𝑋), ⟨“𝑋”⟩))
24	16, 17, 21, 23	syl3anc 1373	. . . . 5 ⊢ ((𝑋 ∈ (𝐶 ∖ 𝑉) ∧ 𝑓 ∈ (𝑅 ↑_m 𝑉)) → ((𝑆‘𝑓)‘⟨“𝑋”⟩) = if(𝑋 ∈ 𝑉, (𝑓‘𝑋), ⟨“𝑋”⟩))
25		eldifn 4079	. . . . . . 7 ⊢ (𝑋 ∈ (𝐶 ∖ 𝑉) → ¬ 𝑋 ∈ 𝑉)
26	25	adantr 480	. . . . . 6 ⊢ ((𝑋 ∈ (𝐶 ∖ 𝑉) ∧ 𝑓 ∈ (𝑅 ↑_m 𝑉)) → ¬ 𝑋 ∈ 𝑉)
27	26	iffalsed 4483	. . . . 5 ⊢ ((𝑋 ∈ (𝐶 ∖ 𝑉) ∧ 𝑓 ∈ (𝑅 ↑_m 𝑉)) → if(𝑋 ∈ 𝑉, (𝑓‘𝑋), ⟨“𝑋”⟩) = ⟨“𝑋”⟩)
28	24, 27	eqtrd 2766	. . . 4 ⊢ ((𝑋 ∈ (𝐶 ∖ 𝑉) ∧ 𝑓 ∈ (𝑅 ↑_m 𝑉)) → ((𝑆‘𝑓)‘⟨“𝑋”⟩) = ⟨“𝑋”⟩)
29		fveq1 6821	. . . . 5 ⊢ ((𝑆‘𝑓) = 𝐹 → ((𝑆‘𝑓)‘⟨“𝑋”⟩) = (𝐹‘⟨“𝑋”⟩))
30	29	eqeq1d 2733	. . . 4 ⊢ ((𝑆‘𝑓) = 𝐹 → (((𝑆‘𝑓)‘⟨“𝑋”⟩) = ⟨“𝑋”⟩ ↔ (𝐹‘⟨“𝑋”⟩) = ⟨“𝑋”⟩))
31	28, 30	syl5ibcom 245	. . 3 ⊢ ((𝑋 ∈ (𝐶 ∖ 𝑉) ∧ 𝑓 ∈ (𝑅 ↑_m 𝑉)) → ((𝑆‘𝑓) = 𝐹 → (𝐹‘⟨“𝑋”⟩) = ⟨“𝑋”⟩))
32	31	rexlimdva 3133	. 2 ⊢ (𝑋 ∈ (𝐶 ∖ 𝑉) → (∃𝑓 ∈ (𝑅 ↑_m 𝑉)(𝑆‘𝑓) = 𝐹 → (𝐹‘⟨“𝑋”⟩) = ⟨“𝑋”⟩))
33	14, 32	mpan9 506	1 ⊢ ((𝐹 ∈ ran 𝑆 ∧ 𝑋 ∈ (𝐶 ∖ 𝑉)) → (𝐹‘⟨“𝑋”⟩) = ⟨“𝑋”⟩)

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 = wceq 1541 ∈ wcel 2111 ∃wrex 3056 Vcvv 3436 ∖ cdif 3894 ∪ cun 3895 ⊆ wss 3897 ∅c0 4280 ifcif 4472 ran crn 5615 “ cima 5617 Fun wfun 6475 ⟶wf 6477 ‘cfv 6481 (class class class)co 7346 ↑_m cmap 8750 ↑_pm cpm 8751 ⟨“cs1 14503 mCNcmcn 35504 mVRcmvar 35505 mRExcmrex 35510 mRSubstcmrsub 35514

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-rep 5215 ax-sep 5232 ax-nul 5242 ax-pow 5301 ax-pr 5368 ax-un 7668 ax-cnex 11062 ax-resscn 11063 ax-1cn 11064 ax-icn 11065 ax-addcl 11066 ax-addrcl 11067 ax-mulcl 11068 ax-mulrcl 11069 ax-mulcom 11070 ax-addass 11071 ax-mulass 11072 ax-distr 11073 ax-i2m1 11074 ax-1ne0 11075 ax-1rid 11076 ax-rnegex 11077 ax-rrecex 11078 ax-cnre 11079 ax-pre-lttri 11080 ax-pre-lttrn 11081 ax-pre-ltadd 11082 ax-pre-mulgt0 11083

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-nel 3033 df-ral 3048 df-rex 3057 df-rmo 3346 df-reu 3347 df-rab 3396 df-v 3438 df-sbc 3737 df-csb 3846 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-pss 3917 df-nul 4281 df-if 4473 df-pw 4549 df-sn 4574 df-pr 4576 df-op 4580 df-uni 4857 df-int 4896 df-iun 4941 df-br 5090 df-opab 5152 df-mpt 5171 df-tr 5197 df-id 5509 df-eprel 5514 df-po 5522 df-so 5523 df-fr 5567 df-we 5569 df-xp 5620 df-rel 5621 df-cnv 5622 df-co 5623 df-dm 5624 df-rn 5625 df-res 5626 df-ima 5627 df-pred 6248 df-ord 6309 df-on 6310 df-lim 6311 df-suc 6312 df-iota 6437 df-fun 6483 df-fn 6484 df-f 6485 df-f1 6486 df-fo 6487 df-f1o 6488 df-fv 6489 df-riota 7303 df-ov 7349 df-oprab 7350 df-mpo 7351 df-om 7797 df-1st 7921 df-2nd 7922 df-frecs 8211 df-wrecs 8242 df-recs 8291 df-rdg 8329 df-1o 8385 df-er 8622 df-map 8752 df-pm 8753 df-en 8870 df-dom 8871 df-sdom 8872 df-fin 8873 df-card 9832 df-pnf 11148 df-mnf 11149 df-xr 11150 df-ltxr 11151 df-le 11152 df-sub 11346 df-neg 11347 df-nn 12126 df-2 12188 df-n0 12382 df-z 12469 df-uz 12733 df-fz 13408 df-fzo 13555 df-seq 13909 df-hash 14238 df-word 14421 df-concat 14478 df-s1 14504 df-struct 17058 df-sets 17075 df-slot 17093 df-ndx 17105 df-base 17121 df-ress 17142 df-plusg 17174 df-0g 17345 df-gsum 17346 df-mgm 18548 df-sgrp 18627 df-mnd 18643 df-submnd 18692 df-frmd 18757 df-mrex 35530 df-mrsub 35534

This theorem is referenced by: elmrsubrn 35564 mrsubco 35565 mrsubvrs 35566

W3C validator