efgred2 - Metamath Proof Explorer

	Metamath Proof Explorer		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > efgred2		Structured version Visualization version GIF version

Theorem efgred2 19632

Description: Two extension sequences have related endpoints iff they have the same base. (Contributed by Mario Carneiro, 1-Oct-2015.)

**Hypotheses**
Ref	Expression
efgval.w	⊢ 𝑊 = ( I ‘Word (𝐼 × 2_o))
efgval.r	⊢ ∼ = ( ~_FG ‘𝐼)
efgval2.m	⊢ 𝑀 = (𝑦 ∈ 𝐼, 𝑧 ∈ 2_o ↦ ⟨𝑦, (1_o ∖ 𝑧)⟩)
efgval2.t	⊢ 𝑇 = (𝑣 ∈ 𝑊 ↦ (𝑛 ∈ (0...(♯‘𝑣)), 𝑤 ∈ (𝐼 × 2_o) ↦ (𝑣 splice ⟨𝑛, 𝑛, ⟨“𝑤(𝑀‘𝑤)”⟩⟩)))
efgred.d	⊢ 𝐷 = (𝑊 ∖ ∪ 𝑥 ∈ 𝑊 ran (𝑇‘𝑥))
efgred.s	⊢ 𝑆 = (𝑚 ∈ {𝑡 ∈ (Word 𝑊 ∖ {∅}) ∣ ((𝑡‘0) ∈ 𝐷 ∧ ∀𝑘 ∈ (1..^(♯‘𝑡))(𝑡‘𝑘) ∈ ran (𝑇‘(𝑡‘(𝑘 − 1))))} ↦ (𝑚‘((♯‘𝑚) − 1)))

**Assertion**
Ref	Expression
efgred2	⊢ ((𝐴 ∈ dom 𝑆 ∧ 𝐵 ∈ dom 𝑆) → ((𝑆‘𝐴) ∼ (𝑆‘𝐵) ↔ (𝐴‘0) = (𝐵‘0)))

Distinct variable groups: 𝑦,𝑧 𝑡,𝑛,𝑣,𝑤,𝑦,𝑧,𝑚,𝑥 𝑚,𝑀 𝑥,𝑛,𝑀,𝑡,𝑣,𝑤 𝑘,𝑚,𝑡,𝑥,𝑇 𝑘,𝑛,𝑣,𝑤,𝑦,𝑧,𝑊,𝑚,𝑡,𝑥 ∼ ,𝑚,𝑡,𝑥,𝑦,𝑧 𝑚,𝐼,𝑛,𝑡,𝑣,𝑤,𝑥,𝑦,𝑧 𝐷,𝑚,𝑡 Allowed substitution hints: 𝐴(𝑥,𝑦,𝑧,𝑤,𝑣,𝑡,𝑘,𝑚,𝑛) 𝐵(𝑥,𝑦,𝑧,𝑤,𝑣,𝑡,𝑘,𝑚,𝑛) 𝐷(𝑥,𝑦,𝑧,𝑤,𝑣,𝑘,𝑛) ∼ (𝑤,𝑣,𝑘,𝑛) 𝑆(𝑥,𝑦,𝑧,𝑤,𝑣,𝑡,𝑘,𝑚,𝑛) 𝑇(𝑦,𝑧,𝑤,𝑣,𝑛) 𝐼(𝑘) 𝑀(𝑦,𝑧,𝑘)

Proof of Theorem efgred2 Dummy variables 𝑑 𝑖 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		efgval.w	. . . . . . . 8 ⊢ 𝑊 = ( I ‘Word (𝐼 × 2_o))
2		efgval.r	. . . . . . . 8 ⊢ ∼ = ( ~_FG ‘𝐼)
3		efgval2.m	. . . . . . . 8 ⊢ 𝑀 = (𝑦 ∈ 𝐼, 𝑧 ∈ 2_o ↦ ⟨𝑦, (1_o ∖ 𝑧)⟩)
4		efgval2.t	. . . . . . . 8 ⊢ 𝑇 = (𝑣 ∈ 𝑊 ↦ (𝑛 ∈ (0...(♯‘𝑣)), 𝑤 ∈ (𝐼 × 2_o) ↦ (𝑣 splice ⟨𝑛, 𝑛, ⟨“𝑤(𝑀‘𝑤)”⟩⟩)))
5		efgred.d	. . . . . . . 8 ⊢ 𝐷 = (𝑊 ∖ ∪ 𝑥 ∈ 𝑊 ran (𝑇‘𝑥))
6		efgred.s	. . . . . . . 8 ⊢ 𝑆 = (𝑚 ∈ {𝑡 ∈ (Word 𝑊 ∖ {∅}) ∣ ((𝑡‘0) ∈ 𝐷 ∧ ∀𝑘 ∈ (1..^(♯‘𝑡))(𝑡‘𝑘) ∈ ran (𝑇‘(𝑡‘(𝑘 − 1))))} ↦ (𝑚‘((♯‘𝑚) − 1)))
7	1, 2, 3, 4, 5, 6	efgsfo 19618	. . . . . . 7 ⊢ 𝑆:dom 𝑆–onto→𝑊
8		fof 6736	. . . . . . 7 ⊢ (𝑆:dom 𝑆–onto→𝑊 → 𝑆:dom 𝑆⟶𝑊)
9	7, 8	ax-mp 5	. . . . . 6 ⊢ 𝑆:dom 𝑆⟶𝑊
10	9	ffvelcdmi 7017	. . . . 5 ⊢ (𝐵 ∈ dom 𝑆 → (𝑆‘𝐵) ∈ 𝑊)
11	10	ad2antlr 727	. . . 4 ⊢ (((𝐴 ∈ dom 𝑆 ∧ 𝐵 ∈ dom 𝑆) ∧ (𝑆‘𝐴) ∼ (𝑆‘𝐵)) → (𝑆‘𝐵) ∈ 𝑊)
12	1, 2, 3, 4, 5, 6	efgredeu 19631	. . . 4 ⊢ ((𝑆‘𝐵) ∈ 𝑊 → ∃!𝑑 ∈ 𝐷 𝑑 ∼ (𝑆‘𝐵))
13		reurmo 3346	. . . 4 ⊢ (∃!𝑑 ∈ 𝐷 𝑑 ∼ (𝑆‘𝐵) → ∃*𝑑 ∈ 𝐷 𝑑 ∼ (𝑆‘𝐵))
14	11, 12, 13	3syl 18	. . 3 ⊢ (((𝐴 ∈ dom 𝑆 ∧ 𝐵 ∈ dom 𝑆) ∧ (𝑆‘𝐴) ∼ (𝑆‘𝐵)) → ∃*𝑑 ∈ 𝐷 𝑑 ∼ (𝑆‘𝐵))
15	1, 2, 3, 4, 5, 6	efgsdm 19609	. . . . 5 ⊢ (𝐴 ∈ dom 𝑆 ↔ (𝐴 ∈ (Word 𝑊 ∖ {∅}) ∧ (𝐴‘0) ∈ 𝐷 ∧ ∀𝑖 ∈ (1..^(♯‘𝐴))(𝐴‘𝑖) ∈ ran (𝑇‘(𝐴‘(𝑖 − 1)))))
16	15	simp2bi 1146	. . . 4 ⊢ (𝐴 ∈ dom 𝑆 → (𝐴‘0) ∈ 𝐷)
17	16	ad2antrr 726	. . 3 ⊢ (((𝐴 ∈ dom 𝑆 ∧ 𝐵 ∈ dom 𝑆) ∧ (𝑆‘𝐴) ∼ (𝑆‘𝐵)) → (𝐴‘0) ∈ 𝐷)
18	1, 2	efger 19597	. . . . 5 ⊢ ∼ Er 𝑊
19	18	a1i 11	. . . 4 ⊢ (((𝐴 ∈ dom 𝑆 ∧ 𝐵 ∈ dom 𝑆) ∧ (𝑆‘𝐴) ∼ (𝑆‘𝐵)) → ∼ Er 𝑊)
20	1, 2, 3, 4, 5, 6	efgsrel 19613	. . . . 5 ⊢ (𝐴 ∈ dom 𝑆 → (𝐴‘0) ∼ (𝑆‘𝐴))
21	20	ad2antrr 726	. . . 4 ⊢ (((𝐴 ∈ dom 𝑆 ∧ 𝐵 ∈ dom 𝑆) ∧ (𝑆‘𝐴) ∼ (𝑆‘𝐵)) → (𝐴‘0) ∼ (𝑆‘𝐴))
22		simpr 484	. . . 4 ⊢ (((𝐴 ∈ dom 𝑆 ∧ 𝐵 ∈ dom 𝑆) ∧ (𝑆‘𝐴) ∼ (𝑆‘𝐵)) → (𝑆‘𝐴) ∼ (𝑆‘𝐵))
23	19, 21, 22	ertrd 8641	. . 3 ⊢ (((𝐴 ∈ dom 𝑆 ∧ 𝐵 ∈ dom 𝑆) ∧ (𝑆‘𝐴) ∼ (𝑆‘𝐵)) → (𝐴‘0) ∼ (𝑆‘𝐵))
24	1, 2, 3, 4, 5, 6	efgsdm 19609	. . . . 5 ⊢ (𝐵 ∈ dom 𝑆 ↔ (𝐵 ∈ (Word 𝑊 ∖ {∅}) ∧ (𝐵‘0) ∈ 𝐷 ∧ ∀𝑖 ∈ (1..^(♯‘𝐵))(𝐵‘𝑖) ∈ ran (𝑇‘(𝐵‘(𝑖 − 1)))))
25	24	simp2bi 1146	. . . 4 ⊢ (𝐵 ∈ dom 𝑆 → (𝐵‘0) ∈ 𝐷)
26	25	ad2antlr 727	. . 3 ⊢ (((𝐴 ∈ dom 𝑆 ∧ 𝐵 ∈ dom 𝑆) ∧ (𝑆‘𝐴) ∼ (𝑆‘𝐵)) → (𝐵‘0) ∈ 𝐷)
27	1, 2, 3, 4, 5, 6	efgsrel 19613	. . . 4 ⊢ (𝐵 ∈ dom 𝑆 → (𝐵‘0) ∼ (𝑆‘𝐵))
28	27	ad2antlr 727	. . 3 ⊢ (((𝐴 ∈ dom 𝑆 ∧ 𝐵 ∈ dom 𝑆) ∧ (𝑆‘𝐴) ∼ (𝑆‘𝐵)) → (𝐵‘0) ∼ (𝑆‘𝐵))
29		breq1 5095	. . . 4 ⊢ (𝑑 = (𝐴‘0) → (𝑑 ∼ (𝑆‘𝐵) ↔ (𝐴‘0) ∼ (𝑆‘𝐵)))
30		breq1 5095	. . . 4 ⊢ (𝑑 = (𝐵‘0) → (𝑑 ∼ (𝑆‘𝐵) ↔ (𝐵‘0) ∼ (𝑆‘𝐵)))
31	29, 30	rmoi 3843	. . 3 ⊢ ((∃*𝑑 ∈ 𝐷 𝑑 ∼ (𝑆‘𝐵) ∧ ((𝐴‘0) ∈ 𝐷 ∧ (𝐴‘0) ∼ (𝑆‘𝐵)) ∧ ((𝐵‘0) ∈ 𝐷 ∧ (𝐵‘0) ∼ (𝑆‘𝐵))) → (𝐴‘0) = (𝐵‘0))
32	14, 17, 23, 26, 28, 31	syl122anc 1381	. 2 ⊢ (((𝐴 ∈ dom 𝑆 ∧ 𝐵 ∈ dom 𝑆) ∧ (𝑆‘𝐴) ∼ (𝑆‘𝐵)) → (𝐴‘0) = (𝐵‘0))
33	18	a1i 11	. . 3 ⊢ (((𝐴 ∈ dom 𝑆 ∧ 𝐵 ∈ dom 𝑆) ∧ (𝐴‘0) = (𝐵‘0)) → ∼ Er 𝑊)
34	20	ad2antrr 726	. . 3 ⊢ (((𝐴 ∈ dom 𝑆 ∧ 𝐵 ∈ dom 𝑆) ∧ (𝐴‘0) = (𝐵‘0)) → (𝐴‘0) ∼ (𝑆‘𝐴))
35		simpr 484	. . . 4 ⊢ (((𝐴 ∈ dom 𝑆 ∧ 𝐵 ∈ dom 𝑆) ∧ (𝐴‘0) = (𝐵‘0)) → (𝐴‘0) = (𝐵‘0))
36	27	ad2antlr 727	. . . 4 ⊢ (((𝐴 ∈ dom 𝑆 ∧ 𝐵 ∈ dom 𝑆) ∧ (𝐴‘0) = (𝐵‘0)) → (𝐵‘0) ∼ (𝑆‘𝐵))
37	35, 36	eqbrtrd 5114	. . 3 ⊢ (((𝐴 ∈ dom 𝑆 ∧ 𝐵 ∈ dom 𝑆) ∧ (𝐴‘0) = (𝐵‘0)) → (𝐴‘0) ∼ (𝑆‘𝐵))
38	33, 34, 37	ertr3d 8643	. 2 ⊢ (((𝐴 ∈ dom 𝑆 ∧ 𝐵 ∈ dom 𝑆) ∧ (𝐴‘0) = (𝐵‘0)) → (𝑆‘𝐴) ∼ (𝑆‘𝐵))
39	32, 38	impbida 800	1 ⊢ ((𝐴 ∈ dom 𝑆 ∧ 𝐵 ∈ dom 𝑆) → ((𝑆‘𝐴) ∼ (𝑆‘𝐵) ↔ (𝐴‘0) = (𝐵‘0)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1540 ∈ wcel 2109 ∀wral 3044 ∃!wreu 3341 ∃*wrmo 3342 {crab 3394 ∖ cdif 3900 ∅c0 4284 {csn 4577 ⟨cop 4583 ⟨cotp 4585 ∪ ciun 4941 class class class wbr 5092 ↦ cmpt 5173 I cid 5513 × cxp 5617 dom cdm 5619 ran crn 5620 ⟶wf 6478 –onto→wfo 6480 ‘cfv 6482 (class class class)co 7349 ∈ cmpo 7351 1_oc1o 8381 2_oc2o 8382 Er wer 8622 0cc0 11009 1c1 11010 − cmin 11347 ...cfz 13410 ..^cfzo 13557 ♯chash 14237 Word cword 14420 splice csplice 14655 ⟨“cs2 14748 ~_FG cefg 19585

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-rep 5218 ax-sep 5235 ax-nul 5245 ax-pow 5304 ax-pr 5371 ax-un 7671 ax-cnex 11065 ax-resscn 11066 ax-1cn 11067 ax-icn 11068 ax-addcl 11069 ax-addrcl 11070 ax-mulcl 11071 ax-mulrcl 11072 ax-mulcom 11073 ax-addass 11074 ax-mulass 11075 ax-distr 11076 ax-i2m1 11077 ax-1ne0 11078 ax-1rid 11079 ax-rnegex 11080 ax-rrecex 11081 ax-cnre 11082 ax-pre-lttri 11083 ax-pre-lttrn 11084 ax-pre-ltadd 11085 ax-pre-mulgt0 11086

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-rmo 3343 df-reu 3344 df-rab 3395 df-v 3438 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4285 df-if 4477 df-pw 4553 df-sn 4578 df-pr 4580 df-op 4584 df-ot 4586 df-uni 4859 df-int 4897 df-iun 4943 df-iin 4944 df-br 5093 df-opab 5155 df-mpt 5174 df-tr 5200 df-id 5514 df-eprel 5519 df-po 5527 df-so 5528 df-fr 5572 df-we 5574 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-pred 6249 df-ord 6310 df-on 6311 df-lim 6312 df-suc 6313 df-iota 6438 df-fun 6484 df-fn 6485 df-f 6486 df-f1 6487 df-fo 6488 df-f1o 6489 df-fv 6490 df-riota 7306 df-ov 7352 df-oprab 7353 df-mpo 7354 df-om 7800 df-1st 7924 df-2nd 7925 df-frecs 8214 df-wrecs 8245 df-recs 8294 df-rdg 8332 df-1o 8388 df-2o 8389 df-er 8625 df-ec 8627 df-map 8755 df-en 8873 df-dom 8874 df-sdom 8875 df-fin 8876 df-card 9835 df-pnf 11151 df-mnf 11152 df-xr 11153 df-ltxr 11154 df-le 11155 df-sub 11349 df-neg 11350 df-nn 12129 df-2 12191 df-n0 12385 df-xnn0 12458 df-z 12472 df-uz 12736 df-rp 12894 df-fz 13411 df-fzo 13558 df-hash 14238 df-word 14421 df-concat 14478 df-s1 14503 df-substr 14548 df-pfx 14578 df-splice 14656 df-s2 14755 df-efg 19588

This theorem is referenced by: (None)

W3C validator