elpi1i - Metamath Proof Explorer

	Metamath Proof Explorer		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > elpi1i		Structured version Visualization version GIF version

Theorem elpi1i 25000

Description: The elements of the fundamental group. (Contributed by Jeff Madsen, 19-Jun-2010.) (Revised by Mario Carneiro, 10-Jul-2015.)

**Hypotheses**
Ref	Expression
elpi1.g	⊢ 𝐺 = (𝐽 π₁ 𝑌)
elpi1.b	⊢ 𝐵 = (Base‘𝐺)
elpi1.1	⊢ (𝜑 → 𝐽 ∈ (TopOn‘𝑋))
elpi1.2	⊢ (𝜑 → 𝑌 ∈ 𝑋)
elpi1i.3	⊢ (𝜑 → 𝐹 ∈ (II Cn 𝐽))
elpi1i.4	⊢ (𝜑 → (𝐹‘0) = 𝑌)
elpi1i.5	⊢ (𝜑 → (𝐹‘1) = 𝑌)

**Assertion**
Ref	Expression
elpi1i	⊢ (𝜑 → [𝐹]( ≃_ph‘𝐽) ∈ 𝐵)

Proof of Theorem elpi1i Dummy variable 𝑓 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		elpi1i.3	. . 3 ⊢ (𝜑 → 𝐹 ∈ (II Cn 𝐽))
2		elpi1i.4	. . 3 ⊢ (𝜑 → (𝐹‘0) = 𝑌)
3		elpi1i.5	. . 3 ⊢ (𝜑 → (𝐹‘1) = 𝑌)
4		eceq1 8672	. . . . . . 7 ⊢ (𝑓 = 𝐹 → [𝑓]( ≃_ph‘𝐽) = [𝐹]( ≃_ph‘𝐽))
5	4	eqcomd 2740	. . . . . 6 ⊢ (𝑓 = 𝐹 → [𝐹]( ≃_ph‘𝐽) = [𝑓]( ≃_ph‘𝐽))
6	5	biantrud 531	. . . . 5 ⊢ (𝑓 = 𝐹 → (((𝑓‘0) = 𝑌 ∧ (𝑓‘1) = 𝑌) ↔ (((𝑓‘0) = 𝑌 ∧ (𝑓‘1) = 𝑌) ∧ [𝐹]( ≃_ph‘𝐽) = [𝑓]( ≃_ph‘𝐽))))
7		fveq1 6831	. . . . . . 7 ⊢ (𝑓 = 𝐹 → (𝑓‘0) = (𝐹‘0))
8	7	eqeq1d 2736	. . . . . 6 ⊢ (𝑓 = 𝐹 → ((𝑓‘0) = 𝑌 ↔ (𝐹‘0) = 𝑌))
9		fveq1 6831	. . . . . . 7 ⊢ (𝑓 = 𝐹 → (𝑓‘1) = (𝐹‘1))
10	9	eqeq1d 2736	. . . . . 6 ⊢ (𝑓 = 𝐹 → ((𝑓‘1) = 𝑌 ↔ (𝐹‘1) = 𝑌))
11	8, 10	anbi12d 632	. . . . 5 ⊢ (𝑓 = 𝐹 → (((𝑓‘0) = 𝑌 ∧ (𝑓‘1) = 𝑌) ↔ ((𝐹‘0) = 𝑌 ∧ (𝐹‘1) = 𝑌)))
12	6, 11	bitr3d 281	. . . 4 ⊢ (𝑓 = 𝐹 → ((((𝑓‘0) = 𝑌 ∧ (𝑓‘1) = 𝑌) ∧ [𝐹]( ≃_ph‘𝐽) = [𝑓]( ≃_ph‘𝐽)) ↔ ((𝐹‘0) = 𝑌 ∧ (𝐹‘1) = 𝑌)))
13	12	rspcev 3574	. . 3 ⊢ ((𝐹 ∈ (II Cn 𝐽) ∧ ((𝐹‘0) = 𝑌 ∧ (𝐹‘1) = 𝑌)) → ∃𝑓 ∈ (II Cn 𝐽)(((𝑓‘0) = 𝑌 ∧ (𝑓‘1) = 𝑌) ∧ [𝐹]( ≃_ph‘𝐽) = [𝑓]( ≃_ph‘𝐽)))
14	1, 2, 3, 13	syl12anc 836	. 2 ⊢ (𝜑 → ∃𝑓 ∈ (II Cn 𝐽)(((𝑓‘0) = 𝑌 ∧ (𝑓‘1) = 𝑌) ∧ [𝐹]( ≃_ph‘𝐽) = [𝑓]( ≃_ph‘𝐽)))
15		elpi1.g	. . 3 ⊢ 𝐺 = (𝐽 π₁ 𝑌)
16		elpi1.b	. . 3 ⊢ 𝐵 = (Base‘𝐺)
17		elpi1.1	. . 3 ⊢ (𝜑 → 𝐽 ∈ (TopOn‘𝑋))
18		elpi1.2	. . 3 ⊢ (𝜑 → 𝑌 ∈ 𝑋)
19	15, 16, 17, 18	elpi1 24999	. 2 ⊢ (𝜑 → ([𝐹]( ≃_ph‘𝐽) ∈ 𝐵 ↔ ∃𝑓 ∈ (II Cn 𝐽)(((𝑓‘0) = 𝑌 ∧ (𝑓‘1) = 𝑌) ∧ [𝐹]( ≃_ph‘𝐽) = [𝑓]( ≃_ph‘𝐽))))
20	14, 19	mpbird 257	1 ⊢ (𝜑 → [𝐹]( ≃_ph‘𝐽) ∈ 𝐵)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 395 = wceq 1541 ∈ wcel 2113 ∃wrex 3058 ‘cfv 6490 (class class class)co 7356 [cec 8631 0cc0 11024 1c1 11025 Basecbs 17134 TopOnctopon 22852 Cn ccn 23166 IIcii 24822 ≃_phcphtpc 24922 π₁ cpi1 24957

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 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2706 ax-rep 5222 ax-sep 5239 ax-nul 5249 ax-pow 5308 ax-pr 5375 ax-un 7678 ax-cnex 11080 ax-resscn 11081 ax-1cn 11082 ax-icn 11083 ax-addcl 11084 ax-addrcl 11085 ax-mulcl 11086 ax-mulrcl 11087 ax-mulcom 11088 ax-addass 11089 ax-mulass 11090 ax-distr 11091 ax-i2m1 11092 ax-1ne0 11093 ax-1rid 11094 ax-rnegex 11095 ax-rrecex 11096 ax-cnre 11097 ax-pre-lttri 11098 ax-pre-lttrn 11099 ax-pre-ltadd 11100 ax-pre-mulgt0 11101 ax-pre-sup 11102

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 2537 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2809 df-nfc 2883 df-ne 2931 df-nel 3035 df-ral 3050 df-rex 3059 df-rmo 3348 df-reu 3349 df-rab 3398 df-v 3440 df-sbc 3739 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4579 df-pr 4581 df-tp 4583 df-op 4585 df-uni 4862 df-int 4901 df-iun 4946 df-iin 4947 df-br 5097 df-opab 5159 df-mpt 5178 df-tr 5204 df-id 5517 df-eprel 5522 df-po 5530 df-so 5531 df-fr 5575 df-se 5576 df-we 5577 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-pred 6257 df-ord 6318 df-on 6319 df-lim 6320 df-suc 6321 df-iota 6446 df-fun 6492 df-fn 6493 df-f 6494 df-f1 6495 df-fo 6496 df-f1o 6497 df-fv 6498 df-isom 6499 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-of 7620 df-om 7807 df-1st 7931 df-2nd 7932 df-supp 8101 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-1o 8395 df-2o 8396 df-er 8633 df-ec 8635 df-qs 8639 df-map 8763 df-ixp 8834 df-en 8882 df-dom 8883 df-sdom 8884 df-fin 8885 df-fsupp 9263 df-fi 9312 df-sup 9343 df-inf 9344 df-oi 9413 df-card 9849 df-pnf 11166 df-mnf 11167 df-xr 11168 df-ltxr 11169 df-le 11170 df-sub 11364 df-neg 11365 df-div 11793 df-nn 12144 df-2 12206 df-3 12207 df-4 12208 df-5 12209 df-6 12210 df-7 12211 df-8 12212 df-9 12213 df-n0 12400 df-z 12487 df-dec 12606 df-uz 12750 df-q 12860 df-rp 12904 df-xneg 13024 df-xadd 13025 df-xmul 13026 df-ioo 13263 df-icc 13266 df-fz 13422 df-fzo 13569 df-seq 13923 df-exp 13983 df-hash 14252 df-cj 15020 df-re 15021 df-im 15022 df-sqrt 15156 df-abs 15157 df-struct 17072 df-sets 17089 df-slot 17107 df-ndx 17119 df-base 17135 df-ress 17156 df-plusg 17188 df-mulr 17189 df-starv 17190 df-sca 17191 df-vsca 17192 df-ip 17193 df-tset 17194 df-ple 17195 df-ds 17197 df-unif 17198 df-hom 17199 df-cco 17200 df-rest 17340 df-topn 17341 df-0g 17359 df-gsum 17360 df-topgen 17361 df-pt 17362 df-prds 17365 df-xrs 17421 df-qtop 17426 df-imas 17427 df-qus 17428 df-xps 17429 df-mre 17503 df-mrc 17504 df-acs 17506 df-mgm 18563 df-sgrp 18642 df-mnd 18658 df-submnd 18707 df-mulg 18996 df-cntz 19244 df-cmn 19709 df-psmet 21299 df-xmet 21300 df-met 21301 df-bl 21302 df-mopn 21303 df-cnfld 21308 df-top 22836 df-topon 22853 df-topsp 22875 df-bases 22888 df-cld 22961 df-cn 23169 df-cnp 23170 df-tx 23504 df-hmeo 23697 df-xms 24262 df-ms 24263 df-tms 24264 df-ii 24824 df-htpy 24923 df-phtpy 24924 df-phtpc 24945 df-om1 24960 df-pi1 24962

This theorem is referenced by: pi1inv 25006 pi1xfrf 25007 pi1cof 25013 sconnpi1 35382

W3C validator