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| Mirrors > Home > MPE Home > Th. List > elpi1 | Structured version Visualization version GIF version | ||
| Description: The elements of the fundamental group. (Contributed by Jeff Madsen, 19-Jun-2010.) (Revised by Mario Carneiro, 10-Jul-2015.) |
| Ref | Expression |
|---|---|
| elpi1.g | ⊢ 𝐺 = (𝐽 π1 𝑌) |
| elpi1.b | ⊢ 𝐵 = (Base‘𝐺) |
| elpi1.1 | ⊢ (𝜑 → 𝐽 ∈ (TopOn‘𝑋)) |
| elpi1.2 | ⊢ (𝜑 → 𝑌 ∈ 𝑋) |
| Ref | Expression |
|---|---|
| elpi1 | ⊢ (𝜑 → (𝐹 ∈ 𝐵 ↔ ∃𝑓 ∈ (II Cn 𝐽)(((𝑓‘0) = 𝑌 ∧ (𝑓‘1) = 𝑌) ∧ 𝐹 = [𝑓]( ≃ph‘𝐽)))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elpi1.g | . . . 4 ⊢ 𝐺 = (𝐽 π1 𝑌) | |
| 2 | elpi1.1 | . . . 4 ⊢ (𝜑 → 𝐽 ∈ (TopOn‘𝑋)) | |
| 3 | elpi1.2 | . . . 4 ⊢ (𝜑 → 𝑌 ∈ 𝑋) | |
| 4 | elpi1.b | . . . . 5 ⊢ 𝐵 = (Base‘𝐺) | |
| 5 | 4 | a1i 11 | . . . 4 ⊢ (𝜑 → 𝐵 = (Base‘𝐺)) |
| 6 | 1, 2, 3, 5 | pi1bas2 25169 | . . 3 ⊢ (𝜑 → 𝐵 = (∪ 𝐵 / ( ≃ph‘𝐽))) |
| 7 | 6 | eleq2d 2855 | . 2 ⊢ (𝜑 → (𝐹 ∈ 𝐵 ↔ 𝐹 ∈ (∪ 𝐵 / ( ≃ph‘𝐽)))) |
| 8 | elex 3484 | . . . 4 ⊢ (𝐹 ∈ (∪ 𝐵 / ( ≃ph‘𝐽)) → 𝐹 ∈ V) | |
| 9 | id 23 | . . . . . 6 ⊢ (𝐹 = [𝑓]( ≃ph‘𝐽) → 𝐹 = [𝑓]( ≃ph‘𝐽)) | |
| 10 | fvex 6895 | . . . . . . 7 ⊢ ( ≃ph‘𝐽) ∈ V | |
| 11 | ecexg 8698 | . . . . . . 7 ⊢ (( ≃ph‘𝐽) ∈ V → [𝑓]( ≃ph‘𝐽) ∈ V) | |
| 12 | 10, 11 | ax-mp 5 | . . . . . 6 ⊢ [𝑓]( ≃ph‘𝐽) ∈ V |
| 13 | 9, 12 | eqeltrdi 2877 | . . . . 5 ⊢ (𝐹 = [𝑓]( ≃ph‘𝐽) → 𝐹 ∈ V) |
| 14 | 13 | rexlimivw 3168 | . . . 4 ⊢ (∃𝑓 ∈ ∪ 𝐵𝐹 = [𝑓]( ≃ph‘𝐽) → 𝐹 ∈ V) |
| 15 | elqsg 8761 | . . . 4 ⊢ (𝐹 ∈ V → (𝐹 ∈ (∪ 𝐵 / ( ≃ph‘𝐽)) ↔ ∃𝑓 ∈ ∪ 𝐵𝐹 = [𝑓]( ≃ph‘𝐽))) | |
| 16 | 8, 14, 15 | pm5.21nii 381 | . . 3 ⊢ (𝐹 ∈ (∪ 𝐵 / ( ≃ph‘𝐽)) ↔ ∃𝑓 ∈ ∪ 𝐵𝐹 = [𝑓]( ≃ph‘𝐽)) |
| 17 | 1, 2, 3, 5 | pi1eluni 25170 | . . . . . . 7 ⊢ (𝜑 → (𝑓 ∈ ∪ 𝐵 ↔ (𝑓 ∈ (II Cn 𝐽) ∧ (𝑓‘0) = 𝑌 ∧ (𝑓‘1) = 𝑌))) |
| 18 | 3anass 1109 | . . . . . . 7 ⊢ ((𝑓 ∈ (II Cn 𝐽) ∧ (𝑓‘0) = 𝑌 ∧ (𝑓‘1) = 𝑌) ↔ (𝑓 ∈ (II Cn 𝐽) ∧ ((𝑓‘0) = 𝑌 ∧ (𝑓‘1) = 𝑌))) | |
| 19 | 17, 18 | bitrdi 290 | . . . . . 6 ⊢ (𝜑 → (𝑓 ∈ ∪ 𝐵 ↔ (𝑓 ∈ (II Cn 𝐽) ∧ ((𝑓‘0) = 𝑌 ∧ (𝑓‘1) = 𝑌)))) |
| 20 | 19 | anbi1d 642 | . . . . 5 ⊢ (𝜑 → ((𝑓 ∈ ∪ 𝐵 ∧ 𝐹 = [𝑓]( ≃ph‘𝐽)) ↔ ((𝑓 ∈ (II Cn 𝐽) ∧ ((𝑓‘0) = 𝑌 ∧ (𝑓‘1) = 𝑌)) ∧ 𝐹 = [𝑓]( ≃ph‘𝐽)))) |
| 21 | anass 473 | . . . . 5 ⊢ (((𝑓 ∈ (II Cn 𝐽) ∧ ((𝑓‘0) = 𝑌 ∧ (𝑓‘1) = 𝑌)) ∧ 𝐹 = [𝑓]( ≃ph‘𝐽)) ↔ (𝑓 ∈ (II Cn 𝐽) ∧ (((𝑓‘0) = 𝑌 ∧ (𝑓‘1) = 𝑌) ∧ 𝐹 = [𝑓]( ≃ph‘𝐽)))) | |
| 22 | 20, 21 | bitrdi 290 | . . . 4 ⊢ (𝜑 → ((𝑓 ∈ ∪ 𝐵 ∧ 𝐹 = [𝑓]( ≃ph‘𝐽)) ↔ (𝑓 ∈ (II Cn 𝐽) ∧ (((𝑓‘0) = 𝑌 ∧ (𝑓‘1) = 𝑌) ∧ 𝐹 = [𝑓]( ≃ph‘𝐽))))) |
| 23 | 22 | rexbidv2 3191 | . . 3 ⊢ (𝜑 → (∃𝑓 ∈ ∪ 𝐵𝐹 = [𝑓]( ≃ph‘𝐽) ↔ ∃𝑓 ∈ (II Cn 𝐽)(((𝑓‘0) = 𝑌 ∧ (𝑓‘1) = 𝑌) ∧ 𝐹 = [𝑓]( ≃ph‘𝐽)))) |
| 24 | 16, 23 | bitrid 286 | . 2 ⊢ (𝜑 → (𝐹 ∈ (∪ 𝐵 / ( ≃ph‘𝐽)) ↔ ∃𝑓 ∈ (II Cn 𝐽)(((𝑓‘0) = 𝑌 ∧ (𝑓‘1) = 𝑌) ∧ 𝐹 = [𝑓]( ≃ph‘𝐽)))) |
| 25 | 7, 24 | bitrd 282 | 1 ⊢ (𝜑 → (𝐹 ∈ 𝐵 ↔ ∃𝑓 ∈ (II Cn 𝐽)(((𝑓‘0) = 𝑌 ∧ (𝑓‘1) = 𝑌) ∧ 𝐹 = [𝑓]( ≃ph‘𝐽)))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 209 ∧ wa 400 ∧ w3a 1101 = wceq 1567 ∈ wcel 2149 ∃wrex 3095 Vcvv 3463 ∪ cuni 4876 ‘cfv 6537 (class class class)co 7411 [cec 8692 / cqs 8693 0cc0 11100 1c1 11101 Basecbs 17269 TopOnctopon 23036 Cn ccn 23350 IIcii 25003 ≃phcphtpc 25097 π1 cpi1 25131 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-rep 5242 ax-sep 5261 ax-nul 5271 ax-pow 5337 ax-pr 5405 ax-un 7733 ax-cnex 11156 ax-resscn 11157 ax-1cn 11158 ax-icn 11159 ax-addcl 11160 ax-addrcl 11161 ax-mulcl 11162 ax-mulrcl 11163 ax-mulcom 11164 ax-addass 11165 ax-mulass 11166 ax-distr 11167 ax-i2m1 11168 ax-1ne0 11169 ax-1rid 11170 ax-rnegex 11171 ax-rrecex 11172 ax-cnre 11173 ax-pre-lttri 11174 ax-pre-lttrn 11175 ax-pre-ltadd 11176 ax-pre-mulgt0 11177 ax-pre-sup 11178 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-rmo 3376 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-pss 3933 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-tp 4599 df-op 4601 df-uni 4877 df-int 4917 df-iun 4962 df-iin 4963 df-br 5114 df-opab 5178 df-mpt 5197 df-tr 5223 df-id 5557 df-eprel 5562 df-po 5570 df-so 5571 df-fr 5615 df-se 5616 df-we 5617 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-isom 6546 df-riota 7368 df-ov 7414 df-oprab 7415 df-mpo 7416 df-of 7675 df-om 7863 df-1st 7986 df-2nd 7987 df-supp 8157 df-frecs 8278 df-wrecs 8309 df-recs 8358 df-rdg 8397 df-1o 8453 df-2o 8454 df-er 8694 df-ec 8696 df-qs 8700 df-map 8826 df-ixp 8896 df-en 8944 df-dom 8945 df-sdom 8946 df-fin 8947 df-fsupp 9322 df-fi 9371 df-sup 9402 df-inf 9403 df-oi 9472 df-card 9925 df-pnf 11245 df-mnf 11246 df-xr 11247 df-ltxr 11248 df-le 11249 df-sub 11443 df-neg 11444 df-div 11872 df-nn 12234 df-2 12303 df-3 12304 df-4 12305 df-5 12306 df-6 12307 df-7 12308 df-8 12309 df-9 12310 df-n0 12505 df-z 12592 df-dec 12712 df-uz 12863 df-q 12973 df-rp 13017 df-xneg 13137 df-xadd 13138 df-xmul 13139 df-ioo 13376 df-icc 13379 df-fz 13536 df-fzo 13683 df-seq 14038 df-exp 14098 df-hash 14367 df-cj 15150 df-re 15151 df-im 15152 df-sqrt 15286 df-abs 15287 df-struct 17207 df-sets 17224 df-slot 17242 df-ndx 17254 df-base 17270 df-ress 17291 df-plusg 17323 df-mulr 17324 df-starv 17325 df-sca 17326 df-vsca 17327 df-ip 17328 df-tset 17329 df-ple 17330 df-ds 17332 df-unif 17333 df-hom 17334 df-cco 17335 df-rest 17475 df-topn 17476 df-0g 17494 df-gsum 17495 df-topgen 17496 df-pt 17497 df-prds 17500 df-xrs 17556 df-qtop 17561 df-imas 17562 df-qus 17563 df-xps 17564 df-mre 17638 df-mrc 17639 df-acs 17641 df-mgm 18698 df-sgrp 18777 df-mnd 18793 df-submnd 18842 df-mulg 19134 df-cntz 19387 df-cmn 19852 df-psmet 21483 df-xmet 21484 df-met 21485 df-bl 21486 df-mopn 21487 df-cnfld 21492 df-top 23020 df-topon 23037 df-topsp 23059 df-bases 23072 df-cld 23145 df-cn 23353 df-cnp 23354 df-tx 23688 df-hmeo 23881 df-xms 24446 df-ms 24447 df-tms 24448 df-ii 25005 df-htpy 25098 df-phtpy 25099 df-phtpc 25120 df-om1 25134 df-pi1 25136 |
| This theorem is referenced by: elpi1i 25174 sconnpi1 35664 |
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