![]() |
Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > MPE Home > Th. List > invrcn2 | Structured version Visualization version GIF version |
Description: The multiplicative inverse function is a continuous function from the unit group (that is, the nonzero numbers) to itself. (Contributed by Mario Carneiro, 5-Oct-2015.) |
Ref | Expression |
---|---|
mulrcn.j | β’ π½ = (TopOpenβπ ) |
invrcn.i | β’ πΌ = (invrβπ ) |
invrcn.u | β’ π = (Unitβπ ) |
Ref | Expression |
---|---|
invrcn2 | β’ (π β TopDRing β πΌ β ((π½ βΎt π) Cn (π½ βΎt π))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2733 | . . 3 β’ (mulGrpβπ ) = (mulGrpβπ ) | |
2 | invrcn.u | . . 3 β’ π = (Unitβπ ) | |
3 | 1, 2 | tdrgunit 23534 | . 2 β’ (π β TopDRing β ((mulGrpβπ ) βΎs π) β TopGrp) |
4 | eqid 2733 | . . . 4 β’ ((mulGrpβπ ) βΎs π) = ((mulGrpβπ ) βΎs π) | |
5 | mulrcn.j | . . . . 5 β’ π½ = (TopOpenβπ ) | |
6 | 1, 5 | mgptopn 19913 | . . . 4 β’ π½ = (TopOpenβ(mulGrpβπ )) |
7 | 4, 6 | resstopn 22553 | . . 3 β’ (π½ βΎt π) = (TopOpenβ((mulGrpβπ ) βΎs π)) |
8 | invrcn.i | . . . 4 β’ πΌ = (invrβπ ) | |
9 | 2, 4, 8 | invrfval 20107 | . . 3 β’ πΌ = (invgβ((mulGrpβπ ) βΎs π)) |
10 | 7, 9 | tgpinv 23452 | . 2 β’ (((mulGrpβπ ) βΎs π) β TopGrp β πΌ β ((π½ βΎt π) Cn (π½ βΎt π))) |
11 | 3, 10 | syl 17 | 1 β’ (π β TopDRing β πΌ β ((π½ βΎt π) Cn (π½ βΎt π))) |
Colors of variables: wff setvar class |
Syntax hints: β wi 4 = wceq 1542 β wcel 2107 βcfv 6497 (class class class)co 7358 βΎs cress 17117 βΎt crest 17307 TopOpenctopn 17308 mulGrpcmgp 19901 Unitcui 20073 invrcinvr 20105 Cn ccn 22591 TopGrpctgp 23438 TopDRingctdrg 23524 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2704 ax-rep 5243 ax-sep 5257 ax-nul 5264 ax-pow 5321 ax-pr 5385 ax-un 7673 ax-cnex 11112 ax-resscn 11113 ax-1cn 11114 ax-icn 11115 ax-addcl 11116 ax-addrcl 11117 ax-mulcl 11118 ax-mulrcl 11119 ax-mulcom 11120 ax-addass 11121 ax-mulass 11122 ax-distr 11123 ax-i2m1 11124 ax-1ne0 11125 ax-1rid 11126 ax-rnegex 11127 ax-rrecex 11128 ax-cnre 11129 ax-pre-lttri 11130 ax-pre-lttrn 11131 ax-pre-ltadd 11132 ax-pre-mulgt0 11133 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2535 df-eu 2564 df-clab 2711 df-cleq 2725 df-clel 2811 df-nfc 2886 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-reu 3353 df-rab 3407 df-v 3446 df-sbc 3741 df-csb 3857 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-pss 3930 df-nul 4284 df-if 4488 df-pw 4563 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4867 df-iun 4957 df-br 5107 df-opab 5169 df-mpt 5190 df-tr 5224 df-id 5532 df-eprel 5538 df-po 5546 df-so 5547 df-fr 5589 df-we 5591 df-xp 5640 df-rel 5641 df-cnv 5642 df-co 5643 df-dm 5644 df-rn 5645 df-res 5646 df-ima 5647 df-pred 6254 df-ord 6321 df-on 6322 df-lim 6323 df-suc 6324 df-iota 6449 df-fun 6499 df-fn 6500 df-f 6501 df-f1 6502 df-fo 6503 df-f1o 6504 df-fv 6505 df-riota 7314 df-ov 7361 df-oprab 7362 df-mpo 7363 df-om 7804 df-1st 7922 df-2nd 7923 df-frecs 8213 df-wrecs 8244 df-recs 8318 df-rdg 8357 df-er 8651 df-en 8887 df-dom 8888 df-sdom 8889 df-pnf 11196 df-mnf 11197 df-xr 11198 df-ltxr 11199 df-le 11200 df-sub 11392 df-neg 11393 df-nn 12159 df-2 12221 df-3 12222 df-4 12223 df-5 12224 df-6 12225 df-7 12226 df-8 12227 df-9 12228 df-sets 17041 df-slot 17059 df-ndx 17071 df-base 17089 df-ress 17118 df-plusg 17151 df-tset 17157 df-rest 17309 df-topn 17310 df-minusg 18757 df-mgp 19902 df-invr 20106 df-tgp 23440 df-tdrg 23528 |
This theorem is referenced by: invrcn 23548 |
Copyright terms: Public domain | W3C validator |