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Mirrors > Home > ILE Home > Th. List > grp1 | Unicode version |
Description: The (smallest) structure representing a trivial group. According to Wikipedia ("Trivial group", 28-Apr-2019, https://en.wikipedia.org/wiki/Trivial_group) "In mathematics, a trivial group is a group consisting of a single element. All such groups are isomorphic, so one often speaks of the trivial group. The single element of the trivial group is the identity element". (Contributed by AV, 28-Apr-2019.) |
Ref | Expression |
---|---|
grp1.m |
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Ref | Expression |
---|---|
grp1 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | grp1.m |
. . 3
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2 | 1 | mnd1 12847 |
. 2
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3 | df-ov 5878 |
. . . . 5
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4 | opexg 4229 |
. . . . . . 7
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5 | 4 | anidms 397 |
. . . . . 6
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6 | fvsng 5713 |
. . . . . 6
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7 | 5, 6 | mpancom 422 |
. . . . 5
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8 | 3, 7 | eqtrid 2222 |
. . . 4
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9 | 1 | mnd1id 12848 |
. . . 4
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10 | 8, 9 | eqtr4d 2213 |
. . 3
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11 | oveq2 5883 |
. . . . . . 7
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12 | 11 | eqeq1d 2186 |
. . . . . 6
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13 | 12 | rexbidv 2478 |
. . . . 5
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14 | 13 | ralsng 3633 |
. . . 4
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15 | oveq1 5882 |
. . . . . 6
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16 | 15 | eqeq1d 2186 |
. . . . 5
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17 | 16 | rexsng 3634 |
. . . 4
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18 | 14, 17 | bitrd 188 |
. . 3
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19 | 10, 18 | mpbird 167 |
. 2
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20 | eqid 2177 |
. . . 4
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21 | eqid 2177 |
. . . 4
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22 | eqid 2177 |
. . . 4
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23 | 20, 21, 22 | isgrp 12883 |
. . 3
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24 | snexg 4185 |
. . . . . 6
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25 | opexg 4229 |
. . . . . . . 8
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26 | 5, 25 | mpancom 422 |
. . . . . . 7
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27 | snexg 4185 |
. . . . . . 7
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28 | 26, 27 | syl 14 |
. . . . . 6
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29 | 1 | grpbaseg 12585 |
. . . . . 6
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30 | 24, 28, 29 | syl2anc 411 |
. . . . 5
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31 | 1 | grpplusgg 12586 |
. . . . . . . . 9
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32 | 24, 28, 31 | syl2anc 411 |
. . . . . . . 8
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33 | 32 | oveqd 5892 |
. . . . . . 7
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34 | 33 | eqeq1d 2186 |
. . . . . 6
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35 | 30, 34 | rexeqbidv 2686 |
. . . . 5
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36 | 30, 35 | raleqbidv 2685 |
. . . 4
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37 | 36 | anbi2d 464 |
. . 3
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38 | 23, 37 | bitr4id 199 |
. 2
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39 | 2, 19, 38 | mpbir2and 944 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 614 ax-in2 615 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-13 2150 ax-14 2151 ax-ext 2159 ax-sep 4122 ax-pow 4175 ax-pr 4210 ax-un 4434 ax-setind 4537 ax-cnex 7902 ax-resscn 7903 ax-1cn 7904 ax-1re 7905 ax-icn 7906 ax-addcl 7907 ax-addrcl 7908 ax-mulcl 7909 ax-addcom 7911 ax-addass 7913 ax-i2m1 7916 ax-0lt1 7917 ax-0id 7919 ax-rnegex 7920 ax-pre-ltirr 7923 ax-pre-ltadd 7927 |
This theorem depends on definitions: df-bi 117 df-3an 980 df-tru 1356 df-fal 1359 df-nf 1461 df-sb 1763 df-eu 2029 df-mo 2030 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ne 2348 df-nel 2443 df-ral 2460 df-rex 2461 df-reu 2462 df-rmo 2463 df-rab 2464 df-v 2740 df-sbc 2964 df-csb 3059 df-dif 3132 df-un 3134 df-in 3136 df-ss 3143 df-nul 3424 df-pw 3578 df-sn 3599 df-pr 3600 df-op 3602 df-uni 3811 df-int 3846 df-br 4005 df-opab 4066 df-mpt 4067 df-id 4294 df-xp 4633 df-rel 4634 df-cnv 4635 df-co 4636 df-dm 4637 df-rn 4638 df-res 4639 df-iota 5179 df-fun 5219 df-fn 5220 df-fv 5225 df-riota 5831 df-ov 5878 df-pnf 7994 df-mnf 7995 df-ltxr 7997 df-inn 8920 df-2 8978 df-ndx 12465 df-slot 12466 df-base 12468 df-plusg 12549 df-0g 12707 df-mgm 12775 df-sgrp 12808 df-mnd 12818 df-grp 12880 |
This theorem is referenced by: grp1inv 12977 ring1 13236 |
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