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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 13027 |
. 2
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3 | df-ov 5921 |
. . . . 5
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4 | opexg 4257 |
. . . . . . 7
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5 | 4 | anidms 397 |
. . . . . 6
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6 | fvsng 5754 |
. . . . . 6
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7 | 5, 6 | mpancom 422 |
. . . . 5
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8 | 3, 7 | eqtrid 2238 |
. . . 4
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9 | 1 | mnd1id 13028 |
. . . 4
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10 | 8, 9 | eqtr4d 2229 |
. . 3
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11 | oveq2 5926 |
. . . . . . 7
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12 | 11 | eqeq1d 2202 |
. . . . . 6
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13 | 12 | rexbidv 2495 |
. . . . 5
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14 | 13 | ralsng 3658 |
. . . 4
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15 | oveq1 5925 |
. . . . . 6
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16 | 15 | eqeq1d 2202 |
. . . . 5
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17 | 16 | rexsng 3659 |
. . . 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 2193 |
. . . 4
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21 | eqid 2193 |
. . . 4
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22 | eqid 2193 |
. . . 4
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23 | 20, 21, 22 | isgrp 13078 |
. . 3
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24 | snexg 4213 |
. . . . . 6
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25 | opexg 4257 |
. . . . . . . 8
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26 | 5, 25 | mpancom 422 |
. . . . . . 7
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27 | snexg 4213 |
. . . . . . 7
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28 | 26, 27 | syl 14 |
. . . . . 6
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29 | 1 | grpbaseg 12744 |
. . . . . 6
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30 | 24, 28, 29 | syl2anc 411 |
. . . . 5
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31 | 1 | grpplusgg 12745 |
. . . . . . . . 9
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32 | 24, 28, 31 | syl2anc 411 |
. . . . . . . 8
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33 | 32 | oveqd 5935 |
. . . . . . 7
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34 | 33 | eqeq1d 2202 |
. . . . . 6
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35 | 30, 34 | rexeqbidv 2707 |
. . . . 5
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36 | 30, 35 | raleqbidv 2706 |
. . . 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 946 |
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 615 ax-in2 616 ax-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-13 2166 ax-14 2167 ax-ext 2175 ax-sep 4147 ax-pow 4203 ax-pr 4238 ax-un 4464 ax-setind 4569 ax-cnex 7963 ax-resscn 7964 ax-1cn 7965 ax-1re 7966 ax-icn 7967 ax-addcl 7968 ax-addrcl 7969 ax-mulcl 7970 ax-addcom 7972 ax-addass 7974 ax-i2m1 7977 ax-0lt1 7978 ax-0id 7980 ax-rnegex 7981 ax-pre-ltirr 7984 ax-pre-ltadd 7988 |
This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1472 df-sb 1774 df-eu 2045 df-mo 2046 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-ne 2365 df-nel 2460 df-ral 2477 df-rex 2478 df-reu 2479 df-rmo 2480 df-rab 2481 df-v 2762 df-sbc 2986 df-csb 3081 df-dif 3155 df-un 3157 df-in 3159 df-ss 3166 df-nul 3447 df-pw 3603 df-sn 3624 df-pr 3625 df-op 3627 df-uni 3836 df-int 3871 df-br 4030 df-opab 4091 df-mpt 4092 df-id 4324 df-xp 4665 df-rel 4666 df-cnv 4667 df-co 4668 df-dm 4669 df-rn 4670 df-res 4671 df-iota 5215 df-fun 5256 df-fn 5257 df-fv 5262 df-riota 5873 df-ov 5921 df-pnf 8056 df-mnf 8057 df-ltxr 8059 df-inn 8983 df-2 9041 df-ndx 12621 df-slot 12622 df-base 12624 df-plusg 12708 df-0g 12869 df-mgm 12939 df-sgrp 12985 df-mnd 12998 df-grp 13075 |
This theorem is referenced by: grp1inv 13179 ring1 13555 |
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