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| Mirrors > Home > ILE Home > Th. List > mnd1 | Unicode version | ||
| Description: The (smallest) structure representing a trivial monoid consists of one element. (Contributed by AV, 28-Apr-2019.) (Proof shortened by AV, 11-Feb-2020.) |
| Ref | Expression |
|---|---|
| mnd1.m |
|
| Ref | Expression |
|---|---|
| mnd1 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mnd1.m |
. . . 4
| |
| 2 | 1 | sgrp1 13706 |
. . 3
|
| 3 | df-ov 6081 |
. . . . . 6
| |
| 4 | opexg 4366 |
. . . . . . . 8
| |
| 5 | 4 | anidms 401 |
. . . . . . 7
|
| 6 | fvsng 5905 |
. . . . . . 7
| |
| 7 | 5, 6 | mpancom 426 |
. . . . . 6
|
| 8 | 3, 7 | eqtrid 2283 |
. . . . 5
|
| 9 | oveq2 6086 |
. . . . . . . 8
| |
| 10 | id 19 |
. . . . . . . 8
| |
| 11 | 9, 10 | eqeq12d 2253 |
. . . . . . 7
|
| 12 | oveq1 6085 |
. . . . . . . 8
| |
| 13 | 12, 10 | eqeq12d 2253 |
. . . . . . 7
|
| 14 | 11, 13 | anbi12d 477 |
. . . . . 6
|
| 15 | 14 | ralsng 3748 |
. . . . 5
|
| 16 | 8, 8, 15 | mpbir2and 957 |
. . . 4
|
| 17 | oveq1 6085 |
. . . . . . 7
| |
| 18 | 17 | eqeq1d 2247 |
. . . . . 6
|
| 19 | 18 | ovanraleqv 6102 |
. . . . 5
|
| 20 | 19 | rexsng 3749 |
. . . 4
|
| 21 | 16, 20 | mpbird 167 |
. . 3
|
| 22 | snexg 4319 |
. . . . . 6
| |
| 23 | opexg 4366 |
. . . . . . . 8
| |
| 24 | 5, 23 | mpancom 426 |
. . . . . . 7
|
| 25 | snexg 4319 |
. . . . . . 7
| |
| 26 | 24, 25 | syl 14 |
. . . . . 6
|
| 27 | 1 | grpbaseg 13461 |
. . . . . 6
|
| 28 | 22, 26, 27 | syl2anc 415 |
. . . . 5
|
| 29 | 1 | grpplusgg 13462 |
. . . . . . . . . 10
|
| 30 | 22, 26, 29 | syl2anc 415 |
. . . . . . . . 9
|
| 31 | 30 | oveqd 6095 |
. . . . . . . 8
|
| 32 | 31 | eqeq1d 2247 |
. . . . . . 7
|
| 33 | 30 | oveqd 6095 |
. . . . . . . 8
|
| 34 | 33 | eqeq1d 2247 |
. . . . . . 7
|
| 35 | 32, 34 | anbi12d 477 |
. . . . . 6
|
| 36 | 28, 35 | raleqbidv 2765 |
. . . . 5
|
| 37 | 28, 36 | rexeqbidv 2766 |
. . . 4
|
| 38 | 37 | anbi2d 468 |
. . 3
|
| 39 | 2, 21, 38 | mpbi2and 956 |
. 2
|
| 40 | eqid 2238 |
. . 3
| |
| 41 | eqid 2238 |
. . 3
| |
| 42 | 40, 41 | ismnddef 13711 |
. 2
|
| 43 | 39, 42 | sylibr 134 |
1
|
| 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 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4247 ax-pow 4309 ax-pr 4344 ax-un 4576 ax-setind 4682 ax-cnex 8263 ax-resscn 8264 ax-1cn 8265 ax-1re 8266 ax-icn 8267 ax-addcl 8268 ax-addrcl 8269 ax-mulcl 8270 ax-addcom 8272 ax-addass 8274 ax-i2m1 8277 ax-0lt1 8278 ax-0id 8280 ax-rnegex 8281 ax-pre-ltirr 8284 ax-pre-ltadd 8288 |
| This theorem depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-rab 2537 df-v 2823 df-sbc 3052 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-pw 3690 df-sn 3714 df-pr 3715 df-op 3717 df-uni 3934 df-int 3969 df-br 4129 df-opab 4191 df-mpt 4192 df-id 4436 df-xp 4778 df-rel 4779 df-cnv 4780 df-co 4781 df-dm 4782 df-rn 4783 df-res 4784 df-iota 5335 df-fun 5377 df-fn 5378 df-fv 5383 df-ov 6081 df-pnf 8355 df-mnf 8356 df-ltxr 8358 df-inn 9287 df-2 9345 df-ndx 13336 df-slot 13337 df-base 13339 df-plusg 13424 df-mgm 13656 df-sgrp 13697 df-mnd 13710 |
| This theorem is referenced by: grp1 13891 ring1 14340 |
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