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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 13641 |
. . 3
|
| 3 | df-ov 6055 |
. . . . . 6
| |
| 4 | opexg 4346 |
. . . . . . . 8
| |
| 5 | 4 | anidms 397 |
. . . . . . 7
|
| 6 | fvsng 5882 |
. . . . . . 7
| |
| 7 | 5, 6 | mpancom 422 |
. . . . . 6
|
| 8 | 3, 7 | eqtrid 2279 |
. . . . 5
|
| 9 | oveq2 6060 |
. . . . . . . 8
| |
| 10 | id 19 |
. . . . . . . 8
| |
| 11 | 9, 10 | eqeq12d 2249 |
. . . . . . 7
|
| 12 | oveq1 6059 |
. . . . . . . 8
| |
| 13 | 12, 10 | eqeq12d 2249 |
. . . . . . 7
|
| 14 | 11, 13 | anbi12d 473 |
. . . . . 6
|
| 15 | 14 | ralsng 3731 |
. . . . 5
|
| 16 | 8, 8, 15 | mpbir2and 953 |
. . . 4
|
| 17 | oveq1 6059 |
. . . . . . 7
| |
| 18 | 17 | eqeq1d 2243 |
. . . . . 6
|
| 19 | 18 | ovanraleqv 6076 |
. . . . 5
|
| 20 | 19 | rexsng 3732 |
. . . 4
|
| 21 | 16, 20 | mpbird 167 |
. . 3
|
| 22 | snexg 4299 |
. . . . . 6
| |
| 23 | opexg 4346 |
. . . . . . . 8
| |
| 24 | 5, 23 | mpancom 422 |
. . . . . . 7
|
| 25 | snexg 4299 |
. . . . . . 7
| |
| 26 | 24, 25 | syl 14 |
. . . . . 6
|
| 27 | 1 | grpbaseg 13357 |
. . . . . 6
|
| 28 | 22, 26, 27 | syl2anc 411 |
. . . . 5
|
| 29 | 1 | grpplusgg 13358 |
. . . . . . . . . 10
|
| 30 | 22, 26, 29 | syl2anc 411 |
. . . . . . . . 9
|
| 31 | 30 | oveqd 6069 |
. . . . . . . 8
|
| 32 | 31 | eqeq1d 2243 |
. . . . . . 7
|
| 33 | 30 | oveqd 6069 |
. . . . . . . 8
|
| 34 | 33 | eqeq1d 2243 |
. . . . . . 7
|
| 35 | 32, 34 | anbi12d 473 |
. . . . . 6
|
| 36 | 28, 35 | raleqbidv 2759 |
. . . . 5
|
| 37 | 28, 36 | rexeqbidv 2760 |
. . . 4
|
| 38 | 37 | anbi2d 464 |
. . 3
|
| 39 | 2, 21, 38 | mpbi2and 952 |
. 2
|
| 40 | eqid 2234 |
. . 3
| |
| 41 | eqid 2234 |
. . 3
| |
| 42 | 40, 41 | ismnddef 13648 |
. 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 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2207 ax-14 2208 ax-ext 2216 ax-sep 4230 ax-pow 4289 ax-pr 4324 ax-un 4556 ax-setind 4661 ax-cnex 8220 ax-resscn 8221 ax-1cn 8222 ax-1re 8223 ax-icn 8224 ax-addcl 8225 ax-addrcl 8226 ax-mulcl 8227 ax-addcom 8229 ax-addass 8231 ax-i2m1 8234 ax-0lt1 8235 ax-0id 8237 ax-rnegex 8238 ax-pre-ltirr 8241 ax-pre-ltadd 8245 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ne 2415 df-nel 2510 df-ral 2527 df-rex 2528 df-rab 2531 df-v 2817 df-sbc 3045 df-dif 3215 df-un 3217 df-in 3219 df-ss 3226 df-nul 3511 df-pw 3673 df-sn 3697 df-pr 3698 df-op 3700 df-uni 3917 df-int 3952 df-br 4112 df-opab 4174 df-mpt 4175 df-id 4416 df-xp 4757 df-rel 4758 df-cnv 4759 df-co 4760 df-dm 4761 df-rn 4762 df-res 4763 df-iota 5314 df-fun 5356 df-fn 5357 df-fv 5362 df-ov 6055 df-pnf 8312 df-mnf 8313 df-ltxr 8315 df-inn 9240 df-2 9298 df-ndx 13232 df-slot 13233 df-base 13235 df-plusg 13320 df-mgm 13586 df-sgrp 13632 df-mnd 13647 |
| This theorem is referenced by: grp1 13836 ring1 14220 |
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