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| Mirrors > Home > ILE Home > Th. List > ghmnsgima | Unicode version | ||
| Description: The image of a normal subgroup under a surjective homomorphism is normal. (Contributed by Mario Carneiro, 4-Feb-2015.) |
| Ref | Expression |
|---|---|
| ghmnsgima.1 |
|
| Ref | Expression |
|---|---|
| ghmnsgima |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simp1 1024 |
. . 3
| |
| 2 | nsgsubg 13958 |
. . . 4
| |
| 3 | 2 | 3ad2ant2 1046 |
. . 3
|
| 4 | ghmima 14018 |
. . 3
| |
| 5 | 1, 3, 4 | syl2anc 411 |
. 2
|
| 6 | 1 | adantr 276 |
. . . . . . 7
|
| 7 | ghmgrp1 13998 |
. . . . . . . . 9
| |
| 8 | 6, 7 | syl 14 |
. . . . . . . 8
|
| 9 | simprl 531 |
. . . . . . . 8
| |
| 10 | eqid 2234 |
. . . . . . . . . . . 12
| |
| 11 | 10 | subgss 13927 |
. . . . . . . . . . 11
|
| 12 | 3, 11 | syl 14 |
. . . . . . . . . 10
|
| 13 | 12 | adantr 276 |
. . . . . . . . 9
|
| 14 | simprr 533 |
. . . . . . . . 9
| |
| 15 | 13, 14 | sseldd 3243 |
. . . . . . . 8
|
| 16 | eqid 2234 |
. . . . . . . . 9
| |
| 17 | 10, 16 | grpcl 13763 |
. . . . . . . 8
|
| 18 | 8, 9, 15, 17 | syl3anc 1274 |
. . . . . . 7
|
| 19 | eqid 2234 |
. . . . . . . 8
| |
| 20 | eqid 2234 |
. . . . . . . 8
| |
| 21 | 10, 19, 20 | ghmsub 14004 |
. . . . . . 7
|
| 22 | 6, 18, 9, 21 | syl3anc 1274 |
. . . . . 6
|
| 23 | eqid 2234 |
. . . . . . . . 9
| |
| 24 | 10, 16, 23 | ghmlin 14001 |
. . . . . . . 8
|
| 25 | 6, 9, 15, 24 | syl3anc 1274 |
. . . . . . 7
|
| 26 | 25 | oveq1d 6073 |
. . . . . 6
|
| 27 | 22, 26 | eqtrd 2267 |
. . . . 5
|
| 28 | ghmnsgima.1 |
. . . . . . . . . 10
| |
| 29 | 10, 28 | ghmf 14000 |
. . . . . . . . 9
|
| 30 | 1, 29 | syl 14 |
. . . . . . . 8
|
| 31 | 30 | adantr 276 |
. . . . . . 7
|
| 32 | 31 | ffnd 5514 |
. . . . . 6
|
| 33 | simpl2 1028 |
. . . . . . 7
| |
| 34 | 10, 16, 19 | nsgconj 13959 |
. . . . . . 7
|
| 35 | 33, 9, 14, 34 | syl3anc 1274 |
. . . . . 6
|
| 36 | fnfvima 5926 |
. . . . . 6
| |
| 37 | 32, 13, 35, 36 | syl3anc 1274 |
. . . . 5
|
| 38 | 27, 37 | eqeltrrd 2312 |
. . . 4
|
| 39 | 38 | ralrimivva 2626 |
. . 3
|
| 40 | 30 | ffnd 5514 |
. . . . 5
|
| 41 | oveq1 6065 |
. . . . . . . . 9
| |
| 42 | id 19 |
. . . . . . . . 9
| |
| 43 | 41, 42 | oveq12d 6076 |
. . . . . . . 8
|
| 44 | 43 | eleq1d 2303 |
. . . . . . 7
|
| 45 | 44 | ralbidv 2544 |
. . . . . 6
|
| 46 | 45 | ralrn 5820 |
. . . . 5
|
| 47 | 40, 46 | syl 14 |
. . . 4
|
| 48 | simp3 1026 |
. . . . 5
| |
| 49 | 48 | raleqdv 2749 |
. . . 4
|
| 50 | oveq2 6066 |
. . . . . . . . 9
| |
| 51 | 50 | oveq1d 6073 |
. . . . . . . 8
|
| 52 | 51 | eleq1d 2303 |
. . . . . . 7
|
| 53 | 52 | ralima 5934 |
. . . . . 6
|
| 54 | 40, 12, 53 | syl2anc 411 |
. . . . 5
|
| 55 | 54 | ralbidv 2544 |
. . . 4
|
| 56 | 47, 49, 55 | 3bitr3d 218 |
. . 3
|
| 57 | 39, 56 | mpbird 167 |
. 2
|
| 58 | 28, 23, 20 | isnsg3 13960 |
. 2
|
| 59 | 5, 57, 58 | sylanbrc 417 |
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-coll 4230 ax-sep 4233 ax-pow 4292 ax-pr 4327 ax-un 4559 ax-setind 4664 ax-cnex 8234 ax-resscn 8235 ax-1cn 8236 ax-1re 8237 ax-icn 8238 ax-addcl 8239 ax-addrcl 8240 ax-mulcl 8241 ax-addcom 8243 ax-addass 8245 ax-i2m1 8248 ax-0lt1 8249 ax-0id 8251 ax-rnegex 8252 ax-pre-ltirr 8255 ax-pre-ltadd 8259 |
| 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-reu 2529 df-rmo 2530 df-rab 2531 df-v 2817 df-sbc 3046 df-csb 3142 df-dif 3216 df-un 3218 df-in 3220 df-ss 3227 df-nul 3513 df-pw 3676 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-int 3955 df-iun 3998 df-br 4115 df-opab 4177 df-mpt 4178 df-id 4419 df-xp 4760 df-rel 4761 df-cnv 4762 df-co 4763 df-dm 4764 df-rn 4765 df-res 4766 df-ima 4767 df-iota 5317 df-fun 5359 df-fn 5360 df-f 5361 df-f1 5362 df-fo 5363 df-f1o 5364 df-fv 5365 df-riota 6011 df-ov 6061 df-oprab 6062 df-mpo 6063 df-1st 6347 df-2nd 6348 df-pnf 8326 df-mnf 8327 df-ltxr 8329 df-inn 9255 df-2 9313 df-ndx 13299 df-slot 13300 df-base 13302 df-sets 13303 df-iress 13304 df-plusg 13387 df-0g 13555 df-mgm 13619 df-sgrp 13665 df-mnd 13678 df-grp 13758 df-minusg 13759 df-sbg 13760 df-subg 13923 df-nsg 13924 df-ghm 13994 |
| This theorem is referenced by: (None) |
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