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Mirrors > Home > MPE Home > Th. List > isnsg | Structured version Visualization version Unicode version |
Description: Property of being a normal subgroup. (Contributed by Mario Carneiro, 18-Jan-2015.) |
Ref | Expression |
---|---|
isnsg.1 | |
isnsg.2 |
Ref | Expression |
---|---|
isnsg | NrmSGrp SubGrp |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-nsg 17592 | . . . 4 NrmSGrp SubGrp | |
2 | 1 | dmmptss 5631 | . . 3 NrmSGrp |
3 | elfvdm 6220 | . . 3 NrmSGrp NrmSGrp | |
4 | 2, 3 | sseldi 3601 | . 2 NrmSGrp |
5 | subgrcl 17599 | . . 3 SubGrp | |
6 | 5 | adantr 481 | . 2 SubGrp |
7 | fveq2 6191 | . . . . . 6 SubGrp SubGrp | |
8 | fvexd 6203 | . . . . . . 7 | |
9 | fveq2 6191 | . . . . . . . 8 | |
10 | isnsg.1 | . . . . . . . 8 | |
11 | 9, 10 | syl6eqr 2674 | . . . . . . 7 |
12 | fvexd 6203 | . . . . . . . 8 | |
13 | simpl 473 | . . . . . . . . . 10 | |
14 | 13 | fveq2d 6195 | . . . . . . . . 9 |
15 | isnsg.2 | . . . . . . . . 9 | |
16 | 14, 15 | syl6eqr 2674 | . . . . . . . 8 |
17 | simplr 792 | . . . . . . . . 9 | |
18 | simpr 477 | . . . . . . . . . . . . 13 | |
19 | 18 | oveqd 6667 | . . . . . . . . . . . 12 |
20 | 19 | eleq1d 2686 | . . . . . . . . . . 11 |
21 | 18 | oveqd 6667 | . . . . . . . . . . . 12 |
22 | 21 | eleq1d 2686 | . . . . . . . . . . 11 |
23 | 20, 22 | bibi12d 335 | . . . . . . . . . 10 |
24 | 17, 23 | raleqbidv 3152 | . . . . . . . . 9 |
25 | 17, 24 | raleqbidv 3152 | . . . . . . . 8 |
26 | 12, 16, 25 | sbcied2 3473 | . . . . . . 7 |
27 | 8, 11, 26 | sbcied2 3473 | . . . . . 6 |
28 | 7, 27 | rabeqbidv 3195 | . . . . 5 SubGrp SubGrp |
29 | fvex 6201 | . . . . . 6 SubGrp | |
30 | 29 | rabex 4813 | . . . . 5 SubGrp |
31 | 28, 1, 30 | fvmpt 6282 | . . . 4 NrmSGrp SubGrp |
32 | 31 | eleq2d 2687 | . . 3 NrmSGrp SubGrp |
33 | eleq2 2690 | . . . . . 6 | |
34 | eleq2 2690 | . . . . . 6 | |
35 | 33, 34 | bibi12d 335 | . . . . 5 |
36 | 35 | 2ralbidv 2989 | . . . 4 |
37 | 36 | elrab 3363 | . . 3 SubGrp SubGrp |
38 | 32, 37 | syl6bb 276 | . 2 NrmSGrp SubGrp |
39 | 4, 6, 38 | pm5.21nii 368 | 1 NrmSGrp SubGrp |
Colors of variables: wff setvar class |
Syntax hints: wb 196 wa 384 wceq 1483 wcel 1990 wral 2912 crab 2916 cvv 3200 wsbc 3435 cdm 5114 cfv 5888 (class class class)co 6650 cbs 15857 cplusg 15941 cgrp 17422 SubGrpcsubg 17588 NrmSGrpcnsg 17589 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-sbc 3436 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-br 4654 df-opab 4713 df-mpt 4730 df-id 5024 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-iota 5851 df-fun 5890 df-fv 5896 df-ov 6653 df-subg 17591 df-nsg 17592 |
This theorem is referenced by: isnsg2 17624 nsgbi 17625 nsgsubg 17626 isnsg4 17637 nmznsg 17638 ablnsg 18250 rzgrp 24300 |
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