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| Mirrors > Home > ILE Home > Th. List > isnsgrp | Unicode version | ||
| Description: A condition for a structure not to be a semigroup. (Contributed by AV, 30-Jan-2020.) |
| Ref | Expression |
|---|---|
| issgrpn0.b |
|
| issgrpn0.o |
|
| Ref | Expression |
|---|---|
| isnsgrp |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simpl1 1026 |
. . . . . . 7
| |
| 2 | oveq1 6024 |
. . . . . . . . . . . . 13
| |
| 3 | 2 | oveq1d 6032 |
. . . . . . . . . . . 12
|
| 4 | oveq1 6024 |
. . . . . . . . . . . 12
| |
| 5 | 3, 4 | eqeq12d 2246 |
. . . . . . . . . . 11
|
| 6 | 5 | notbid 673 |
. . . . . . . . . 10
|
| 7 | 6 | rexbidv 2533 |
. . . . . . . . 9
|
| 8 | 7 | rexbidv 2533 |
. . . . . . . 8
|
| 9 | 8 | adantl 277 |
. . . . . . 7
|
| 10 | simpl2 1027 |
. . . . . . . 8
| |
| 11 | oveq2 6025 |
. . . . . . . . . . . . 13
| |
| 12 | 11 | oveq1d 6032 |
. . . . . . . . . . . 12
|
| 13 | oveq1 6024 |
. . . . . . . . . . . . 13
| |
| 14 | 13 | oveq2d 6033 |
. . . . . . . . . . . 12
|
| 15 | 12, 14 | eqeq12d 2246 |
. . . . . . . . . . 11
|
| 16 | 15 | notbid 673 |
. . . . . . . . . 10
|
| 17 | 16 | adantl 277 |
. . . . . . . . 9
|
| 18 | 17 | rexbidv 2533 |
. . . . . . . 8
|
| 19 | simpl3 1028 |
. . . . . . . . 9
| |
| 20 | oveq2 6025 |
. . . . . . . . . . . 12
| |
| 21 | oveq2 6025 |
. . . . . . . . . . . . 13
| |
| 22 | 21 | oveq2d 6033 |
. . . . . . . . . . . 12
|
| 23 | 20, 22 | eqeq12d 2246 |
. . . . . . . . . . 11
|
| 24 | 23 | notbid 673 |
. . . . . . . . . 10
|
| 25 | 24 | adantl 277 |
. . . . . . . . 9
|
| 26 | neneq 2424 |
. . . . . . . . . 10
| |
| 27 | 26 | adantl 277 |
. . . . . . . . 9
|
| 28 | 19, 25, 27 | rspcedvd 2916 |
. . . . . . . 8
|
| 29 | 10, 18, 28 | rspcedvd 2916 |
. . . . . . 7
|
| 30 | 1, 9, 29 | rspcedvd 2916 |
. . . . . 6
|
| 31 | rexnalim 2521 |
. . . . . . . . 9
| |
| 32 | 31 | reximi 2629 |
. . . . . . . 8
|
| 33 | rexnalim 2521 |
. . . . . . . 8
| |
| 34 | 32, 33 | syl 14 |
. . . . . . 7
|
| 35 | 34 | reximi 2629 |
. . . . . 6
|
| 36 | rexnalim 2521 |
. . . . . 6
| |
| 37 | 30, 35, 36 | 3syl 17 |
. . . . 5
|
| 38 | 37 | intnand 938 |
. . . 4
|
| 39 | issgrpn0.b |
. . . . 5
| |
| 40 | issgrpn0.o |
. . . . 5
| |
| 41 | 39, 40 | issgrp 13485 |
. . . 4
|
| 42 | 38, 41 | sylnibr 683 |
. . 3
|
| 43 | df-nel 2498 |
. . 3
| |
| 44 | 42, 43 | sylibr 134 |
. 2
|
| 45 | 44 | ex 115 |
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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4207 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-cnex 8122 ax-resscn 8123 ax-1re 8125 ax-addrcl 8128 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ne 2403 df-nel 2498 df-ral 2515 df-rex 2516 df-rab 2519 df-v 2804 df-sbc 3032 df-un 3204 df-in 3206 df-ss 3213 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-int 3929 df-br 4089 df-opab 4151 df-mpt 4152 df-id 4390 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-rn 4736 df-res 4737 df-iota 5286 df-fun 5328 df-fn 5329 df-fv 5334 df-ov 6020 df-inn 9143 df-2 9201 df-ndx 13084 df-slot 13085 df-base 13087 df-plusg 13172 df-sgrp 13484 |
| This theorem is referenced by: (None) |
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