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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 1031 |
. . . . . . 7
| |
| 2 | oveq1 6082 |
. . . . . . . . . . . . 13
| |
| 3 | 2 | oveq1d 6090 |
. . . . . . . . . . . 12
|
| 4 | oveq1 6082 |
. . . . . . . . . . . 12
| |
| 5 | 3, 4 | eqeq12d 2253 |
. . . . . . . . . . 11
|
| 6 | 5 | notbid 677 |
. . . . . . . . . 10
|
| 7 | 6 | rexbidv 2551 |
. . . . . . . . 9
|
| 8 | 7 | rexbidv 2551 |
. . . . . . . 8
|
| 9 | 8 | adantl 277 |
. . . . . . 7
|
| 10 | simpl2 1032 |
. . . . . . . 8
| |
| 11 | oveq2 6083 |
. . . . . . . . . . . . 13
| |
| 12 | 11 | oveq1d 6090 |
. . . . . . . . . . . 12
|
| 13 | oveq1 6082 |
. . . . . . . . . . . . 13
| |
| 14 | 13 | oveq2d 6091 |
. . . . . . . . . . . 12
|
| 15 | 12, 14 | eqeq12d 2253 |
. . . . . . . . . . 11
|
| 16 | 15 | notbid 677 |
. . . . . . . . . 10
|
| 17 | 16 | adantl 277 |
. . . . . . . . 9
|
| 18 | 17 | rexbidv 2551 |
. . . . . . . 8
|
| 19 | simpl3 1033 |
. . . . . . . . 9
| |
| 20 | oveq2 6083 |
. . . . . . . . . . . 12
| |
| 21 | oveq2 6083 |
. . . . . . . . . . . . 13
| |
| 22 | 21 | oveq2d 6091 |
. . . . . . . . . . . 12
|
| 23 | 20, 22 | eqeq12d 2253 |
. . . . . . . . . . 11
|
| 24 | 23 | notbid 677 |
. . . . . . . . . 10
|
| 25 | 24 | adantl 277 |
. . . . . . . . 9
|
| 26 | neneq 2442 |
. . . . . . . . . 10
| |
| 27 | 26 | adantl 277 |
. . . . . . . . 9
|
| 28 | 19, 25, 27 | rspcedvd 2935 |
. . . . . . . 8
|
| 29 | 10, 18, 28 | rspcedvd 2935 |
. . . . . . 7
|
| 30 | 1, 9, 29 | rspcedvd 2935 |
. . . . . 6
|
| 31 | rexnalim 2539 |
. . . . . . . . 9
| |
| 32 | 31 | reximi 2647 |
. . . . . . . 8
|
| 33 | rexnalim 2539 |
. . . . . . . 8
| |
| 34 | 32, 33 | syl 14 |
. . . . . . 7
|
| 35 | 34 | reximi 2647 |
. . . . . 6
|
| 36 | rexnalim 2539 |
. . . . . 6
| |
| 37 | 30, 35, 36 | 3syl 17 |
. . . . 5
|
| 38 | 37 | intnand 943 |
. . . 4
|
| 39 | issgrpn0.b |
. . . . 5
| |
| 40 | issgrpn0.o |
. . . . 5
| |
| 41 | 39, 40 | issgrp 13695 |
. . . 4
|
| 42 | 38, 41 | sylnibr 688 |
. . 3
|
| 43 | df-nel 2516 |
. . 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 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 4244 ax-pow 4306 ax-pr 4341 ax-un 4573 ax-cnex 8260 ax-resscn 8261 ax-1re 8263 ax-addrcl 8266 |
| 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-un 3224 df-in 3226 df-ss 3233 df-pw 3687 df-sn 3711 df-pr 3712 df-op 3714 df-uni 3931 df-int 3966 df-br 4126 df-opab 4188 df-mpt 4189 df-id 4433 df-xp 4775 df-rel 4776 df-cnv 4777 df-co 4778 df-dm 4779 df-rn 4780 df-res 4781 df-iota 5332 df-fun 5374 df-fn 5375 df-fv 5380 df-ov 6078 df-inn 9284 df-2 9342 df-ndx 13333 df-slot 13334 df-base 13336 df-plusg 13421 df-sgrp 13694 |
| This theorem is referenced by: (None) |
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