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| Mirrors > Home > ILE Home > Th. List > qsqeqor | Unicode version | ||
| Description: The squares of two rational numbers are equal iff one number equals the other or its negative. (Contributed by Jim Kingdon, 1-Nov-2024.) |
| Ref | Expression |
|---|---|
| qsqeqor |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | qre 10004 |
. . . . . . 7
| |
| 2 | 1 | ad3antrrr 496 |
. . . . . 6
|
| 3 | simplr 533 |
. . . . . 6
| |
| 4 | qre 10004 |
. . . . . . 7
| |
| 5 | 4 | ad3antlr 497 |
. . . . . 6
|
| 6 | simpr 110 |
. . . . . 6
| |
| 7 | sq11 11027 |
. . . . . 6
| |
| 8 | 2, 3, 5, 6, 7 | syl22anc 1279 |
. . . . 5
|
| 9 | orc 724 |
. . . . 5
| |
| 10 | 8, 9 | biimtrdi 163 |
. . . 4
|
| 11 | oveq1 6082 |
. . . . . . 7
| |
| 12 | 11 | a1i 9 |
. . . . . 6
|
| 13 | oveq1 6082 |
. . . . . . . . 9
| |
| 14 | 13 | adantl 277 |
. . . . . . . 8
|
| 15 | qcn 10013 |
. . . . . . . . . 10
| |
| 16 | sqneg 11013 |
. . . . . . . . . 10
| |
| 17 | 15, 16 | syl 14 |
. . . . . . . . 9
|
| 18 | 17 | ad2antlr 493 |
. . . . . . . 8
|
| 19 | 14, 18 | eqtrd 2271 |
. . . . . . 7
|
| 20 | 19 | ex 115 |
. . . . . 6
|
| 21 | 12, 20 | jaod 729 |
. . . . 5
|
| 22 | 21 | ad2antrr 492 |
. . . 4
|
| 23 | 10, 22 | impbid 129 |
. . 3
|
| 24 | 17 | eqeq2d 2250 |
. . . . . 6
|
| 25 | 24 | ad3antlr 497 |
. . . . 5
|
| 26 | 1 | ad3antrrr 496 |
. . . . . . 7
|
| 27 | simplr 533 |
. . . . . . 7
| |
| 28 | qnegcl 10015 |
. . . . . . . . 9
| |
| 29 | qre 10004 |
. . . . . . . . 9
| |
| 30 | 28, 29 | syl 14 |
. . . . . . . 8
|
| 31 | 30 | ad3antlr 497 |
. . . . . . 7
|
| 32 | simpr 110 |
. . . . . . . 8
| |
| 33 | 4 | le0neg1d 8835 |
. . . . . . . . 9
|
| 34 | 33 | ad3antlr 497 |
. . . . . . . 8
|
| 35 | 32, 34 | mpbid 147 |
. . . . . . 7
|
| 36 | sq11 11027 |
. . . . . . 7
| |
| 37 | 26, 27, 31, 35, 36 | syl22anc 1279 |
. . . . . 6
|
| 38 | olc 723 |
. . . . . 6
| |
| 39 | 37, 38 | biimtrdi 163 |
. . . . 5
|
| 40 | 25, 39 | sylbird 170 |
. . . 4
|
| 41 | 21 | ad2antrr 492 |
. . . 4
|
| 42 | 40, 41 | impbid 129 |
. . 3
|
| 43 | 0z 9634 |
. . . . . 6
| |
| 44 | zq 10005 |
. . . . . 6
| |
| 45 | 43, 44 | ax-mp 5 |
. . . . 5
|
| 46 | qletric 10654 |
. . . . 5
| |
| 47 | 45, 46 | mpan 428 |
. . . 4
|
| 48 | 47 | ad2antlr 493 |
. . 3
|
| 49 | 23, 42, 48 | mpjaodan 810 |
. 2
|
| 50 | qnegcl 10015 |
. . . . . . . . . 10
| |
| 51 | qre 10004 |
. . . . . . . . . 10
| |
| 52 | 50, 51 | syl 14 |
. . . . . . . . 9
|
| 53 | 52 | ad3antrrr 496 |
. . . . . . . 8
|
| 54 | simplr 533 |
. . . . . . . . 9
| |
| 55 | 1 | le0neg1d 8835 |
. . . . . . . . . 10
|
| 56 | 55 | ad3antrrr 496 |
. . . . . . . . 9
|
| 57 | 54, 56 | mpbid 147 |
. . . . . . . 8
|
| 58 | 4 | ad3antlr 497 |
. . . . . . . 8
|
| 59 | simpr 110 |
. . . . . . . 8
| |
| 60 | sq11 11027 |
. . . . . . . 8
| |
| 61 | 53, 57, 58, 59, 60 | syl22anc 1279 |
. . . . . . 7
|
| 62 | 61 | biimpd 144 |
. . . . . 6
|
| 63 | qcn 10013 |
. . . . . . . . . 10
| |
| 64 | sqneg 11013 |
. . . . . . . . . 10
| |
| 65 | 63, 64 | syl 14 |
. . . . . . . . 9
|
| 66 | 65 | adantr 276 |
. . . . . . . 8
|
| 67 | 66 | eqeq1d 2247 |
. . . . . . 7
|
| 68 | 67 | ad2antrr 492 |
. . . . . 6
|
| 69 | negcon1 8568 |
. . . . . . . . 9
| |
| 70 | 63, 15, 69 | syl2an 289 |
. . . . . . . 8
|
| 71 | eqcom 2240 |
. . . . . . . 8
| |
| 72 | 70, 71 | bitrdi 196 |
. . . . . . 7
|
| 73 | 72 | ad2antrr 492 |
. . . . . 6
|
| 74 | 62, 68, 73 | 3imtr3d 202 |
. . . . 5
|
| 75 | 74, 38 | syl6 33 |
. . . 4
|
| 76 | 21 | ad2antrr 492 |
. . . 4
|
| 77 | 75, 76 | impbid 129 |
. . 3
|
| 78 | 52 | ad3antrrr 496 |
. . . . . . 7
|
| 79 | simplr 533 |
. . . . . . . 8
| |
| 80 | 55 | ad3antrrr 496 |
. . . . . . . 8
|
| 81 | 79, 80 | mpbid 147 |
. . . . . . 7
|
| 82 | 30 | ad3antlr 497 |
. . . . . . 7
|
| 83 | simpr 110 |
. . . . . . . 8
| |
| 84 | 33 | ad3antlr 497 |
. . . . . . . 8
|
| 85 | 83, 84 | mpbid 147 |
. . . . . . 7
|
| 86 | sq11 11027 |
. . . . . . 7
| |
| 87 | 78, 81, 82, 85, 86 | syl22anc 1279 |
. . . . . 6
|
| 88 | 65, 17 | eqeqan12d 2254 |
. . . . . . 7
|
| 89 | 88 | ad2antrr 492 |
. . . . . 6
|
| 90 | 63 | ad3antrrr 496 |
. . . . . . 7
|
| 91 | 15 | ad3antlr 497 |
. . . . . . 7
|
| 92 | 90, 91 | neg11ad 8623 |
. . . . . 6
|
| 93 | 87, 89, 92 | 3bitr3d 218 |
. . . . 5
|
| 94 | 93, 9 | biimtrdi 163 |
. . . 4
|
| 95 | 21 | ad2antrr 492 |
. . . 4
|
| 96 | 94, 95 | impbid 129 |
. . 3
|
| 97 | 47 | ad2antlr 493 |
. . 3
|
| 98 | 77, 96, 97 | mpjaodan 810 |
. 2
|
| 99 | qletric 10654 |
. . . 4
| |
| 100 | 45, 99 | mpan 428 |
. . 3
|
| 101 | 100 | adantr 276 |
. 2
|
| 102 | 49, 98, 101 | mpjaodan 810 |
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-coll 4241 ax-sep 4244 ax-nul 4254 ax-pow 4306 ax-pr 4341 ax-un 4573 ax-setind 4679 ax-iinf 4730 ax-cnex 8260 ax-resscn 8261 ax-1cn 8262 ax-1re 8263 ax-icn 8264 ax-addcl 8265 ax-addrcl 8266 ax-mulcl 8267 ax-mulrcl 8268 ax-addcom 8269 ax-mulcom 8270 ax-addass 8271 ax-mulass 8272 ax-distr 8273 ax-i2m1 8274 ax-0lt1 8275 ax-1rid 8276 ax-0id 8277 ax-rnegex 8278 ax-precex 8279 ax-cnre 8280 ax-pre-ltirr 8281 ax-pre-ltwlin 8282 ax-pre-lttrn 8283 ax-pre-apti 8284 ax-pre-ltadd 8285 ax-pre-mulgt0 8286 ax-pre-mulext 8287 |
| This theorem depends on definitions: df-bi 117 df-dc 847 df-3or 1010 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-reu 2535 df-rmo 2536 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-if 3636 df-pw 3687 df-sn 3711 df-pr 3712 df-op 3714 df-uni 3931 df-int 3966 df-iun 4009 df-br 4126 df-opab 4188 df-mpt 4189 df-tr 4225 df-id 4433 df-po 4436 df-iso 4437 df-iord 4506 df-on 4508 df-ilim 4509 df-suc 4511 df-iom 4733 df-xp 4775 df-rel 4776 df-cnv 4777 df-co 4778 df-dm 4779 df-rn 4780 df-res 4781 df-ima 4782 df-iota 5332 df-fun 5374 df-fn 5375 df-f 5376 df-f1 5377 df-fo 5378 df-f1o 5379 df-fv 5380 df-riota 6028 df-ov 6078 df-oprab 6079 df-mpo 6080 df-1st 6364 df-2nd 6365 df-recs 6566 df-frec 6652 df-pnf 8352 df-mnf 8353 df-xr 8354 df-ltxr 8355 df-le 8356 df-sub 8489 df-neg 8490 df-reap 8893 df-ap 8900 df-div 8993 df-inn 9284 df-2 9342 df-n0 9543 df-z 9624 df-uz 9901 df-q 9999 df-rp 10034 df-seqfrec 10863 df-exp 10954 |
| This theorem is referenced by: 4sqlem10 13144 |
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