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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 9975 |
. . . . . . 7
| |
| 2 | 1 | ad3antrrr 492 |
. . . . . 6
|
| 3 | simplr 529 |
. . . . . 6
| |
| 4 | qre 9975 |
. . . . . . 7
| |
| 5 | 4 | ad3antlr 493 |
. . . . . 6
|
| 6 | simpr 110 |
. . . . . 6
| |
| 7 | sq11 10998 |
. . . . . 6
| |
| 8 | 2, 3, 5, 6, 7 | syl22anc 1275 |
. . . . 5
|
| 9 | orc 720 |
. . . . 5
| |
| 10 | 8, 9 | biimtrdi 163 |
. . . 4
|
| 11 | oveq1 6065 |
. . . . . . 7
| |
| 12 | 11 | a1i 9 |
. . . . . 6
|
| 13 | oveq1 6065 |
. . . . . . . . 9
| |
| 14 | 13 | adantl 277 |
. . . . . . . 8
|
| 15 | qcn 9984 |
. . . . . . . . . 10
| |
| 16 | sqneg 10984 |
. . . . . . . . . 10
| |
| 17 | 15, 16 | syl 14 |
. . . . . . . . 9
|
| 18 | 17 | ad2antlr 489 |
. . . . . . . 8
|
| 19 | 14, 18 | eqtrd 2267 |
. . . . . . 7
|
| 20 | 19 | ex 115 |
. . . . . 6
|
| 21 | 12, 20 | jaod 725 |
. . . . 5
|
| 22 | 21 | ad2antrr 488 |
. . . 4
|
| 23 | 10, 22 | impbid 129 |
. . 3
|
| 24 | 17 | eqeq2d 2246 |
. . . . . 6
|
| 25 | 24 | ad3antlr 493 |
. . . . 5
|
| 26 | 1 | ad3antrrr 492 |
. . . . . . 7
|
| 27 | simplr 529 |
. . . . . . 7
| |
| 28 | qnegcl 9986 |
. . . . . . . . 9
| |
| 29 | qre 9975 |
. . . . . . . . 9
| |
| 30 | 28, 29 | syl 14 |
. . . . . . . 8
|
| 31 | 30 | ad3antlr 493 |
. . . . . . 7
|
| 32 | simpr 110 |
. . . . . . . 8
| |
| 33 | 4 | le0neg1d 8808 |
. . . . . . . . 9
|
| 34 | 33 | ad3antlr 493 |
. . . . . . . 8
|
| 35 | 32, 34 | mpbid 147 |
. . . . . . 7
|
| 36 | sq11 10998 |
. . . . . . 7
| |
| 37 | 26, 27, 31, 35, 36 | syl22anc 1275 |
. . . . . 6
|
| 38 | olc 719 |
. . . . . 6
| |
| 39 | 37, 38 | biimtrdi 163 |
. . . . 5
|
| 40 | 25, 39 | sylbird 170 |
. . . 4
|
| 41 | 21 | ad2antrr 488 |
. . . 4
|
| 42 | 40, 41 | impbid 129 |
. . 3
|
| 43 | 0z 9605 |
. . . . . 6
| |
| 44 | zq 9976 |
. . . . . 6
| |
| 45 | 43, 44 | ax-mp 5 |
. . . . 5
|
| 46 | qletric 10625 |
. . . . 5
| |
| 47 | 45, 46 | mpan 424 |
. . . 4
|
| 48 | 47 | ad2antlr 489 |
. . 3
|
| 49 | 23, 42, 48 | mpjaodan 806 |
. 2
|
| 50 | qnegcl 9986 |
. . . . . . . . . 10
| |
| 51 | qre 9975 |
. . . . . . . . . 10
| |
| 52 | 50, 51 | syl 14 |
. . . . . . . . 9
|
| 53 | 52 | ad3antrrr 492 |
. . . . . . . 8
|
| 54 | simplr 529 |
. . . . . . . . 9
| |
| 55 | 1 | le0neg1d 8808 |
. . . . . . . . . 10
|
| 56 | 55 | ad3antrrr 492 |
. . . . . . . . 9
|
| 57 | 54, 56 | mpbid 147 |
. . . . . . . 8
|
| 58 | 4 | ad3antlr 493 |
. . . . . . . 8
|
| 59 | simpr 110 |
. . . . . . . 8
| |
| 60 | sq11 10998 |
. . . . . . . 8
| |
| 61 | 53, 57, 58, 59, 60 | syl22anc 1275 |
. . . . . . 7
|
| 62 | 61 | biimpd 144 |
. . . . . 6
|
| 63 | qcn 9984 |
. . . . . . . . . 10
| |
| 64 | sqneg 10984 |
. . . . . . . . . 10
| |
| 65 | 63, 64 | syl 14 |
. . . . . . . . 9
|
| 66 | 65 | adantr 276 |
. . . . . . . 8
|
| 67 | 66 | eqeq1d 2243 |
. . . . . . 7
|
| 68 | 67 | ad2antrr 488 |
. . . . . 6
|
| 69 | negcon1 8541 |
. . . . . . . . 9
| |
| 70 | 63, 15, 69 | syl2an 289 |
. . . . . . . 8
|
| 71 | eqcom 2236 |
. . . . . . . 8
| |
| 72 | 70, 71 | bitrdi 196 |
. . . . . . 7
|
| 73 | 72 | ad2antrr 488 |
. . . . . 6
|
| 74 | 62, 68, 73 | 3imtr3d 202 |
. . . . 5
|
| 75 | 74, 38 | syl6 33 |
. . . 4
|
| 76 | 21 | ad2antrr 488 |
. . . 4
|
| 77 | 75, 76 | impbid 129 |
. . 3
|
| 78 | 52 | ad3antrrr 492 |
. . . . . . 7
|
| 79 | simplr 529 |
. . . . . . . 8
| |
| 80 | 55 | ad3antrrr 492 |
. . . . . . . 8
|
| 81 | 79, 80 | mpbid 147 |
. . . . . . 7
|
| 82 | 30 | ad3antlr 493 |
. . . . . . 7
|
| 83 | simpr 110 |
. . . . . . . 8
| |
| 84 | 33 | ad3antlr 493 |
. . . . . . . 8
|
| 85 | 83, 84 | mpbid 147 |
. . . . . . 7
|
| 86 | sq11 10998 |
. . . . . . 7
| |
| 87 | 78, 81, 82, 85, 86 | syl22anc 1275 |
. . . . . 6
|
| 88 | 65, 17 | eqeqan12d 2250 |
. . . . . . 7
|
| 89 | 88 | ad2antrr 488 |
. . . . . 6
|
| 90 | 63 | ad3antrrr 492 |
. . . . . . 7
|
| 91 | 15 | ad3antlr 493 |
. . . . . . 7
|
| 92 | 90, 91 | neg11ad 8596 |
. . . . . 6
|
| 93 | 87, 89, 92 | 3bitr3d 218 |
. . . . 5
|
| 94 | 93, 9 | biimtrdi 163 |
. . . 4
|
| 95 | 21 | ad2antrr 488 |
. . . 4
|
| 96 | 94, 95 | impbid 129 |
. . 3
|
| 97 | 47 | ad2antlr 489 |
. . 3
|
| 98 | 77, 96, 97 | mpjaodan 806 |
. 2
|
| 99 | qletric 10625 |
. . . 4
| |
| 100 | 45, 99 | mpan 424 |
. . 3
|
| 101 | 100 | adantr 276 |
. 2
|
| 102 | 49, 98, 101 | mpjaodan 806 |
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-nul 4241 ax-pow 4292 ax-pr 4327 ax-un 4559 ax-setind 4664 ax-iinf 4715 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-mulrcl 8242 ax-addcom 8243 ax-mulcom 8244 ax-addass 8245 ax-mulass 8246 ax-distr 8247 ax-i2m1 8248 ax-0lt1 8249 ax-1rid 8250 ax-0id 8251 ax-rnegex 8252 ax-precex 8253 ax-cnre 8254 ax-pre-ltirr 8255 ax-pre-ltwlin 8256 ax-pre-lttrn 8257 ax-pre-apti 8258 ax-pre-ltadd 8259 ax-pre-mulgt0 8260 ax-pre-mulext 8261 |
| This theorem depends on definitions: df-bi 117 df-dc 843 df-3or 1006 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-if 3625 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-tr 4214 df-id 4419 df-po 4422 df-iso 4423 df-iord 4492 df-on 4494 df-ilim 4495 df-suc 4497 df-iom 4718 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-recs 6549 df-frec 6635 df-pnf 8326 df-mnf 8327 df-xr 8328 df-ltxr 8329 df-le 8330 df-sub 8462 df-neg 8463 df-reap 8866 df-ap 8873 df-div 8964 df-inn 9255 df-2 9313 df-n0 9514 df-z 9595 df-uz 9872 df-q 9970 df-rp 10005 df-seqfrec 10834 df-exp 10925 |
| This theorem is referenced by: 4sqlem10 13110 |
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