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Mirrors > Home > ILE Home > Th. List > eqneg | Unicode version |
Description: A number equal to its negative is zero. (Contributed by NM, 12-Jul-2005.) (Revised by Mario Carneiro, 27-May-2016.) |
Ref | Expression |
---|---|
eqneg |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1p1times 7670 |
. . 3
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2 | negid 7783 |
. . . 4
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3 | ax-1cn 7492 |
. . . . . 6
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4 | 3, 3 | addcli 7546 |
. . . . 5
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5 | 4 | mul01i 7923 |
. . . 4
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6 | 2, 5 | syl6reqr 2140 |
. . 3
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7 | 1, 6 | eqeq12d 2103 |
. 2
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8 | id 19 |
. . 3
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9 | 0cnd 7535 |
. . 3
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10 | 4 | a1i 9 |
. . 3
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11 | 1re 7541 |
. . . . . 6
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12 | 11, 11 | readdcli 7555 |
. . . . 5
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13 | 0lt1 7664 |
. . . . . 6
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14 | 11, 11, 13, 13 | addgt0ii 8023 |
. . . . 5
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15 | 12, 14 | gt0ap0ii 8158 |
. . . 4
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16 | 15 | a1i 9 |
. . 3
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17 | 8, 9, 10, 16 | mulcanapd 8184 |
. 2
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18 | negcl 7736 |
. . 3
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19 | 8, 8, 18 | addcand 7720 |
. 2
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20 | 7, 17, 19 | 3bitr3rd 218 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 580 ax-in2 581 ax-io 666 ax-5 1382 ax-7 1383 ax-gen 1384 ax-ie1 1428 ax-ie2 1429 ax-8 1441 ax-10 1442 ax-11 1443 ax-i12 1444 ax-bndl 1445 ax-4 1446 ax-13 1450 ax-14 1451 ax-17 1465 ax-i9 1469 ax-ial 1473 ax-i5r 1474 ax-ext 2071 ax-sep 3963 ax-pow 4015 ax-pr 4045 ax-un 4269 ax-setind 4366 ax-cnex 7490 ax-resscn 7491 ax-1cn 7492 ax-1re 7493 ax-icn 7494 ax-addcl 7495 ax-addrcl 7496 ax-mulcl 7497 ax-mulrcl 7498 ax-addcom 7499 ax-mulcom 7500 ax-addass 7501 ax-mulass 7502 ax-distr 7503 ax-i2m1 7504 ax-0lt1 7505 ax-1rid 7506 ax-0id 7507 ax-rnegex 7508 ax-precex 7509 ax-cnre 7510 ax-pre-ltirr 7511 ax-pre-ltwlin 7512 ax-pre-lttrn 7513 ax-pre-apti 7514 ax-pre-ltadd 7515 ax-pre-mulgt0 7516 ax-pre-mulext 7517 |
This theorem depends on definitions: df-bi 116 df-3an 927 df-tru 1293 df-fal 1296 df-nf 1396 df-sb 1694 df-eu 1952 df-mo 1953 df-clab 2076 df-cleq 2082 df-clel 2085 df-nfc 2218 df-ne 2257 df-nel 2352 df-ral 2365 df-rex 2366 df-reu 2367 df-rab 2369 df-v 2622 df-sbc 2842 df-dif 3002 df-un 3004 df-in 3006 df-ss 3013 df-pw 3435 df-sn 3456 df-pr 3457 df-op 3459 df-uni 3660 df-br 3852 df-opab 3906 df-id 4129 df-po 4132 df-iso 4133 df-xp 4457 df-rel 4458 df-cnv 4459 df-co 4460 df-dm 4461 df-iota 4993 df-fun 5030 df-fv 5036 df-riota 5622 df-ov 5669 df-oprab 5670 df-mpt2 5671 df-pnf 7578 df-mnf 7579 df-xr 7580 df-ltxr 7581 df-le 7582 df-sub 7709 df-neg 7710 df-reap 8106 df-ap 8113 |
This theorem is referenced by: eqnegd 8254 eqnegi 8262 |
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