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| Mirrors > Home > ILE Home > Th. List > negeq | GIF version | ||
| Description: Equality theorem for negatives. (Contributed by NM, 10-Feb-1995.) |
| Ref | Expression |
|---|---|
| negeq | ⊢ (𝐴 = 𝐵 → -𝐴 = -𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | oveq2 6021 | . 2 ⊢ (𝐴 = 𝐵 → (0 − 𝐴) = (0 − 𝐵)) | |
| 2 | df-neg 8343 | . 2 ⊢ -𝐴 = (0 − 𝐴) | |
| 3 | df-neg 8343 | . 2 ⊢ -𝐵 = (0 − 𝐵) | |
| 4 | 1, 2, 3 | 3eqtr4g 2287 | 1 ⊢ (𝐴 = 𝐵 → -𝐴 = -𝐵) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1395 (class class class)co 6013 0cc0 8022 − cmin 8340 -cneg 8341 |
| 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-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-rex 2514 df-v 2802 df-un 3202 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-br 4087 df-iota 5284 df-fv 5332 df-ov 6016 df-neg 8343 |
| This theorem is referenced by: negeqi 8363 negeqd 8364 neg11 8420 negf1o 8551 recexre 8748 negiso 9125 elz 9471 znegcl 9500 zaddcllemneg 9508 elz2 9541 zindd 9588 infrenegsupex 9818 supinfneg 9819 infsupneg 9820 supminfex 9821 ublbneg 9837 eqreznegel 9838 negm 9839 qnegcl 9860 xnegeq 10052 infssuzex 10483 infssuzcldc 10485 zsupssdc 10488 ceilqval 10558 exp3val 10793 expnegap0 10799 m1expcl2 10813 negfi 11779 dvdsnegb 12359 lcmneg 12636 pcexp 12872 pcneg 12888 znnen 13009 mulgneg2 13733 negcncf 15319 negfcncf 15320 lgsdir2lem4 15750 ex-ceil 16258 |
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