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| Mirrors > Home > ILE Home > Th. List > negeqd | GIF version | ||
| Description: Equality deduction for negatives. (Contributed by NM, 14-May-1999.) |
| Ref | Expression |
|---|---|
| negeqd.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
| Ref | Expression |
|---|---|
| negeqd | ⊢ (𝜑 → -𝐴 = -𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | negeqd.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 2 | negeq 8482 | . 2 ⊢ (𝐴 = 𝐵 → -𝐴 = -𝐵) | |
| 3 | 1, 2 | syl 14 | 1 ⊢ (𝜑 → -𝐴 = -𝐵) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1398 -cneg 8461 |
| 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 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-ext 2216 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-rex 2528 df-v 2817 df-un 3218 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-br 4115 df-iota 5317 df-fv 5365 df-ov 6061 df-neg 8463 |
| This theorem is referenced by: negdi 8546 mulneg2 8686 mulm1 8690 eqord2 8775 mulreim 8895 apneg 8902 divnegap 8997 div2negap 9026 recgt0 9141 infrenegsupex 9944 supminfex 9947 mul2lt0rlt0 10110 ceilqval 10692 ceilid 10701 modqcyc2 10746 monoord2 10872 reneg 11578 imneg 11586 cjcj 11593 cjneg 11600 minmax 11940 minabs 11946 telfsumo2 12178 sinneg 12437 tannegap 12439 sincossq 12459 odd2np1 12584 oexpneg 12588 modgcd 12712 pcneg 13048 mulgval 13875 mulgneg 13893 ivthdec 15635 limcimolemlt 15655 dvrecap 15704 sinperlem 15799 efimpi 15810 ptolemy 15815 lgsneg1 16024 lgseisenlem1 16069 lgseisenlem4 16072 m1lgs 16084 ex-ceil 16620 |
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