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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 8082 | . 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 1342 -cneg 8061 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 699 ax-5 1434 ax-7 1435 ax-gen 1436 ax-ie1 1480 ax-ie2 1481 ax-8 1491 ax-10 1492 ax-11 1493 ax-i12 1494 ax-bndl 1496 ax-4 1497 ax-17 1513 ax-i9 1517 ax-ial 1521 ax-i5r 1522 ax-ext 2146 |
This theorem depends on definitions: df-bi 116 df-3an 969 df-tru 1345 df-nf 1448 df-sb 1750 df-clab 2151 df-cleq 2157 df-clel 2160 df-nfc 2295 df-rex 2448 df-v 2723 df-un 3115 df-sn 3576 df-pr 3577 df-op 3579 df-uni 3784 df-br 3977 df-iota 5147 df-fv 5190 df-ov 5839 df-neg 8063 |
This theorem is referenced by: negdi 8146 mulneg2 8285 mulm1 8289 eqord2 8373 mulreim 8493 apneg 8500 divnegap 8593 div2negap 8622 recgt0 8736 infrenegsupex 9523 supminfex 9526 mul2lt0rlt0 9686 ceilqval 10231 ceilid 10240 modqcyc2 10285 monoord2 10402 reneg 10796 imneg 10804 cjcj 10811 cjneg 10818 minmax 11157 minabs 11163 telfsumo2 11394 sinneg 11653 tannegap 11655 sincossq 11675 odd2np1 11795 oexpneg 11799 modgcd 11909 pcneg 12233 ivthdec 13163 limcimolemlt 13174 dvrecap 13218 sinperlem 13270 efimpi 13281 ptolemy 13286 ex-ceil 13444 |
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