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Related theorems GIF version |
| Description: Equality theorem for negatives. |
| Ref | Expression |
|---|---|
| negeq | ⊢ (A = B → -A = -B) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | opreq2 3007 | . 2 ⊢ (A = B → (0 − A) = (0 − B)) | |
| 2 | df-neg 4135 | . 2 ⊢ -A = (0 − A) | |
| 3 | df-neg 4135 | . 2 ⊢ -B = (0 − B) | |
| 4 | 1, 2, 3 | 3eqtr4g 1147 | 1 ⊢ (A = B → -A = -B) |
| Colors of variables: wff set class |
| Syntax hints: → wi 2 = wceq 1091 (class class class)co 3001 0cc0 4028 − cmin 4089 -cneg 4090 |
| This theorem is referenced by: negeqi 4137 negeqd 4138 subnegt 4149 negnegt 4157 negcon1t 4167 renegclt 4172 mulneg1t 4196 mul2negt 4199 negdit 4200 ltnegt 4366 lenegt 4368 eqneg 4378 elz 4565 znegclt 4588 qnegclt 4643 absltt 4857 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-10 800 ax-11 801 ax-12 802 ax-13 804 ax-14 805 ax-16 922 ax-17 925 ax-ext 1074 ax-rep 1075 ax-pow 1077 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-ex 679 df-sb 853 df-clab 1093 df-cleq 1097 df-clel 1099 df-v 1349 df-dif 1489 df-un 1490 df-in 1491 df-ss 1492 df-nul 1708 df-pw 1799 df-sn 1811 df-pr 1812 df-op 1815 df-uni 1920 df-br 2063 df-opab 2098 df-xp 2424 df-cnv 2426 df-dm 2428 df-rn 2429 df-res 2430 df-ima 2431 df-fv 2438 df-opr 3003 df-neg 4135 |