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| Description: Equality deduction for negatives. |
| Ref | Expression |
|---|---|
| negeqd.1 |
|
| Ref | Expression |
|---|---|
| negeqd |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | negeqd.1 |
. 2
| |
| 2 | negeq 5339 |
. 2
| |
| 3 | 1, 2 | syl 10 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: hbnegd 5343 csbnegg 5344 negnegt 5373 mulneg1t 5431 mulneg2t 5432 negdit 5435 negsubdit 5437 mulm1t 5451 divnegt 5738 infmsup 6023 discrlem2 6595 renegt 6747 imnegt 6750 cjnegt 6757 infcvgaux1 7162 infcvgaux2 7163 geolimi 7179 negfcncf 7212 dsupivthlem 7234 sinnegt 7392 sincossqt 7411 nvabs 8253 ipasslem2 8435 minvecex 8522 efimpi 8634 projlem8 9132 projlem10 9134 projlem15 9139 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 960 ax-gen 961 ax-8 962 ax-10 964 ax-11 965 ax-12 966 ax-13 967 ax-14 968 ax-17 969 ax-4 971 ax-5o 973 ax-6o 976 ax-9o 1121 ax-10o 1138 ax-16 1208 ax-11o 1216 ax-ext 1457 ax-sep 2698 ax-pow 2737 ax-pr 2774 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 979 df-sb 1170 df-eu 1380 df-mo 1381 df-clab 1462 df-cleq 1467 df-clel 1470 df-ne 1584 df-v 1808 df-dif 2045 df-un 2046 df-in 2047 df-ss 2049 df-nul 2277 df-pw 2398 df-sn 2408 df-pr 2409 df-op 2412 df-uni 2499 df-br 2615 df-opab 2662 df-xp 3179 df-cnv 3181 df-dm 3183 df-rn 3184 df-res 3185 df-ima 3186 df-fv 3193 df-opr 3956 df-neg 5338 |