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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 5331 |
. 2
| |
| 3 | 1, 2 | syl 10 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: hbnegd 5335 csbnegg 5336 negnegt 5365 mulneg1t 5423 mulneg2t 5424 negdit 5427 negsubdit 5429 mulm1t 5443 divnegt 5730 infmsup 6015 discrlem2 6587 renegt 6739 imnegt 6742 cjnegt 6749 infcvgaux1 7154 infcvgaux2 7155 geolimi 7171 negfcncf 7204 dsupivthlem 7226 sinnegt 7384 sincossqt 7403 nvabs 8240 ipasslem2 8422 minvecex 8509 efimpi 8615 projlem8 9109 projlem10 9111 projlem15 9116 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 959 ax-gen 960 ax-8 961 ax-10 963 ax-11 964 ax-12 965 ax-13 966 ax-14 967 ax-17 968 ax-4 970 ax-5o 972 ax-6o 975 ax-9o 1119 ax-10o 1136 ax-16 1206 ax-11o 1213 ax-ext 1452 ax-sep 2693 ax-pow 2732 ax-pr 2769 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 978 df-sb 1168 df-eu 1375 df-mo 1376 df-clab 1457 df-cleq 1462 df-clel 1465 df-ne 1579 df-v 1803 df-dif 2039 df-un 2040 df-in 2041 df-ss 2043 df-nul 2271 df-pw 2392 df-sn 2402 df-pr 2403 df-op 2406 df-uni 2494 df-br 2610 df-opab 2657 df-xp 3174 df-cnv 3176 df-dm 3178 df-rn 3179 df-res 3180 df-ima 3181 df-fv 3188 df-opr 3950 df-neg 5330 |