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| Description: 0 is a complex number. |
| Ref | Expression |
|---|---|
| 0cn |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax0re 4063 |
. 2
| |
| 2 | 1 | recn 4098 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: addid2 4113 addcant 4122 addid2t 4132 subclt 4140 negclt 4141 subaddt 4145 negid 4147 subnegt 4149 subid1 4156 negnegt 4157 subidt 4159 subid1t 4160 neg11 4164 negcon1t 4167 subeq0t 4169 neg0 4170 renegcl 4171 subdit 4184 mulzer1 4185 mulzer2 4186 mulzer1t 4188 mulzer2t 4189 mulneg1 4190 mulneg1t 4196 mul2negt 4199 negdit 4200 mul0or 4210 mul0ort 4212 divmult 4220 divclt 4223 divcan1t 4228 divcan2t 4229 divneq0bt 4230 recidt 4235 divrect 4238 divdistrt 4246 divcan3t 4251 divzer 4255 addge0 4324 add20 4329 eqneg 4378 2timest 4490 rimul 4534 elnn0 4536 nn0addclt 4551 elznn0 4576 nn0subt 4587 zltp1let 4597 0expt 4680 discrlem3 4715 sqr0 4730 sqrlem6 4736 sqrth 4757 cjret 4829 cjcjt 4830 cjaddt 4831 cjmult 4832 re0 4833 im0 4834 cj0 4835 abs00 4839 absclt 4848 absmult 4849 absgt0t 4863 abssubt 4864 abs3lemt 4865 clim0 4882 climuni 4884 hvmul0t 5004 hiidrclt 5053 hizer1t 5054 norm-iiit 5088 normpyth 5090 bcs 5101 ocsh 5164 projlem7 5199 pjthlem8 5232 pjthlem9 5233 h1de2ctlem 5460 pjmult 5579 pjnel 5665 |
| 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-un 1076 ax-pow 1077 ax-reg 1078 ax-inf 1079 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-3or 582 df-3an 583 df-ex 679 df-sb 853 df-eu 1009 df-mo 1010 df-clab 1093 df-cleq 1097 df-clel 1099 df-ne 1192 df-ral 1205 df-rex 1206 df-reu 1207 df-rab 1208 df-v 1349 df-sbc 1441 df-dif 1489 df-un 1490 df-in 1491 df-ss 1492 df-pss 1494 df-nul 1708 df-if 1777 df-pw 1799 df-sn 1811 df-pr 1812 df-tp 1814 df-op 1815 df-uni 1920 df-int 1966 df-iun 1996 df-tr 2042 df-br 2063 df-opab 2098 df-eprel 2122 df-id 2125 df-po 2128 df-so 2138 df-fr 2169 df-we 2186 df-ord 2202 df-on 2203 df-lim 2204 df-suc 2205 df-om 2373 df-xp 2424 df-rel 2425 df-cnv 2426 df-co 2427 df-dm 2428 df-rn 2429 df-res 2430 df-ima 2431 df-fun 2432 df-fn 2433 df-f 2434 df-f1 2435 df-fv 2438 df-rdg 2970 df-opr 3003 df-oprab 3004 df-1o 3104 df-oadd 3106 df-omul 3107 df-er 3200 df-ec 3202 df-qs 3205 df-ni 3794 df-pli 3795 df-mi 3796 df-lti 3797 df-plpq 3829 df-mpq 3830 df-enq 3831 df-nq 3832 df-plq 3833 df-mq 3834 df-rq 3835 df-ltq 3836 df-1q 3837 df-np 3880 df-1p 3881 df-enr 3960 df-nr 3961 df-0r 3965 df-c 4034 df-0 4035 df-r 4038 |