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| Description: The set of natural numbers exists. |
| Ref | Expression |
|---|---|
| nnex |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | reex 5312 |
. 2
| |
| 2 | nnssre 5927 |
. 2
| |
| 3 | 1, 2 | ssexi 2720 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: nnind 5937 seq1val 6312 ser1ft 6328 ser1cl1 6330 ser1recl 6331 ser1ref 6332 ser1f2 6334 ser11 6335 ser1p1 6336 ser1mono 6337 ser1add2 6338 ser1add 6339 exp1t 6573 expp1t 6574 ser1absdiflem 6929 facnnt 6933 fac0 6934 fac1 6935 facp1t 6936 ser1mulc 7060 climfnn 7092 climaddc 7132 climmulc 7133 caucvg3a 7164 caucvg3lem 7166 ser1f0 7170 ser1const 7171 ser1cmp 7174 ser1cmp2 7177 cvgcmp2clem 7182 infcvglem1 7221 infcvg 7224 geolim1i 7238 geoisum1 7244 geoisum1c 7245 erelem2 7320 erelem6 7324 ege2lem2 7328 ege2le3lem2 7329 acdc3lem 7486 acdc2lem2 7489 acdc5lem2 7492 acdclem 7494 nnenom 7498 xpnnen 7499 xpomen 7500 qnnen 7503 unbenlem 7504 ruclem5 7514 metelcls 7965 metcnp4 7970 metcn4i 7972 addcn 7986 subcn 7987 mulcn 7988 sqcn 8335 nmobndseqi 8440 minveclem33 8577 minveceu 8583 h2hcau 8849 h2hlm 8850 hcau 9051 hlim2 9060 chlim 9104 hlim0 9105 hlimcau 9107 hlimuni 9109 occllem6 9178 projlem17 9202 projlem25 9210 projlem26 9211 osumlem5 9582 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 962 ax-gen 963 ax-8 964 ax-9 965 ax-10 966 ax-11 967 ax-12 968 ax-13 969 ax-14 970 ax-17 971 ax-4 973 ax-5o 975 ax-6o 978 ax-9o 1123 ax-10o 1140 ax-16 1210 ax-11o 1218 ax-ext 1459 ax-rep 2693 ax-sep 2703 ax-nul 2710 ax-pow 2742 ax-pr 2779 ax-un 2866 ax-inf2 4625 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3or 776 df-3an 777 df-ex 981 df-sb 1172 df-eu 1382 df-mo 1383 df-clab 1464 df-cleq 1469 df-clel 1472 df-ne 1587 df-ral 1649 df-rex 1650 df-reu 1651 df-rab 1652 df-v 1812 df-sbc 1942 df-csb 2002 df-dif 2049 df-un 2050 df-in 2051 df-ss 2053 df-pss 2055 df-nul 2281 df-if 2362 df-pw 2402 df-sn 2412 df-pr 2413 df-tp 2415 df-op 2416 df-uni 2504 df-int 2534 df-iun 2568 df-br 2620 df-opab 2667 df-tr 2681 df-eprel 2832 df-id 2835 df-po 2840 df-so 2850 df-fr 2917 df-we 2934 df-ord 2951 df-on 2952 df-lim 2953 df-suc 2954 df-om 3132 df-xp 3184 df-rel 3185 df-cnv 3186 df-co 3187 df-dm 3188 df-rn 3189 df-res 3190 df-ima 3191 df-fun 3192 df-fn 3193 df-f 3194 df-fv 3198 df-rdg 3932 df-opr 3965 df-oprab 3966 df-1st 4079 df-2nd 4080 df-1o 4133 df-oadd 4135 df-omul 4136 df-er 4261 df-ec 4263 df-qs 4266 df-ni 5000 df-pli 5001 df-mi 5002 df-lti 5003 df-plpq 5035 df-mpq 5036 df-enq 5037 df-nq 5038 df-plq 5039 df-mq 5040 df-rq 5041 df-ltq 5042 df-1q 5043 df-np 5086 df-1p 5087 df-plp 5088 df-mp 5089 df-ltp 5090 df-plpr 5164 df-mpr 5165 df-enr 5166 df-nr 5167 df-plr 5168 df-mr 5169 df-ltr 5170 df-0r 5171 df-1r 5172 df-m1r 5173 df-c 5240 df-0 5241 df-1 5242 df-i 5243 df-r 5244 df-plus 5245 df-mul 5246 df-sub 5356 df-neg 5358 df-n 5925 |