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| Description: The set of natural numbers exists. |
| Ref | Expression |
|---|---|
| nnex |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | reex 5324 |
. 2
| |
| 2 | nnssre 5929 |
. 2
| |
| 3 | 1, 2 | ssexi 2725 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: nnind 5939 seq1val 6313 ser1ft 6329 ser1cl1 6331 ser1recl 6332 ser1ref 6333 ser1f2 6335 ser11 6336 ser1p1 6337 ser1mono 6338 ser1add2 6339 ser1add 6340 exp1t 6574 expp1t 6575 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 7487 acdc2lem2 7490 acdc5lem2 7493 acdclem 7495 nnenom 7499 xpnnen 7500 xpomen 7501 qnnen 7504 unbenlem 7505 ruclem5 7515 metelcls 7962 metcnp4 7967 metcn4i 7969 addcn 7983 subcn 7984 mulcn 7985 sqcn 8331 nmobndseqi 8436 minveclem33 8573 minveceu 8579 h2hcau 8844 h2hlm 8845 hcau 9046 hlim2 9055 chlim 9099 hlim0 9100 hlimcau 9102 hlimuni 9104 occllem6 9173 projlem17 9197 projlem25 9205 projlem26 9206 osumlem5 9577 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 964 ax-gen 965 ax-8 966 ax-9 967 ax-10 968 ax-11 969 ax-12 970 ax-13 971 ax-14 972 ax-17 973 ax-4 975 ax-5o 977 ax-6o 980 ax-9o 1125 ax-10o 1142 ax-16 1212 ax-11o 1220 ax-ext 1462 ax-rep 2698 ax-sep 2708 ax-nul 2715 ax-pow 2748 ax-pr 2785 ax-un 2872 ax-inf2 4634 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3or 778 df-3an 779 df-ex 983 df-sb 1174 df-eu 1384 df-mo 1385 df-clab 1467 df-cleq 1472 df-clel 1475 df-ne 1590 df-ral 1652 df-rex 1653 df-reu 1654 df-rab 1655 df-v 1815 df-sbc 1945 df-csb 2005 df-dif 2052 df-un 2053 df-in 2054 df-ss 2056 df-pss 2058 df-nul 2284 df-if 2366 df-pw 2406 df-sn 2416 df-pr 2417 df-tp 2419 df-op 2420 df-uni 2508 df-int 2538 df-iun 2572 df-br 2625 df-opab 2672 df-tr 2686 df-eprel 2838 df-id 2841 df-po 2846 df-so 2856 df-fr 2923 df-we 2940 df-ord 2957 df-on 2958 df-lim 2959 df-suc 2960 df-om 3138 df-xp 3190 df-rel 3191 df-cnv 3192 df-co 3193 df-dm 3194 df-rn 3195 df-res 3196 df-ima 3197 df-fun 3198 df-fn 3199 df-f 3200 df-fv 3204 df-rdg 3938 df-opr 3971 df-oprab 3972 df-1st 4085 df-2nd 4086 df-1o 4139 df-oadd 4141 df-omul 4142 df-er 4267 df-ec 4269 df-qs 4272 df-ni 5012 df-pli 5013 df-mi 5014 df-lti 5015 df-plpq 5047 df-mpq 5048 df-enq 5049 df-nq 5050 df-plq 5051 df-mq 5052 df-rq 5053 df-ltq 5054 df-1q 5055 df-np 5098 df-1p 5099 df-plp 5100 df-mp 5101 df-ltp 5102 df-plpr 5176 df-mpr 5177 df-enr 5178 df-nr 5179 df-plr 5180 df-mr 5181 df-ltr 5182 df-0r 5183 df-1r 5184 df-m1r 5185 df-c 5252 df-0 5253 df-1 5254 df-i 5255 df-r 5256 df-plus 5257 df-mul 5258 df-sub 5368 df-neg 5370 df-n 5927 |