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Mirrors > Home > MPE Home > Th. List > elnn | Structured version Visualization version Unicode version |
Description: A member of a natural number is a natural number. (Contributed by NM, 21-Jun-1998.) |
Ref | Expression |
---|---|
elnn |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ordom 7074 | . 2 | |
2 | ordtr 5737 | . 2 | |
3 | trel 4759 | . 2 | |
4 | 1, 2, 3 | mp2b 10 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wa 384 wcel 1990 wtr 4752 word 5722 com 7065 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pr 4906 ax-un 6949 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3or 1038 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-sbc 3436 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-pss 3590 df-nul 3916 df-if 4087 df-sn 4178 df-pr 4180 df-tp 4182 df-op 4184 df-uni 4437 df-br 4654 df-opab 4713 df-tr 4753 df-eprel 5029 df-po 5035 df-so 5036 df-fr 5073 df-we 5075 df-ord 5726 df-on 5727 df-lim 5728 df-suc 5729 df-om 7066 |
This theorem is referenced by: nnaordi 7698 nnmordi 7711 pssnn 8178 ssnnfi 8179 unfilem1 8224 unfilem2 8225 inf3lem5 8529 cantnflt 8569 cantnfp1lem3 8577 cantnflem1d 8585 cantnflem1 8586 cnfcomlem 8596 cnfcom 8597 infpssrlem4 9128 axdc3lem2 9273 pwfseqlem3 9482 bnj1098 30854 bnj517 30955 bnj594 30982 bnj1001 31028 bnj1118 31052 bnj1128 31058 bnj1145 31061 elhf2 32282 hfelhf 32288 |
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