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Mirrors > Home > MPE Home > Th. List > cardom | Structured version Visualization version Unicode version |
Description: The set of natural numbers is a cardinal number. Theorem 18.11 of [Monk1] p. 133. (Contributed by NM, 28-Oct-2003.) |
Ref | Expression |
---|---|
cardom |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | omelon 8543 | . . . 4 | |
2 | oncardid 8782 | . . . 4 | |
3 | 1, 2 | ax-mp 5 | . . 3 |
4 | nnsdom 8551 | . . . 4 | |
5 | sdomnen 7984 | . . . 4 | |
6 | 4, 5 | syl 17 | . . 3 |
7 | 3, 6 | mt2 191 | . 2 |
8 | cardonle 8783 | . . . 4 | |
9 | 1, 8 | ax-mp 5 | . . 3 |
10 | cardon 8770 | . . . 4 | |
11 | 10, 1 | onsseli 5842 | . . 3 |
12 | 9, 11 | mpbi 220 | . 2 |
13 | 7, 12 | mtpor 1695 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wn 3 wo 383 wceq 1483 wcel 1990 wss 3574 class class class wbr 4653 con0 5723 cfv 5888 com 7065 cen 7952 csdm 7954 ccrd 8761 |
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-pow 4843 ax-pr 4906 ax-un 6949 ax-inf2 8538 |
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-pw 4160 df-sn 4178 df-pr 4180 df-tp 4182 df-op 4184 df-uni 4437 df-int 4476 df-br 4654 df-opab 4713 df-mpt 4730 df-tr 4753 df-id 5024 df-eprel 5029 df-po 5035 df-so 5036 df-fr 5073 df-we 5075 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-ord 5726 df-on 5727 df-lim 5728 df-suc 5729 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-f1 5893 df-fo 5894 df-f1o 5895 df-fv 5896 df-om 7066 df-er 7742 df-en 7956 df-dom 7957 df-sdom 7958 df-fin 7959 df-card 8765 |
This theorem is referenced by: infxpidm2 8840 alephcard 8893 infenaleph 8914 alephval2 9394 pwfseqlem5 9485 |
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