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| Mirrors > Home > MPE Home > Th. List > nnct | Structured version Visualization version GIF version | ||
| Description: ℕ is countable. (Contributed by Thierry Arnoux, 29-Dec-2016.) |
| Ref | Expression |
|---|---|
| nnct | ⊢ ℕ ≼ ω |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nnenom 14027 | . 2 ⊢ ℕ ≈ ω | |
| 2 | endom 8978 | . 2 ⊢ (ℕ ≈ ω → ℕ ≼ ω) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ ℕ ≼ ω |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: class class class wbr 5112 ωcom 7864 ≈ cen 8942 ≼ cdom 8943 ℕcn 12243 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-sep 5260 ax-nul 5272 ax-pow 5339 ax-pr 5407 ax-un 7738 ax-inf2 9612 ax-cnex 11166 ax-resscn 11167 ax-1cn 11168 ax-icn 11169 ax-addcl 11170 ax-addrcl 11171 ax-mulcl 11172 ax-mulrcl 11173 ax-mulcom 11174 ax-addass 11175 ax-mulass 11176 ax-distr 11177 ax-i2m1 11178 ax-1ne0 11179 ax-1rid 11180 ax-rnegex 11181 ax-rrecex 11182 ax-cnre 11183 ax-pre-lttri 11184 ax-pre-lttrn 11185 ax-pre-ltadd 11186 ax-pre-mulgt0 11187 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-nel 3068 df-ral 3083 df-rex 3093 df-reu 3373 df-rab 3420 df-v 3460 df-sbc 3748 df-csb 3857 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-pss 3928 df-nul 4290 df-if 4491 df-pw 4567 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4876 df-iun 4961 df-br 5113 df-opab 5177 df-mpt 5196 df-tr 5222 df-id 5559 df-eprel 5564 df-po 5572 df-so 5573 df-fr 5617 df-we 5619 df-xp 5670 df-rel 5671 df-cnv 5672 df-co 5673 df-dm 5674 df-rn 5675 df-res 5676 df-ima 5677 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-om 7865 df-2nd 7989 df-frecs 8280 df-wrecs 8311 df-recs 8360 df-rdg 8399 df-er 8696 df-en 8946 df-dom 8947 df-sdom 8948 df-pnf 11255 df-mnf 11256 df-xr 11257 df-ltxr 11258 df-le 11259 df-sub 11453 df-neg 11454 df-nn 12244 df-n0 12515 df-z 12602 df-uz 12873 |
| This theorem is used by: ovolctb2 25666 fz1nnct 33161 sigaclcu2 34523 sigapildsys 34565 measiuns 34620 dya2iocct 34683 carsgclctunlem2 34722 iocborel 47102 subsaliuncl 47104 iccvonmbllem 47424 salpreimagtge 47471 salpreimaltle 47472 smflimlem1 47517 smflimlem6 47522 smfresal 47534 smfsupdmmbllem 47590 smfinfdmmbllem 47594 |
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