| Mathbox for Glauco Siliprandi |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > uzct | Structured version Visualization version GIF version | ||
| Description: An upper integer set is countable. (Contributed by Glauco Siliprandi, 17-Aug-2020.) |
| Ref | Expression |
|---|---|
| uzct.1 | ⊢ 𝑍 = (ℤ≥‘𝑁) |
| Ref | Expression |
|---|---|
| uzct | ⊢ 𝑍 ≼ ω |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | uzct.1 | . . . 4 ⊢ 𝑍 = (ℤ≥‘𝑁) | |
| 2 | uzssz 12806 | . . . 4 ⊢ (ℤ≥‘𝑁) ⊆ ℤ | |
| 3 | 1, 2 | eqsstri 3969 | . . 3 ⊢ 𝑍 ⊆ ℤ |
| 4 | zex 12530 | . . . 4 ⊢ ℤ ∈ V | |
| 5 | ssdomg 8944 | . . . 4 ⊢ (ℤ ∈ V → (𝑍 ⊆ ℤ → 𝑍 ≼ ℤ)) | |
| 6 | 4, 5 | ax-mp 5 | . . 3 ⊢ (𝑍 ⊆ ℤ → 𝑍 ≼ ℤ) |
| 7 | 3, 6 | ax-mp 5 | . 2 ⊢ 𝑍 ≼ ℤ |
| 8 | zct 45518 | . 2 ⊢ ℤ ≼ ω | |
| 9 | domtr 8951 | . 2 ⊢ ((𝑍 ≼ ℤ ∧ ℤ ≼ ω) → 𝑍 ≼ ω) | |
| 10 | 7, 8, 9 | mp2an 693 | 1 ⊢ 𝑍 ≼ ω |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 Vcvv 3430 ⊆ wss 3890 class class class wbr 5086 ‘cfv 6496 ωcom 7814 ≼ cdom 8888 ℤcz 12521 ℤ≥cuz 12785 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5213 ax-sep 5232 ax-nul 5242 ax-pow 5306 ax-pr 5374 ax-un 7686 ax-inf2 9559 ax-cnex 11091 ax-resscn 11092 ax-1cn 11093 ax-icn 11094 ax-addcl 11095 ax-addrcl 11096 ax-mulcl 11097 ax-mulrcl 11098 ax-mulcom 11099 ax-addass 11100 ax-mulass 11101 ax-distr 11102 ax-i2m1 11103 ax-1ne0 11104 ax-1rid 11105 ax-rnegex 11106 ax-rrecex 11107 ax-cnre 11108 ax-pre-lttri 11109 ax-pre-lttrn 11110 ax-pre-ltadd 11111 ax-pre-mulgt0 11112 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rmo 3343 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-int 4891 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5523 df-eprel 5528 df-po 5536 df-so 5537 df-fr 5581 df-se 5582 df-we 5583 df-xp 5634 df-rel 5635 df-cnv 5636 df-co 5637 df-dm 5638 df-rn 5639 df-res 5640 df-ima 5641 df-pred 6263 df-ord 6324 df-on 6325 df-lim 6326 df-suc 6327 df-iota 6452 df-fun 6498 df-fn 6499 df-f 6500 df-f1 6501 df-fo 6502 df-f1o 6503 df-fv 6504 df-isom 6505 df-riota 7321 df-ov 7367 df-oprab 7368 df-mpo 7369 df-om 7815 df-1st 7939 df-2nd 7940 df-frecs 8228 df-wrecs 8259 df-recs 8308 df-rdg 8346 df-1o 8402 df-oadd 8406 df-omul 8407 df-er 8640 df-map 8772 df-en 8891 df-dom 8892 df-sdom 8893 df-fin 8894 df-oi 9422 df-card 9860 df-acn 9863 df-pnf 11178 df-mnf 11179 df-xr 11180 df-ltxr 11181 df-le 11182 df-sub 11376 df-neg 11377 df-nn 12172 df-n0 12435 df-z 12522 df-uz 12786 |
| This theorem is referenced by: meaiunlelem 46922 meaiuninclem 46934 meaiuninc3v 46938 meaiininclem 46940 omeiunle 46971 smflimlem1 47225 smflimlem6 47230 smfpimcc 47262 smfsuplem1 47265 smfsupdmmbllem 47298 smfinfdmmbllem 47302 |
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