| 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 12804 | . . . 4 ⊢ (ℤ≥‘𝑁) ⊆ ℤ | |
| 3 | 1, 2 | eqsstri 3963 | . . 3 ⊢ 𝑍 ⊆ ℤ |
| 4 | zex 12528 | . . . 4 ⊢ ℤ ∈ V | |
| 5 | ssdomg 8941 | . . . 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 45524 | . 2 ⊢ ℤ ≼ ω | |
| 9 | domtr 8948 | . 2 ⊢ ((𝑍 ≼ ℤ ∧ ℤ ≼ ω) → 𝑍 ≼ ω) | |
| 10 | 7, 8, 9 | mp2an 699 | 1 ⊢ 𝑍 ≼ ω |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1548 ∈ wcel 2121 Vcvv 3433 ⊆ wss 3885 class class class wbr 5075 ‘cfv 6489 ωcom 7810 ≼ cdom 8885 ℤcz 12519 ℤ≥cuz 12783 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-rep 5202 ax-sep 5221 ax-nul 5231 ax-pow 5297 ax-pr 5365 ax-un 7682 ax-inf2 9557 ax-cnex 11089 ax-resscn 11090 ax-1cn 11091 ax-icn 11092 ax-addcl 11093 ax-addrcl 11094 ax-mulcl 11095 ax-mulrcl 11096 ax-mulcom 11097 ax-addass 11098 ax-mulass 11099 ax-distr 11100 ax-i2m1 11101 ax-1ne0 11102 ax-1rid 11103 ax-rnegex 11104 ax-rrecex 11105 ax-cnre 11106 ax-pre-lttri 11107 ax-pre-lttrn 11108 ax-pre-ltadd 11109 ax-pre-mulgt0 11110 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-nel 3041 df-ral 3056 df-rex 3066 df-rmo 3346 df-reu 3347 df-rab 3394 df-v 3435 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-pss 3905 df-nul 4265 df-if 4458 df-pw 4534 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4842 df-int 4881 df-iun 4926 df-br 5076 df-opab 5138 df-mpt 5157 df-tr 5183 df-id 5516 df-eprel 5521 df-po 5529 df-so 5530 df-fr 5574 df-se 5575 df-we 5576 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-pred 6256 df-ord 6317 df-on 6318 df-lim 6319 df-suc 6320 df-iota 6445 df-fun 6491 df-fn 6492 df-f 6493 df-f1 6494 df-fo 6495 df-f1o 6496 df-fv 6497 df-isom 6498 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-om 7811 df-1st 7935 df-2nd 7936 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-1o 8399 df-oadd 8403 df-omul 8404 df-er 8637 df-map 8769 df-en 8888 df-dom 8889 df-sdom 8890 df-fin 8891 df-oi 9419 df-card 9858 df-acn 9861 df-pnf 11176 df-mnf 11177 df-xr 11178 df-ltxr 11179 df-le 11180 df-sub 11374 df-neg 11375 df-nn 12170 df-n0 12433 df-z 12520 df-uz 12784 |
| This theorem is referenced by: meaiunlelem 46925 meaiuninclem 46937 meaiuninc3v 46941 meaiininclem 46943 omeiunle 46974 smflimlem1 47228 smflimlem6 47233 smfpimcc 47265 smfsuplem1 47268 smfsupdmmbllem 47301 smfinfdmmbllem 47305 |
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