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Mirrors > Home > MPE Home > Th. List > Mathboxes > uzn0d | Structured version Visualization version GIF version |
Description: The upper integers are all nonempty. (Contributed by Glauco Siliprandi, 23-Oct-2021.) |
Ref | Expression |
---|---|
uzn0d.1 | ⊢ (𝜑 → 𝑀 ∈ ℤ) |
uzn0d.2 | ⊢ 𝑍 = (ℤ≥‘𝑀) |
Ref | Expression |
---|---|
uzn0d | ⊢ (𝜑 → 𝑍 ≠ ∅) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | uzn0d.1 | . . 3 ⊢ (𝜑 → 𝑀 ∈ ℤ) | |
2 | uzn0d.2 | . . 3 ⊢ 𝑍 = (ℤ≥‘𝑀) | |
3 | 1, 2 | uzidd2 41697 | . 2 ⊢ (𝜑 → 𝑀 ∈ 𝑍) |
4 | 3 | ne0d 4303 | 1 ⊢ (𝜑 → 𝑍 ≠ ∅) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1537 ∈ wcel 2114 ≠ wne 3018 ∅c0 4293 ‘cfv 6357 ℤcz 11984 ℤ≥cuz 12246 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 ax-sep 5205 ax-nul 5212 ax-pow 5268 ax-pr 5332 ax-un 7463 ax-cnex 10595 ax-resscn 10596 ax-pre-lttri 10613 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-ne 3019 df-nel 3126 df-ral 3145 df-rex 3146 df-rab 3149 df-v 3498 df-sbc 3775 df-csb 3886 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-nul 4294 df-if 4470 df-pw 4543 df-sn 4570 df-pr 4572 df-op 4576 df-uni 4841 df-br 5069 df-opab 5131 df-mpt 5149 df-id 5462 df-xp 5563 df-rel 5564 df-cnv 5565 df-co 5566 df-dm 5567 df-rn 5568 df-res 5569 df-ima 5570 df-iota 6316 df-fun 6359 df-fn 6360 df-f 6361 df-f1 6362 df-fo 6363 df-f1o 6364 df-fv 6365 df-ov 7161 df-er 8291 df-en 8512 df-dom 8513 df-sdom 8514 df-pnf 10679 df-mnf 10680 df-xr 10681 df-ltxr 10682 df-le 10683 df-neg 10875 df-z 11985 df-uz 12247 |
This theorem is referenced by: uzn0bi 41742 limsupvaluz2 42026 limsupgtlem 42065 smfsupxr 43097 smfinflem 43098 smflimsuplem3 43103 smflimsuplem4 43104 smfliminflem 43111 |
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