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| Mirrors > Home > MPE Home > Th. List > fzn0 | Structured version Visualization version GIF version | ||
| Description: Properties of a finite interval of integers which is nonempty. (Contributed by Jeff Madsen, 17-Jun-2010.) (Revised by Mario Carneiro, 28-Apr-2015.) |
| Ref | Expression |
|---|---|
| fzn0 | ⊢ ((𝑀...𝑁) ≠ ∅ ↔ 𝑁 ∈ (ℤ≥‘𝑀)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | n0 4298 | . . 3 ⊢ ((𝑀...𝑁) ≠ ∅ ↔ ∃𝑥 𝑥 ∈ (𝑀...𝑁)) | |
| 2 | elfzuz2 13424 | . . . 4 ⊢ (𝑥 ∈ (𝑀...𝑁) → 𝑁 ∈ (ℤ≥‘𝑀)) | |
| 3 | 2 | exlimiv 1931 | . . 3 ⊢ (∃𝑥 𝑥 ∈ (𝑀...𝑁) → 𝑁 ∈ (ℤ≥‘𝑀)) |
| 4 | 1, 3 | sylbi 217 | . 2 ⊢ ((𝑀...𝑁) ≠ ∅ → 𝑁 ∈ (ℤ≥‘𝑀)) |
| 5 | eluzfz1 13426 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑀 ∈ (𝑀...𝑁)) | |
| 6 | 5 | ne0d 4287 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (𝑀...𝑁) ≠ ∅) |
| 7 | 4, 6 | impbii 209 | 1 ⊢ ((𝑀...𝑁) ≠ ∅ ↔ 𝑁 ∈ (ℤ≥‘𝑀)) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 ∃wex 1780 ∈ wcel 2111 ≠ wne 2928 ∅c0 4278 ‘cfv 6476 (class class class)co 7341 ℤ≥cuz 12727 ...cfz 13402 |
| 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 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-sep 5229 ax-nul 5239 ax-pow 5298 ax-pr 5365 ax-un 7663 ax-cnex 11057 ax-resscn 11058 ax-pre-lttri 11075 ax-pre-lttrn 11076 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-nel 3033 df-ral 3048 df-rex 3057 df-rab 3396 df-v 3438 df-sbc 3737 df-csb 3846 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-nul 4279 df-if 4471 df-pw 4547 df-sn 4572 df-pr 4574 df-op 4578 df-uni 4855 df-iun 4938 df-br 5087 df-opab 5149 df-mpt 5168 df-id 5506 df-xp 5617 df-rel 5618 df-cnv 5619 df-co 5620 df-dm 5621 df-rn 5622 df-res 5623 df-ima 5624 df-iota 6432 df-fun 6478 df-fn 6479 df-f 6480 df-f1 6481 df-fo 6482 df-f1o 6483 df-fv 6484 df-ov 7344 df-oprab 7345 df-mpo 7346 df-1st 7916 df-2nd 7917 df-er 8617 df-en 8865 df-dom 8866 df-sdom 8867 df-pnf 11143 df-mnf 11144 df-xr 11145 df-ltxr 11146 df-le 11147 df-neg 11342 df-z 12464 df-uz 12728 df-fz 13403 |
| This theorem is referenced by: fzn 13435 fzfi 13874 fseqsupcl 13879 ffz0iswrd 14443 fsumrev2 15684 gsumval3 19814 pmatcollpw3fi 22695 iscmet3 25215 dchrisum0flblem1 27441 pntrsumbnd2 27500 wlkn0 29594 gsumwrd2dccat 33039 aks6d1c2lem4 42160 aks6d1c2 42163 aks6d1c6lem3 42205 fzdifsuc2 45351 stoweidlem26 46064 |
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