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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 4307 | . . 3 ⊢ ((𝑀...𝑁) ≠ ∅ ↔ ∃𝑥 𝑥 ∈ (𝑀...𝑁)) | |
| 2 | elfzuz2 13457 | . . . 4 ⊢ (𝑥 ∈ (𝑀...𝑁) → 𝑁 ∈ (ℤ≥‘𝑀)) | |
| 3 | 2 | exlimiv 1932 | . . 3 ⊢ (∃𝑥 𝑥 ∈ (𝑀...𝑁) → 𝑁 ∈ (ℤ≥‘𝑀)) |
| 4 | 1, 3 | sylbi 217 | . 2 ⊢ ((𝑀...𝑁) ≠ ∅ → 𝑁 ∈ (ℤ≥‘𝑀)) |
| 5 | eluzfz1 13459 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑀 ∈ (𝑀...𝑁)) | |
| 6 | 5 | ne0d 4296 | . 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 1781 ∈ wcel 2114 ≠ wne 2933 ∅c0 4287 ‘cfv 6500 (class class class)co 7368 ℤ≥cuz 12763 ...cfz 13435 |
| 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-sep 5243 ax-nul 5253 ax-pow 5312 ax-pr 5379 ax-un 7690 ax-cnex 11094 ax-resscn 11095 ax-pre-lttri 11112 ax-pre-lttrn 11113 |
| 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-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-id 5527 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-ov 7371 df-oprab 7372 df-mpo 7373 df-1st 7943 df-2nd 7944 df-er 8645 df-en 8896 df-dom 8897 df-sdom 8898 df-pnf 11180 df-mnf 11181 df-xr 11182 df-ltxr 11183 df-le 11184 df-neg 11379 df-z 12501 df-uz 12764 df-fz 13436 |
| This theorem is referenced by: fzn 13468 fzfi 13907 fseqsupcl 13912 ffz0iswrd 14476 fsumrev2 15717 gsumval3 19848 pmatcollpw3fi 22741 iscmet3 25261 dchrisum0flblem1 27487 pntrsumbnd2 27546 wlkn0 29706 gsumwrd2dccat 33171 aks6d1c2lem4 42494 aks6d1c2 42497 aks6d1c6lem3 42539 fzdifsuc2 45669 stoweidlem26 46381 |
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