| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > fzm | GIF version | ||
| Description: Properties of a finite interval of integers which is inhabited. (Contributed by Jim Kingdon, 15-Apr-2020.) |
| Ref | Expression |
|---|---|
| fzm | ⊢ (∃𝑥 𝑥 ∈ (𝑀...𝑁) ↔ 𝑁 ∈ (ℤ≥‘𝑀)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elfzuz2 10412 | . . 3 ⊢ (𝑥 ∈ (𝑀...𝑁) → 𝑁 ∈ (ℤ≥‘𝑀)) | |
| 2 | 1 | exlimiv 1651 | . 2 ⊢ (∃𝑥 𝑥 ∈ (𝑀...𝑁) → 𝑁 ∈ (ℤ≥‘𝑀)) |
| 3 | eluzfz1 10414 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑀 ∈ (𝑀...𝑁)) | |
| 4 | elex2 2838 | . . 3 ⊢ (𝑀 ∈ (𝑀...𝑁) → ∃𝑥 𝑥 ∈ (𝑀...𝑁)) | |
| 5 | 3, 4 | syl 14 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → ∃𝑥 𝑥 ∈ (𝑀...𝑁)) |
| 6 | 2, 5 | impbii 126 | 1 ⊢ (∃𝑥 𝑥 ∈ (𝑀...𝑁) ↔ 𝑁 ∈ (ℤ≥‘𝑀)) |
| Colors of variables: wff set class |
| Syntax hints: ↔ wb 105 ∃wex 1545 ∈ wcel 2209 ‘cfv 5372 (class class class)co 6075 ℤ≥cuz 9900 ...cfz 10390 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4244 ax-pow 4306 ax-pr 4341 ax-un 4573 ax-setind 4679 ax-cnex 8260 ax-resscn 8261 ax-pre-ltirr 8281 ax-pre-ltwlin 8282 |
| This theorem depends on definitions: df-bi 117 df-3or 1010 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-rab 2537 df-v 2823 df-sbc 3052 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3687 df-sn 3711 df-pr 3712 df-op 3714 df-uni 3931 df-br 4126 df-opab 4188 df-mpt 4189 df-id 4433 df-xp 4775 df-rel 4776 df-cnv 4777 df-co 4778 df-dm 4779 df-rn 4780 df-res 4781 df-ima 4782 df-iota 5332 df-fun 5374 df-fn 5375 df-f 5376 df-fv 5380 df-ov 6078 df-oprab 6079 df-mpo 6080 df-pnf 8352 df-mnf 8353 df-xr 8354 df-ltxr 8355 df-le 8356 df-neg 8490 df-z 9624 df-uz 9901 df-fz 10391 |
| This theorem is referenced by: fzn 10425 wlkm 16494 |
| Copyright terms: Public domain | W3C validator |