Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > ige2m1fz1 | GIF version |
Description: Membership of an integer greater than 1 decreased by 1 in a 1 based finite set of sequential integers (Contributed by Alexander van der Vekens, 14-Sep-2018.) |
Ref | Expression |
---|---|
ige2m1fz1 | ⊢ (𝑁 ∈ (ℤ≥‘2) → (𝑁 − 1) ∈ (1...𝑁)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1e2m1 8807 | . . . 4 ⊢ 1 = (2 − 1) | |
2 | 1 | a1i 9 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘2) → 1 = (2 − 1)) |
3 | 2 | oveq2d 5758 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘2) → (𝑁 − 1) = (𝑁 − (2 − 1))) |
4 | 2nn 8849 | . . 3 ⊢ 2 ∈ ℕ | |
5 | uzsubsubfz1 9796 | . . 3 ⊢ ((2 ∈ ℕ ∧ 𝑁 ∈ (ℤ≥‘2)) → (𝑁 − (2 − 1)) ∈ (1...𝑁)) | |
6 | 4, 5 | mpan 420 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘2) → (𝑁 − (2 − 1)) ∈ (1...𝑁)) |
7 | 3, 6 | eqeltrd 2194 | 1 ⊢ (𝑁 ∈ (ℤ≥‘2) → (𝑁 − 1) ∈ (1...𝑁)) |
Colors of variables: wff set class |
Syntax hints: → wi 4 = wceq 1316 ∈ wcel 1465 ‘cfv 5093 (class class class)co 5742 1c1 7589 − cmin 7901 ℕcn 8688 2c2 8739 ℤ≥cuz 9294 ...cfz 9758 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 588 ax-in2 589 ax-io 683 ax-5 1408 ax-7 1409 ax-gen 1410 ax-ie1 1454 ax-ie2 1455 ax-8 1467 ax-10 1468 ax-11 1469 ax-i12 1470 ax-bndl 1471 ax-4 1472 ax-13 1476 ax-14 1477 ax-17 1491 ax-i9 1495 ax-ial 1499 ax-i5r 1500 ax-ext 2099 ax-sep 4016 ax-pow 4068 ax-pr 4101 ax-un 4325 ax-setind 4422 ax-cnex 7679 ax-resscn 7680 ax-1cn 7681 ax-1re 7682 ax-icn 7683 ax-addcl 7684 ax-addrcl 7685 ax-mulcl 7686 ax-addcom 7688 ax-addass 7690 ax-distr 7692 ax-i2m1 7693 ax-0lt1 7694 ax-0id 7696 ax-rnegex 7697 ax-cnre 7699 ax-pre-ltirr 7700 ax-pre-ltwlin 7701 ax-pre-lttrn 7702 ax-pre-ltadd 7704 |
This theorem depends on definitions: df-bi 116 df-3or 948 df-3an 949 df-tru 1319 df-fal 1322 df-nf 1422 df-sb 1721 df-eu 1980 df-mo 1981 df-clab 2104 df-cleq 2110 df-clel 2113 df-nfc 2247 df-ne 2286 df-nel 2381 df-ral 2398 df-rex 2399 df-reu 2400 df-rab 2402 df-v 2662 df-sbc 2883 df-dif 3043 df-un 3045 df-in 3047 df-ss 3054 df-pw 3482 df-sn 3503 df-pr 3504 df-op 3506 df-uni 3707 df-int 3742 df-br 3900 df-opab 3960 df-mpt 3961 df-id 4185 df-xp 4515 df-rel 4516 df-cnv 4517 df-co 4518 df-dm 4519 df-rn 4520 df-res 4521 df-ima 4522 df-iota 5058 df-fun 5095 df-fn 5096 df-f 5097 df-fv 5101 df-riota 5698 df-ov 5745 df-oprab 5746 df-mpo 5747 df-pnf 7770 df-mnf 7771 df-xr 7772 df-ltxr 7773 df-le 7774 df-sub 7903 df-neg 7904 df-inn 8689 df-2 8747 df-n0 8946 df-z 9023 df-uz 9295 df-fz 9759 |
This theorem is referenced by: ige2m1fz 9858 |
Copyright terms: Public domain | W3C validator |