Metamath Proof Explorer


Theorem ssfzo12bi

Description: Subset relationship for half-open integer ranges. (Contributed by Alexander van der Vekens, 5-Nov-2018)

Ref Expression
Assertion ssfzo12bi ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L → K ..^ L ⊆ M ..^ N ↔ M ≤ K ∧ L ≤ N

Proof

Step Hyp Ref Expression
1 df-3an ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ K < L ↔ K ∈ ℤ ∧ L ∈ ℤ ∧ K < L
2 1 biimpri ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ K < L → K ∈ ℤ ∧ L ∈ ℤ ∧ K < L
3 2 3adant2 ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L → K ∈ ℤ ∧ L ∈ ℤ ∧ K < L
4 ssfzo12 ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ K < L → K ..^ L ⊆ M ..^ N → M ≤ K ∧ L ≤ N
5 3 4 syl ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L → K ..^ L ⊆ M ..^ N → M ≤ K ∧ L ≤ N
6 elfzo2 ⊢ x ∈ K ..^ L ↔ x ∈ ℤ ≥ K ∧ L ∈ ℤ ∧ x < L
7 eluz2 ⊢ x ∈ ℤ ≥ K ↔ K ∈ ℤ ∧ x ∈ ℤ ∧ K ≤ x
8 simprrl ⊢ x ∈ ℤ ∧ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ∈ ℤ
9 8 adantr ⊢ x ∈ ℤ ∧ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ M ≤ K ∧ K ≤ x → M ∈ ℤ
10 simpll ⊢ x ∈ ℤ ∧ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ M ≤ K ∧ K ≤ x → x ∈ ℤ
11 zre ⊢ M ∈ ℤ → M ∈ ℝ
12 11 adantr ⊢ M ∈ ℤ ∧ N ∈ ℤ → M ∈ ℝ
13 12 adantl ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ∈ ℝ
14 zre ⊢ K ∈ ℤ → K ∈ ℝ
15 14 adantr ⊢ K ∈ ℤ ∧ L ∈ ℤ → K ∈ ℝ
16 15 adantr ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K ∈ ℝ
17 zre ⊢ x ∈ ℤ → x ∈ ℝ
18 17 adantr ⊢ x ∈ ℤ ∧ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → x ∈ ℝ
19 letr ⊢ M ∈ ℝ ∧ K ∈ ℝ ∧ x ∈ ℝ → M ≤ K ∧ K ≤ x → M ≤ x
20 13 16 18 19 syl2an23an ⊢ x ∈ ℤ ∧ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ≤ K ∧ K ≤ x → M ≤ x
21 20 imp ⊢ x ∈ ℤ ∧ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ M ≤ K ∧ K ≤ x → M ≤ x
22 9 10 21 3jca ⊢ x ∈ ℤ ∧ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ M ≤ K ∧ K ≤ x → M ∈ ℤ ∧ x ∈ ℤ ∧ M ≤ x
23 22 exp31 ⊢ x ∈ ℤ → K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ≤ K ∧ K ≤ x → M ∈ ℤ ∧ x ∈ ℤ ∧ M ≤ x
24 23 com23 ⊢ x ∈ ℤ → M ≤ K ∧ K ≤ x → K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ∈ ℤ ∧ x ∈ ℤ ∧ M ≤ x
25 24 expdimp ⊢ x ∈ ℤ ∧ M ≤ K → K ≤ x → K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ∈ ℤ ∧ x ∈ ℤ ∧ M ≤ x
26 25 impancom ⊢ x ∈ ℤ ∧ K ≤ x → M ≤ K → K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ∈ ℤ ∧ x ∈ ℤ ∧ M ≤ x
27 26 com13 ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ≤ K → x ∈ ℤ ∧ K ≤ x → M ∈ ℤ ∧ x ∈ ℤ ∧ M ≤ x
28 27 3adant3 ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L → M ≤ K → x ∈ ℤ ∧ K ≤ x → M ∈ ℤ ∧ x ∈ ℤ ∧ M ≤ x
29 28 com12 ⊢ M ≤ K → K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L → x ∈ ℤ ∧ K ≤ x → M ∈ ℤ ∧ x ∈ ℤ ∧ M ≤ x
30 29 adantr ⊢ M ≤ K ∧ L ≤ N → K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L → x ∈ ℤ ∧ K ≤ x → M ∈ ℤ ∧ x ∈ ℤ ∧ M ≤ x
31 30 impcom ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L ∧ M ≤ K ∧ L ≤ N → x ∈ ℤ ∧ K ≤ x → M ∈ ℤ ∧ x ∈ ℤ ∧ M ≤ x
32 31 com12 ⊢ x ∈ ℤ ∧ K ≤ x → K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L ∧ M ≤ K ∧ L ≤ N → M ∈ ℤ ∧ x ∈ ℤ ∧ M ≤ x
33 32 adantr ⊢ x ∈ ℤ ∧ K ≤ x ∧ x < L → K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L ∧ M ≤ K ∧ L ≤ N → M ∈ ℤ ∧ x ∈ ℤ ∧ M ≤ x
34 33 imp ⊢ x ∈ ℤ ∧ K ≤ x ∧ x < L ∧ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L ∧ M ≤ K ∧ L ≤ N → M ∈ ℤ ∧ x ∈ ℤ ∧ M ≤ x
35 eluz2 ⊢ x ∈ ℤ ≥ M ↔ M ∈ ℤ ∧ x ∈ ℤ ∧ M ≤ x
36 34 35 sylibr ⊢ x ∈ ℤ ∧ K ≤ x ∧ x < L ∧ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L ∧ M ≤ K ∧ L ≤ N → x ∈ ℤ ≥ M
37 simpl2r ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L ∧ M ≤ K ∧ L ≤ N → N ∈ ℤ
38 37 adantl ⊢ x ∈ ℤ ∧ K ≤ x ∧ x < L ∧ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L ∧ M ≤ K ∧ L ≤ N → N ∈ ℤ
39 17 adantl ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ x ∈ ℤ → x ∈ ℝ
40 zre ⊢ L ∈ ℤ → L ∈ ℝ
41 40 ad3antlr ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ x ∈ ℤ → L ∈ ℝ
42 zre ⊢ N ∈ ℤ → N ∈ ℝ
43 42 adantl ⊢ M ∈ ℤ ∧ N ∈ ℤ → N ∈ ℝ
44 43 adantl ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → N ∈ ℝ
45 44 adantr ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ x ∈ ℤ → N ∈ ℝ
46 ltletr ⊢ x ∈ ℝ ∧ L ∈ ℝ ∧ N ∈ ℝ → x < L ∧ L ≤ N → x < N
47 39 41 45 46 syl3anc ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ x ∈ ℤ → x < L ∧ L ≤ N → x < N
48 47 ex ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → x ∈ ℤ → x < L ∧ L ≤ N → x < N
49 48 com23 ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → x < L ∧ L ≤ N → x ∈ ℤ → x < N
50 49 3adant3 ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L → x < L ∧ L ≤ N → x ∈ ℤ → x < N
51 50 expcomd ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L → L ≤ N → x < L → x ∈ ℤ → x < N
52 51 adantld ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L → M ≤ K ∧ L ≤ N → x < L → x ∈ ℤ → x < N
53 52 imp ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L ∧ M ≤ K ∧ L ≤ N → x < L → x ∈ ℤ → x < N
54 53 com13 ⊢ x ∈ ℤ → x < L → K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L ∧ M ≤ K ∧ L ≤ N → x < N
55 54 adantr ⊢ x ∈ ℤ ∧ K ≤ x → x < L → K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L ∧ M ≤ K ∧ L ≤ N → x < N
56 55 imp ⊢ x ∈ ℤ ∧ K ≤ x ∧ x < L → K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L ∧ M ≤ K ∧ L ≤ N → x < N
57 56 imp ⊢ x ∈ ℤ ∧ K ≤ x ∧ x < L ∧ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L ∧ M ≤ K ∧ L ≤ N → x < N
58 elfzo2 ⊢ x ∈ M ..^ N ↔ x ∈ ℤ ≥ M ∧ N ∈ ℤ ∧ x < N
59 36 38 57 58 syl3anbrc ⊢ x ∈ ℤ ∧ K ≤ x ∧ x < L ∧ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L ∧ M ≤ K ∧ L ≤ N → x ∈ M ..^ N
60 59 exp31 ⊢ x ∈ ℤ ∧ K ≤ x → x < L → K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L ∧ M ≤ K ∧ L ≤ N → x ∈ M ..^ N
61 60 3adant1 ⊢ K ∈ ℤ ∧ x ∈ ℤ ∧ K ≤ x → x < L → K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L ∧ M ≤ K ∧ L ≤ N → x ∈ M ..^ N
62 7 61 sylbi ⊢ x ∈ ℤ ≥ K → x < L → K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L ∧ M ≤ K ∧ L ≤ N → x ∈ M ..^ N
63 62 imp ⊢ x ∈ ℤ ≥ K ∧ x < L → K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L ∧ M ≤ K ∧ L ≤ N → x ∈ M ..^ N
64 63 3adant2 ⊢ x ∈ ℤ ≥ K ∧ L ∈ ℤ ∧ x < L → K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L ∧ M ≤ K ∧ L ≤ N → x ∈ M ..^ N
65 6 64 sylbi ⊢ x ∈ K ..^ L → K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L ∧ M ≤ K ∧ L ≤ N → x ∈ M ..^ N
66 65 com12 ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L ∧ M ≤ K ∧ L ≤ N → x ∈ K ..^ L → x ∈ M ..^ N
67 66 ssrdv ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L ∧ M ≤ K ∧ L ≤ N → K ..^ L ⊆ M ..^ N
68 67 ex ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L → M ≤ K ∧ L ≤ N → K ..^ L ⊆ M ..^ N
69 5 68 impbid ⊢ K ∈ ℤ ∧ L ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K < L → K ..^ L ⊆ M ..^ N ↔ M ≤ K ∧ L ≤ N