Metamath Proof Explorer


Theorem uzsubsubfz

Description: Membership of an integer greater than L decreased by ( L - M ) in an M-based finite set of sequential integers. (Contributed by Alexander van der Vekens, 14-Sep-2018)

Ref Expression
Assertion uzsubsubfz ⊢ L ∈ ℤ ≥ M ∧ N ∈ ℤ ≥ L → N − L − M ∈ M … N

Proof

Step Hyp Ref Expression
1 eluz2 ⊢ L ∈ ℤ ≥ M ↔ M ∈ ℤ ∧ L ∈ ℤ ∧ M ≤ L
2 eluz2 ⊢ N ∈ ℤ ≥ L ↔ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N
3 simpr ⊢ L ∈ ℤ ∧ N ∈ ℤ ∧ M ∈ ℤ → M ∈ ℤ
4 simpr ⊢ L ∈ ℤ ∧ N ∈ ℤ → N ∈ ℤ
5 4 adantr ⊢ L ∈ ℤ ∧ N ∈ ℤ ∧ M ∈ ℤ → N ∈ ℤ
6 zsubcl ⊢ L ∈ ℤ ∧ M ∈ ℤ → L − M ∈ ℤ
7 6 adantlr ⊢ L ∈ ℤ ∧ N ∈ ℤ ∧ M ∈ ℤ → L − M ∈ ℤ
8 5 7 zsubcld ⊢ L ∈ ℤ ∧ N ∈ ℤ ∧ M ∈ ℤ → N − L − M ∈ ℤ
9 3 5 8 3jca ⊢ L ∈ ℤ ∧ N ∈ ℤ ∧ M ∈ ℤ → M ∈ ℤ ∧ N ∈ ℤ ∧ N − L − M ∈ ℤ
10 9 ex ⊢ L ∈ ℤ ∧ N ∈ ℤ → M ∈ ℤ → M ∈ ℤ ∧ N ∈ ℤ ∧ N − L − M ∈ ℤ
11 10 3adant3 ⊢ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → M ∈ ℤ → M ∈ ℤ ∧ N ∈ ℤ ∧ N − L − M ∈ ℤ
12 11 com12 ⊢ M ∈ ℤ → L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → M ∈ ℤ ∧ N ∈ ℤ ∧ N − L − M ∈ ℤ
13 12 adantr ⊢ M ∈ ℤ ∧ M ≤ L → L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → M ∈ ℤ ∧ N ∈ ℤ ∧ N − L − M ∈ ℤ
14 13 imp ⊢ M ∈ ℤ ∧ M ≤ L ∧ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → M ∈ ℤ ∧ N ∈ ℤ ∧ N − L − M ∈ ℤ
15 zre ⊢ N ∈ ℤ → N ∈ ℝ
16 15 adantl ⊢ L ∈ ℤ ∧ N ∈ ℤ → N ∈ ℝ
17 16 adantr ⊢ L ∈ ℤ ∧ N ∈ ℤ ∧ M ∈ ℤ ∧ M ≤ L → N ∈ ℝ
18 zre ⊢ L ∈ ℤ → L ∈ ℝ
19 18 adantr ⊢ L ∈ ℤ ∧ N ∈ ℤ → L ∈ ℝ
20 19 adantr ⊢ L ∈ ℤ ∧ N ∈ ℤ ∧ M ∈ ℤ ∧ M ≤ L → L ∈ ℝ
21 17 20 subge0d ⊢ L ∈ ℤ ∧ N ∈ ℤ ∧ M ∈ ℤ ∧ M ≤ L → 0 ≤ N − L ↔ L ≤ N
22 21 exbiri ⊢ L ∈ ℤ ∧ N ∈ ℤ → M ∈ ℤ ∧ M ≤ L → L ≤ N → 0 ≤ N − L
23 22 com23 ⊢ L ∈ ℤ ∧ N ∈ ℤ → L ≤ N → M ∈ ℤ ∧ M ≤ L → 0 ≤ N − L
24 23 3impia ⊢ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → M ∈ ℤ ∧ M ≤ L → 0 ≤ N − L
25 24 impcom ⊢ M ∈ ℤ ∧ M ≤ L ∧ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → 0 ≤ N − L
26 zre ⊢ M ∈ ℤ → M ∈ ℝ
27 26 adantr ⊢ M ∈ ℤ ∧ M ≤ L → M ∈ ℝ
28 27 adantr ⊢ M ∈ ℤ ∧ M ≤ L ∧ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → M ∈ ℝ
29 resubcl ⊢ N ∈ ℝ ∧ L ∈ ℝ → N − L ∈ ℝ
30 15 18 29 syl2anr ⊢ L ∈ ℤ ∧ N ∈ ℤ → N − L ∈ ℝ
31 30 3adant3 ⊢ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → N − L ∈ ℝ
32 31 adantl ⊢ M ∈ ℤ ∧ M ≤ L ∧ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → N − L ∈ ℝ
33 28 32 addge02d ⊢ M ∈ ℤ ∧ M ≤ L ∧ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → 0 ≤ N − L ↔ M ≤ N - L + M
34 25 33 mpbid ⊢ M ∈ ℤ ∧ M ≤ L ∧ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → M ≤ N - L + M
35 zcn ⊢ N ∈ ℤ → N ∈ ℂ
36 35 3ad2ant2 ⊢ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → N ∈ ℂ
37 36 adantl ⊢ M ∈ ℤ ∧ M ≤ L ∧ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → N ∈ ℂ
38 zcn ⊢ L ∈ ℤ → L ∈ ℂ
39 38 3ad2ant1 ⊢ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → L ∈ ℂ
40 39 adantl ⊢ M ∈ ℤ ∧ M ≤ L ∧ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → L ∈ ℂ
41 zcn ⊢ M ∈ ℤ → M ∈ ℂ
42 41 adantr ⊢ M ∈ ℤ ∧ M ≤ L → M ∈ ℂ
43 42 adantr ⊢ M ∈ ℤ ∧ M ≤ L ∧ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → M ∈ ℂ
44 37 40 43 subsubd ⊢ M ∈ ℤ ∧ M ≤ L ∧ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → N − L − M = N - L + M
45 34 44 breqtrrd ⊢ M ∈ ℤ ∧ M ≤ L ∧ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → M ≤ N − L − M
46 18 3ad2ant1 ⊢ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → L ∈ ℝ
47 subge0 ⊢ L ∈ ℝ ∧ M ∈ ℝ → 0 ≤ L − M ↔ M ≤ L
48 46 26 47 syl2anr ⊢ M ∈ ℤ ∧ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → 0 ≤ L − M ↔ M ≤ L
49 48 exbiri ⊢ M ∈ ℤ → L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → M ≤ L → 0 ≤ L − M
50 49 com23 ⊢ M ∈ ℤ → M ≤ L → L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → 0 ≤ L − M
51 50 imp31 ⊢ M ∈ ℤ ∧ M ≤ L ∧ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → 0 ≤ L − M
52 15 3ad2ant2 ⊢ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → N ∈ ℝ
53 52 adantl ⊢ M ∈ ℤ ∧ M ≤ L ∧ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → N ∈ ℝ
54 resubcl ⊢ L ∈ ℝ ∧ M ∈ ℝ → L − M ∈ ℝ
55 46 27 54 syl2anr ⊢ M ∈ ℤ ∧ M ≤ L ∧ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → L − M ∈ ℝ
56 53 55 subge02d ⊢ M ∈ ℤ ∧ M ≤ L ∧ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → 0 ≤ L − M ↔ N − L − M ≤ N
57 51 56 mpbid ⊢ M ∈ ℤ ∧ M ≤ L ∧ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → N − L − M ≤ N
58 45 57 jca ⊢ M ∈ ℤ ∧ M ≤ L ∧ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → M ≤ N − L − M ∧ N − L − M ≤ N
59 elfz2 ⊢ N − L − M ∈ M … N ↔ M ∈ ℤ ∧ N ∈ ℤ ∧ N − L − M ∈ ℤ ∧ M ≤ N − L − M ∧ N − L − M ≤ N
60 14 58 59 sylanbrc ⊢ M ∈ ℤ ∧ M ≤ L ∧ L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → N − L − M ∈ M … N
61 60 ex ⊢ M ∈ ℤ ∧ M ≤ L → L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → N − L − M ∈ M … N
62 61 3adant2 ⊢ M ∈ ℤ ∧ L ∈ ℤ ∧ M ≤ L → L ∈ ℤ ∧ N ∈ ℤ ∧ L ≤ N → N − L − M ∈ M … N
63 2 62 biimtrid ⊢ M ∈ ℤ ∧ L ∈ ℤ ∧ M ≤ L → N ∈ ℤ ≥ L → N − L − M ∈ M … N
64 1 63 sylbi ⊢ L ∈ ℤ ≥ M → N ∈ ℤ ≥ L → N − L − M ∈ M … N
65 64 imp ⊢ L ∈ ℤ ≥ M ∧ N ∈ ℤ ≥ L → N − L − M ∈ M … N