Metamath Proof Explorer


Theorem ldepsnlinc

Description: The reverse implication of islindeps2 does not hold for arbitrary (left) modules, see note in Roman p. 112: "... if a nontrivial linear combination of the elements ... in an R-module M is 0, ... where not all of the coefficients are 0, then we cannot conclude ... that one of the elements ... is a linear combination of the others." This means that there is at least one left module having a linearly dependent subset in which there is at least one element which is not a linear combination of the other elements of this subset. Such a left module can be constructed by using zlmodzxzequa and zlmodzxznm . (Contributed by AV, 25-May-2019) (Revised by AV, 30-Jul-2019)

Ref Expression
Assertion ldepsnlinc ⊢ ∃ m ∈ LMod ∃ s ∈ 𝒫 Base m s linDepS m ∧ ∀ v ∈ s ∀ f ∈ Base Scalar ⁡ m s ∖ v finSupp 0 Scalar ⁡ m ⁡ f → f linC ⁡ m s ∖ v ≠ v

Proof

Step Hyp Ref Expression
1 eqid ⊢ ℤ ring freeLMod 0 1 = ℤ ring freeLMod 0 1
2 1 zlmodzxzlmod ⊢ ℤ ring freeLMod 0 1 ∈ LMod ∧ ℤ ring = Scalar ⁡ ℤ ring freeLMod 0 1
3 2 simpli ⊢ ℤ ring freeLMod 0 1 ∈ LMod
4 3z ⊢ 3 ∈ ℤ
5 6nn ⊢ 6 ∈ ℕ
6 5 nnzi ⊢ 6 ∈ ℤ
7 1 zlmodzxzel ⊢ 3 ∈ ℤ ∧ 6 ∈ ℤ → 0 3 1 6 ∈ Base ℤ ring freeLMod 0 1
8 4 6 7 mp2an ⊢ 0 3 1 6 ∈ Base ℤ ring freeLMod 0 1
9 2z ⊢ 2 ∈ ℤ
10 4z ⊢ 4 ∈ ℤ
11 1 zlmodzxzel ⊢ 2 ∈ ℤ ∧ 4 ∈ ℤ → 0 2 1 4 ∈ Base ℤ ring freeLMod 0 1
12 9 10 11 mp2an ⊢ 0 2 1 4 ∈ Base ℤ ring freeLMod 0 1
13 prelpwi ⊢ 0 3 1 6 ∈ Base ℤ ring freeLMod 0 1 ∧ 0 2 1 4 ∈ Base ℤ ring freeLMod 0 1 → 0 3 1 6 0 2 1 4 ∈ 𝒫 Base ℤ ring freeLMod 0 1
14 8 12 13 mp2an ⊢ 0 3 1 6 0 2 1 4 ∈ 𝒫 Base ℤ ring freeLMod 0 1
15 eqid ⊢ 0 3 1 6 = 0 3 1 6
16 eqid ⊢ 0 2 1 4 = 0 2 1 4
17 1 15 16 zlmodzxzldep ⊢ 0 3 1 6 0 2 1 4 linDepS ℤ ring freeLMod 0 1
18 1 15 16 ldepsnlinclem1 ⊢ f ∈ Base ℤ ring 0 2 1 4 → f linC ⁡ ℤ ring freeLMod 0 1 0 2 1 4 ≠ 0 3 1 6
19 simpr ⊢ ℤ ring freeLMod 0 1 ∈ LMod ∧ ℤ ring = Scalar ⁡ ℤ ring freeLMod 0 1 → ℤ ring = Scalar ⁡ ℤ ring freeLMod 0 1
20 19 eqcomd ⊢ ℤ ring freeLMod 0 1 ∈ LMod ∧ ℤ ring = Scalar ⁡ ℤ ring freeLMod 0 1 → Scalar ⁡ ℤ ring freeLMod 0 1 = ℤ ring
21 2 20 ax-mp ⊢ Scalar ⁡ ℤ ring freeLMod 0 1 = ℤ ring
22 21 fveq2i ⊢ Base Scalar ⁡ ℤ ring freeLMod 0 1 = Base ℤ ring
23 22 oveq1i ⊢ Base Scalar ⁡ ℤ ring freeLMod 0 1 0 2 1 4 = Base ℤ ring 0 2 1 4
24 18 23 eleq2s ⊢ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 0 2 1 4 → f linC ⁡ ℤ ring freeLMod 0 1 0 2 1 4 ≠ 0 3 1 6
25 24 a1d ⊢ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 0 2 1 4 → finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 0 2 1 4 ≠ 0 3 1 6
26 25 rgen ⊢ ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 0 2 1 4 finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 0 2 1 4 ≠ 0 3 1 6
27 1 15 16 ldepsnlinclem2 ⊢ f ∈ Base ℤ ring 0 3 1 6 → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 ≠ 0 2 1 4
28 22 oveq1i ⊢ Base Scalar ⁡ ℤ ring freeLMod 0 1 0 3 1 6 = Base ℤ ring 0 3 1 6
29 27 28 eleq2s ⊢ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 0 3 1 6 → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 ≠ 0 2 1 4
30 29 a1d ⊢ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 0 3 1 6 → finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 ≠ 0 2 1 4
31 30 rgen ⊢ ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 0 3 1 6 finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 ≠ 0 2 1 4
32 prex ⊢ 0 3 1 6 ∈ V
33 prex ⊢ 0 2 1 4 ∈ V
34 sneq ⊢ v = 0 3 1 6 → v = 0 3 1 6
35 34 difeq2d ⊢ v = 0 3 1 6 → 0 3 1 6 0 2 1 4 ∖ v = 0 3 1 6 0 2 1 4 ∖ 0 3 1 6
36 1 15 16 zlmodzxzldeplem ⊢ 0 3 1 6 ≠ 0 2 1 4
37 difprsn1 ⊢ 0 3 1 6 ≠ 0 2 1 4 → 0 3 1 6 0 2 1 4 ∖ 0 3 1 6 = 0 2 1 4
38 36 37 ax-mp ⊢ 0 3 1 6 0 2 1 4 ∖ 0 3 1 6 = 0 2 1 4
39 35 38 eqtrdi ⊢ v = 0 3 1 6 → 0 3 1 6 0 2 1 4 ∖ v = 0 2 1 4
40 39 oveq2d ⊢ v = 0 3 1 6 → Base Scalar ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v = Base Scalar ⁡ ℤ ring freeLMod 0 1 0 2 1 4
41 39 oveq2d ⊢ v = 0 3 1 6 → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v = f linC ⁡ ℤ ring freeLMod 0 1 0 2 1 4
42 id ⊢ v = 0 3 1 6 → v = 0 3 1 6
43 41 42 neeq12d ⊢ v = 0 3 1 6 → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v ≠ v ↔ f linC ⁡ ℤ ring freeLMod 0 1 0 2 1 4 ≠ 0 3 1 6
44 43 imbi2d ⊢ v = 0 3 1 6 → finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v ≠ v ↔ finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 0 2 1 4 ≠ 0 3 1 6
45 40 44 raleqbidv ⊢ v = 0 3 1 6 → ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v ≠ v ↔ ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 0 2 1 4 finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 0 2 1 4 ≠ 0 3 1 6
46 sneq ⊢ v = 0 2 1 4 → v = 0 2 1 4
47 46 difeq2d ⊢ v = 0 2 1 4 → 0 3 1 6 0 2 1 4 ∖ v = 0 3 1 6 0 2 1 4 ∖ 0 2 1 4
48 difprsn2 ⊢ 0 3 1 6 ≠ 0 2 1 4 → 0 3 1 6 0 2 1 4 ∖ 0 2 1 4 = 0 3 1 6
49 36 48 ax-mp ⊢ 0 3 1 6 0 2 1 4 ∖ 0 2 1 4 = 0 3 1 6
50 47 49 eqtrdi ⊢ v = 0 2 1 4 → 0 3 1 6 0 2 1 4 ∖ v = 0 3 1 6
51 50 oveq2d ⊢ v = 0 2 1 4 → Base Scalar ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v = Base Scalar ⁡ ℤ ring freeLMod 0 1 0 3 1 6
52 50 oveq2d ⊢ v = 0 2 1 4 → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v = f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6
53 id ⊢ v = 0 2 1 4 → v = 0 2 1 4
54 52 53 neeq12d ⊢ v = 0 2 1 4 → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v ≠ v ↔ f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 ≠ 0 2 1 4
55 54 imbi2d ⊢ v = 0 2 1 4 → finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v ≠ v ↔ finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 ≠ 0 2 1 4
56 51 55 raleqbidv ⊢ v = 0 2 1 4 → ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v ≠ v ↔ ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 0 3 1 6 finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 ≠ 0 2 1 4
57 32 33 45 56 ralpr ⊢ ∀ v ∈ 0 3 1 6 0 2 1 4 ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v ≠ v ↔ ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 0 2 1 4 finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 0 2 1 4 ≠ 0 3 1 6 ∧ ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 0 3 1 6 finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 ≠ 0 2 1 4
58 26 31 57 mpbir2an ⊢ ∀ v ∈ 0 3 1 6 0 2 1 4 ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v ≠ v
59 17 58 pm3.2i ⊢ 0 3 1 6 0 2 1 4 linDepS ℤ ring freeLMod 0 1 ∧ ∀ v ∈ 0 3 1 6 0 2 1 4 ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v ≠ v
60 breq1 ⊢ s = 0 3 1 6 0 2 1 4 → s linDepS ℤ ring freeLMod 0 1 ↔ 0 3 1 6 0 2 1 4 linDepS ℤ ring freeLMod 0 1
61 id ⊢ s = 0 3 1 6 0 2 1 4 → s = 0 3 1 6 0 2 1 4
62 difeq1 ⊢ s = 0 3 1 6 0 2 1 4 → s ∖ v = 0 3 1 6 0 2 1 4 ∖ v
63 62 oveq2d ⊢ s = 0 3 1 6 0 2 1 4 → Base Scalar ⁡ ℤ ring freeLMod 0 1 s ∖ v = Base Scalar ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v
64 62 oveq2d ⊢ s = 0 3 1 6 0 2 1 4 → f linC ⁡ ℤ ring freeLMod 0 1 s ∖ v = f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v
65 64 neeq1d ⊢ s = 0 3 1 6 0 2 1 4 → f linC ⁡ ℤ ring freeLMod 0 1 s ∖ v ≠ v ↔ f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v ≠ v
66 65 imbi2d ⊢ s = 0 3 1 6 0 2 1 4 → finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 s ∖ v ≠ v ↔ finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v ≠ v
67 63 66 raleqbidv ⊢ s = 0 3 1 6 0 2 1 4 → ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 s ∖ v finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 s ∖ v ≠ v ↔ ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v ≠ v
68 61 67 raleqbidv ⊢ s = 0 3 1 6 0 2 1 4 → ∀ v ∈ s ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 s ∖ v finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 s ∖ v ≠ v ↔ ∀ v ∈ 0 3 1 6 0 2 1 4 ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v ≠ v
69 60 68 anbi12d ⊢ s = 0 3 1 6 0 2 1 4 → s linDepS ℤ ring freeLMod 0 1 ∧ ∀ v ∈ s ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 s ∖ v finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 s ∖ v ≠ v ↔ 0 3 1 6 0 2 1 4 linDepS ℤ ring freeLMod 0 1 ∧ ∀ v ∈ 0 3 1 6 0 2 1 4 ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v ≠ v
70 69 rspcev ⊢ 0 3 1 6 0 2 1 4 ∈ 𝒫 Base ℤ ring freeLMod 0 1 ∧ 0 3 1 6 0 2 1 4 linDepS ℤ ring freeLMod 0 1 ∧ ∀ v ∈ 0 3 1 6 0 2 1 4 ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 0 3 1 6 0 2 1 4 ∖ v ≠ v → ∃ s ∈ 𝒫 Base ℤ ring freeLMod 0 1 s linDepS ℤ ring freeLMod 0 1 ∧ ∀ v ∈ s ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 s ∖ v finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 s ∖ v ≠ v
71 14 59 70 mp2an ⊢ ∃ s ∈ 𝒫 Base ℤ ring freeLMod 0 1 s linDepS ℤ ring freeLMod 0 1 ∧ ∀ v ∈ s ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 s ∖ v finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 s ∖ v ≠ v
72 fveq2 ⊢ m = ℤ ring freeLMod 0 1 → Base m = Base ℤ ring freeLMod 0 1
73 72 pweqd ⊢ m = ℤ ring freeLMod 0 1 → 𝒫 Base m = 𝒫 Base ℤ ring freeLMod 0 1
74 breq2 ⊢ m = ℤ ring freeLMod 0 1 → s linDepS m ↔ s linDepS ℤ ring freeLMod 0 1
75 2fveq3 ⊢ m = ℤ ring freeLMod 0 1 → Base Scalar ⁡ m = Base Scalar ⁡ ℤ ring freeLMod 0 1
76 75 oveq1d ⊢ m = ℤ ring freeLMod 0 1 → Base Scalar ⁡ m s ∖ v = Base Scalar ⁡ ℤ ring freeLMod 0 1 s ∖ v
77 2fveq3 ⊢ m = ℤ ring freeLMod 0 1 → 0 Scalar ⁡ m = 0 Scalar ⁡ ℤ ring freeLMod 0 1
78 77 breq2d ⊢ m = ℤ ring freeLMod 0 1 → finSupp 0 Scalar ⁡ m ⁡ f ↔ finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f
79 fveq2 ⊢ m = ℤ ring freeLMod 0 1 → linC ⁡ m = linC ⁡ ℤ ring freeLMod 0 1
80 79 oveqd ⊢ m = ℤ ring freeLMod 0 1 → f linC ⁡ m s ∖ v = f linC ⁡ ℤ ring freeLMod 0 1 s ∖ v
81 80 neeq1d ⊢ m = ℤ ring freeLMod 0 1 → f linC ⁡ m s ∖ v ≠ v ↔ f linC ⁡ ℤ ring freeLMod 0 1 s ∖ v ≠ v
82 78 81 imbi12d ⊢ m = ℤ ring freeLMod 0 1 → finSupp 0 Scalar ⁡ m ⁡ f → f linC ⁡ m s ∖ v ≠ v ↔ finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 s ∖ v ≠ v
83 76 82 raleqbidv ⊢ m = ℤ ring freeLMod 0 1 → ∀ f ∈ Base Scalar ⁡ m s ∖ v finSupp 0 Scalar ⁡ m ⁡ f → f linC ⁡ m s ∖ v ≠ v ↔ ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 s ∖ v finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 s ∖ v ≠ v
84 83 ralbidv ⊢ m = ℤ ring freeLMod 0 1 → ∀ v ∈ s ∀ f ∈ Base Scalar ⁡ m s ∖ v finSupp 0 Scalar ⁡ m ⁡ f → f linC ⁡ m s ∖ v ≠ v ↔ ∀ v ∈ s ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 s ∖ v finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 s ∖ v ≠ v
85 74 84 anbi12d ⊢ m = ℤ ring freeLMod 0 1 → s linDepS m ∧ ∀ v ∈ s ∀ f ∈ Base Scalar ⁡ m s ∖ v finSupp 0 Scalar ⁡ m ⁡ f → f linC ⁡ m s ∖ v ≠ v ↔ s linDepS ℤ ring freeLMod 0 1 ∧ ∀ v ∈ s ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 s ∖ v finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 s ∖ v ≠ v
86 73 85 rexeqbidv ⊢ m = ℤ ring freeLMod 0 1 → ∃ s ∈ 𝒫 Base m s linDepS m ∧ ∀ v ∈ s ∀ f ∈ Base Scalar ⁡ m s ∖ v finSupp 0 Scalar ⁡ m ⁡ f → f linC ⁡ m s ∖ v ≠ v ↔ ∃ s ∈ 𝒫 Base ℤ ring freeLMod 0 1 s linDepS ℤ ring freeLMod 0 1 ∧ ∀ v ∈ s ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 s ∖ v finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 s ∖ v ≠ v
87 86 rspcev ⊢ ℤ ring freeLMod 0 1 ∈ LMod ∧ ∃ s ∈ 𝒫 Base ℤ ring freeLMod 0 1 s linDepS ℤ ring freeLMod 0 1 ∧ ∀ v ∈ s ∀ f ∈ Base Scalar ⁡ ℤ ring freeLMod 0 1 s ∖ v finSupp 0 Scalar ⁡ ℤ ring freeLMod 0 1 ⁡ f → f linC ⁡ ℤ ring freeLMod 0 1 s ∖ v ≠ v → ∃ m ∈ LMod ∃ s ∈ 𝒫 Base m s linDepS m ∧ ∀ v ∈ s ∀ f ∈ Base Scalar ⁡ m s ∖ v finSupp 0 Scalar ⁡ m ⁡ f → f linC ⁡ m s ∖ v ≠ v
88 3 71 87 mp2an ⊢ ∃ m ∈ LMod ∃ s ∈ 𝒫 Base m s linDepS m ∧ ∀ v ∈ s ∀ f ∈ Base Scalar ⁡ m s ∖ v finSupp 0 Scalar ⁡ m ⁡ f → f linC ⁡ m s ∖ v ≠ v