Step | Hyp | Ref
| Expression |
1 | | prhash2ex 14095 |
. 2
⊢
(♯‘{0, 1}) = 2 |
2 | | c0ex 10953 |
. . . . 5
⊢ 0 ∈
V |
3 | | 1ex 10955 |
. . . . 5
⊢ 1 ∈
V |
4 | 2, 3 | pm3.2i 470 |
. . . 4
⊢ (0 ∈
V ∧ 1 ∈ V) |
5 | | eqid 2739 |
. . . . 5
⊢ {0, 1} =
{0, 1} |
6 | | prex 5358 |
. . . . . . 7
⊢ {0, 1}
∈ V |
7 | | eqeq1 2743 |
. . . . . . . . . . . . 13
⊢ (𝑥 = 𝑢 → (𝑥 = 0 ↔ 𝑢 = 0)) |
8 | 7 | anbi1d 629 |
. . . . . . . . . . . 12
⊢ (𝑥 = 𝑢 → ((𝑥 = 0 ∧ 𝑦 = 0) ↔ (𝑢 = 0 ∧ 𝑦 = 0))) |
9 | 8 | ifbid 4487 |
. . . . . . . . . . 11
⊢ (𝑥 = 𝑢 → if((𝑥 = 0 ∧ 𝑦 = 0), 1, 0) = if((𝑢 = 0 ∧ 𝑦 = 0), 1, 0)) |
10 | | eqeq1 2743 |
. . . . . . . . . . . . 13
⊢ (𝑦 = 𝑣 → (𝑦 = 0 ↔ 𝑣 = 0)) |
11 | 10 | anbi2d 628 |
. . . . . . . . . . . 12
⊢ (𝑦 = 𝑣 → ((𝑢 = 0 ∧ 𝑦 = 0) ↔ (𝑢 = 0 ∧ 𝑣 = 0))) |
12 | 11 | ifbid 4487 |
. . . . . . . . . . 11
⊢ (𝑦 = 𝑣 → if((𝑢 = 0 ∧ 𝑦 = 0), 1, 0) = if((𝑢 = 0 ∧ 𝑣 = 0), 1, 0)) |
13 | 9, 12 | cbvmpov 7361 |
. . . . . . . . . 10
⊢ (𝑥 ∈ {0, 1}, 𝑦 ∈ {0, 1} ↦ if((𝑥 = 0 ∧ 𝑦 = 0), 1, 0)) = (𝑢 ∈ {0, 1}, 𝑣 ∈ {0, 1} ↦ if((𝑢 = 0 ∧ 𝑣 = 0), 1, 0)) |
14 | 13 | opeq2i 4813 |
. . . . . . . . 9
⊢
〈(+g‘ndx), (𝑥 ∈ {0, 1}, 𝑦 ∈ {0, 1} ↦ if((𝑥 = 0 ∧ 𝑦 = 0), 1, 0))〉 =
〈(+g‘ndx), (𝑢 ∈ {0, 1}, 𝑣 ∈ {0, 1} ↦ if((𝑢 = 0 ∧ 𝑣 = 0), 1, 0))〉 |
15 | 14 | preq2i 4678 |
. . . . . . . 8
⊢
{〈(Base‘ndx), {0, 1}〉, 〈(+g‘ndx),
(𝑥 ∈ {0, 1}, 𝑦 ∈ {0, 1} ↦ if((𝑥 = 0 ∧ 𝑦 = 0), 1, 0))〉} =
{〈(Base‘ndx), {0, 1}〉, 〈(+g‘ndx), (𝑢 ∈ {0, 1}, 𝑣 ∈ {0, 1} ↦ if((𝑢 = 0 ∧ 𝑣 = 0), 1, 0))〉} |
16 | 15 | grpbase 16977 |
. . . . . . 7
⊢ ({0, 1}
∈ V → {0, 1} = (Base‘{〈(Base‘ndx), {0, 1}〉,
〈(+g‘ndx), (𝑥 ∈ {0, 1}, 𝑦 ∈ {0, 1} ↦ if((𝑥 = 0 ∧ 𝑦 = 0), 1, 0))〉})) |
17 | 6, 16 | ax-mp 5 |
. . . . . 6
⊢ {0, 1} =
(Base‘{〈(Base‘ndx), {0, 1}〉,
〈(+g‘ndx), (𝑥 ∈ {0, 1}, 𝑦 ∈ {0, 1} ↦ if((𝑥 = 0 ∧ 𝑦 = 0), 1, 0))〉}) |
18 | 17 | eqcomi 2748 |
. . . . 5
⊢
(Base‘{〈(Base‘ndx), {0, 1}〉,
〈(+g‘ndx), (𝑥 ∈ {0, 1}, 𝑦 ∈ {0, 1} ↦ if((𝑥 = 0 ∧ 𝑦 = 0), 1, 0))〉}) = {0,
1} |
19 | 6, 6 | mpoex 7906 |
. . . . . . 7
⊢ (𝑢 ∈ {0, 1}, 𝑣 ∈ {0, 1} ↦ if((𝑢 = 0 ∧ 𝑣 = 0), 1, 0)) ∈ V |
20 | 15 | grpplusg 16979 |
. . . . . . 7
⊢ ((𝑢 ∈ {0, 1}, 𝑣 ∈ {0, 1} ↦ if((𝑢 = 0 ∧ 𝑣 = 0), 1, 0)) ∈ V → (𝑢 ∈ {0, 1}, 𝑣 ∈ {0, 1} ↦ if((𝑢 = 0 ∧ 𝑣 = 0), 1, 0)) =
(+g‘{〈(Base‘ndx), {0, 1}〉,
〈(+g‘ndx), (𝑥 ∈ {0, 1}, 𝑦 ∈ {0, 1} ↦ if((𝑥 = 0 ∧ 𝑦 = 0), 1, 0))〉})) |
21 | 19, 20 | ax-mp 5 |
. . . . . 6
⊢ (𝑢 ∈ {0, 1}, 𝑣 ∈ {0, 1} ↦ if((𝑢 = 0 ∧ 𝑣 = 0), 1, 0)) =
(+g‘{〈(Base‘ndx), {0, 1}〉,
〈(+g‘ndx), (𝑥 ∈ {0, 1}, 𝑦 ∈ {0, 1} ↦ if((𝑥 = 0 ∧ 𝑦 = 0), 1, 0))〉}) |
22 | 21 | eqcomi 2748 |
. . . . 5
⊢
(+g‘{〈(Base‘ndx), {0, 1}〉,
〈(+g‘ndx), (𝑥 ∈ {0, 1}, 𝑦 ∈ {0, 1} ↦ if((𝑥 = 0 ∧ 𝑦 = 0), 1, 0))〉}) = (𝑢 ∈ {0, 1}, 𝑣 ∈ {0, 1} ↦ if((𝑢 = 0 ∧ 𝑣 = 0), 1, 0)) |
23 | 5, 18, 22 | mgm2nsgrplem1 18538 |
. . . 4
⊢ ((0
∈ V ∧ 1 ∈ V) → {〈(Base‘ndx), {0, 1}〉,
〈(+g‘ndx), (𝑥 ∈ {0, 1}, 𝑦 ∈ {0, 1} ↦ if((𝑥 = 0 ∧ 𝑦 = 0), 1, 0))〉} ∈
Mgm) |
24 | 4, 23 | mp1i 13 |
. . 3
⊢
((♯‘{0, 1}) = 2 → {〈(Base‘ndx), {0,
1}〉, 〈(+g‘ndx), (𝑥 ∈ {0, 1}, 𝑦 ∈ {0, 1} ↦ if((𝑥 = 0 ∧ 𝑦 = 0), 1, 0))〉} ∈
Mgm) |
25 | | neleq1 3055 |
. . . 4
⊢ (𝑚 = {〈(Base‘ndx), {0,
1}〉, 〈(+g‘ndx), (𝑥 ∈ {0, 1}, 𝑦 ∈ {0, 1} ↦ if((𝑥 = 0 ∧ 𝑦 = 0), 1, 0))〉} → (𝑚 ∉ Smgrp ↔
{〈(Base‘ndx), {0, 1}〉, 〈(+g‘ndx), (𝑥 ∈ {0, 1}, 𝑦 ∈ {0, 1} ↦ if((𝑥 = 0 ∧ 𝑦 = 0), 1, 0))〉} ∉
Smgrp)) |
26 | 25 | adantl 481 |
. . 3
⊢
(((♯‘{0, 1}) = 2 ∧ 𝑚 = {〈(Base‘ndx), {0, 1}〉,
〈(+g‘ndx), (𝑥 ∈ {0, 1}, 𝑦 ∈ {0, 1} ↦ if((𝑥 = 0 ∧ 𝑦 = 0), 1, 0))〉}) → (𝑚 ∉ Smgrp ↔
{〈(Base‘ndx), {0, 1}〉, 〈(+g‘ndx), (𝑥 ∈ {0, 1}, 𝑦 ∈ {0, 1} ↦ if((𝑥 = 0 ∧ 𝑦 = 0), 1, 0))〉} ∉
Smgrp)) |
27 | 5, 18, 22 | mgm2nsgrplem4 18541 |
. . 3
⊢
((♯‘{0, 1}) = 2 → {〈(Base‘ndx), {0,
1}〉, 〈(+g‘ndx), (𝑥 ∈ {0, 1}, 𝑦 ∈ {0, 1} ↦ if((𝑥 = 0 ∧ 𝑦 = 0), 1, 0))〉} ∉
Smgrp) |
28 | 24, 26, 27 | rspcedvd 3563 |
. 2
⊢
((♯‘{0, 1}) = 2 → ∃𝑚 ∈ Mgm 𝑚 ∉ Smgrp) |
29 | 1, 28 | ax-mp 5 |
1
⊢
∃𝑚 ∈ Mgm
𝑚 ∉
Smgrp |