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Mirrors > Home > MPE Home > Th. List > df-isom | Structured version Visualization version GIF version |
Description: Define the isomorphism predicate. We read this as "𝐻 is an 𝑅, 𝑆 isomorphism of 𝐴 onto 𝐵". Normally, 𝑅 and 𝑆 are ordering relations on 𝐴 and 𝐵 respectively. Definition 6.28 of [TakeutiZaring] p. 32, whose notation is the same as ours except that 𝑅 and 𝑆 are subscripts. (Contributed by NM, 4-Mar-1997.) |
Ref | Expression |
---|---|
df-isom | ⊢ (𝐻 Isom 𝑅, 𝑆 (𝐴, 𝐵) ↔ (𝐻:𝐴–1-1-onto→𝐵 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 (𝑥𝑅𝑦 ↔ (𝐻‘𝑥)𝑆(𝐻‘𝑦)))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cA | . . 3 class 𝐴 | |
2 | cB | . . 3 class 𝐵 | |
3 | cR | . . 3 class 𝑅 | |
4 | cS | . . 3 class 𝑆 | |
5 | cH | . . 3 class 𝐻 | |
6 | 1, 2, 3, 4, 5 | wiso 6359 | . 2 wff 𝐻 Isom 𝑅, 𝑆 (𝐴, 𝐵) |
7 | 1, 2, 5 | wf1o 6357 | . . 3 wff 𝐻:𝐴–1-1-onto→𝐵 |
8 | vx | . . . . . . . 8 setvar 𝑥 | |
9 | 8 | cv 1542 | . . . . . . 7 class 𝑥 |
10 | vy | . . . . . . . 8 setvar 𝑦 | |
11 | 10 | cv 1542 | . . . . . . 7 class 𝑦 |
12 | 9, 11, 3 | wbr 5039 | . . . . . 6 wff 𝑥𝑅𝑦 |
13 | 9, 5 | cfv 6358 | . . . . . . 7 class (𝐻‘𝑥) |
14 | 11, 5 | cfv 6358 | . . . . . . 7 class (𝐻‘𝑦) |
15 | 13, 14, 4 | wbr 5039 | . . . . . 6 wff (𝐻‘𝑥)𝑆(𝐻‘𝑦) |
16 | 12, 15 | wb 209 | . . . . 5 wff (𝑥𝑅𝑦 ↔ (𝐻‘𝑥)𝑆(𝐻‘𝑦)) |
17 | 16, 10, 1 | wral 3051 | . . . 4 wff ∀𝑦 ∈ 𝐴 (𝑥𝑅𝑦 ↔ (𝐻‘𝑥)𝑆(𝐻‘𝑦)) |
18 | 17, 8, 1 | wral 3051 | . . 3 wff ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 (𝑥𝑅𝑦 ↔ (𝐻‘𝑥)𝑆(𝐻‘𝑦)) |
19 | 7, 18 | wa 399 | . 2 wff (𝐻:𝐴–1-1-onto→𝐵 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 (𝑥𝑅𝑦 ↔ (𝐻‘𝑥)𝑆(𝐻‘𝑦))) |
20 | 6, 19 | wb 209 | 1 wff (𝐻 Isom 𝑅, 𝑆 (𝐴, 𝐵) ↔ (𝐻:𝐴–1-1-onto→𝐵 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 (𝑥𝑅𝑦 ↔ (𝐻‘𝑥)𝑆(𝐻‘𝑦)))) |
Colors of variables: wff setvar class |
This definition is referenced by: isoeq1 7104 isoeq2 7105 isoeq3 7106 isoeq4 7107 isoeq5 7108 nfiso 7109 isof1o 7110 isof1oidb 7111 isof1oopb 7112 isorel 7113 soisores 7114 soisoi 7115 isoid 7116 isocnv 7117 isocnv2 7118 isocnv3 7119 isores2 7120 isores3 7122 isotr 7123 isoini2 7126 f1oiso 7138 f1owe 7140 smoiso2 8084 alephiso 9677 compssiso 9953 negiso 11777 om2uzisoi 13492 icopnfhmeo 23794 reefiso 25294 logltb 25442 isoun 30708 mgcf1o 30954 xrmulc1cn 31548 sticksstones3 39773 wepwsolem 40511 alephiso2 40782 iso0 41539 fourierdlem54 43319 rrx2plordisom 45685 |
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