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Description: The class of all uniform structures for a base X . (Contributed by Thierry Arnoux, 15-Nov-2017) (Revised by AV, 17-Sep-2021)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | ustval | ⊢ ( 𝑋 ∈ 𝑉 → ( UnifOn ‘ 𝑋 ) = { 𝑢 ∣ ( 𝑢 ⊆ 𝒫 ( 𝑋 × 𝑋 ) ∧ ( 𝑋 × 𝑋 ) ∈ 𝑢 ∧ ∀ 𝑣 ∈ 𝑢 ( ∀ 𝑤 ∈ 𝒫 ( 𝑋 × 𝑋 ) ( 𝑣 ⊆ 𝑤 → 𝑤 ∈ 𝑢 ) ∧ ∀ 𝑤 ∈ 𝑢 ( 𝑣 ∩ 𝑤 ) ∈ 𝑢 ∧ ( ( I ↾ 𝑋 ) ⊆ 𝑣 ∧ ◡ 𝑣 ∈ 𝑢 ∧ ∃ 𝑤 ∈ 𝑢 ( 𝑤 ∘ 𝑤 ) ⊆ 𝑣 ) ) ) } ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-ust | ⊢ UnifOn = ( 𝑥 ∈ V ↦ { 𝑢 ∣ ( 𝑢 ⊆ 𝒫 ( 𝑥 × 𝑥 ) ∧ ( 𝑥 × 𝑥 ) ∈ 𝑢 ∧ ∀ 𝑣 ∈ 𝑢 ( ∀ 𝑤 ∈ 𝒫 ( 𝑥 × 𝑥 ) ( 𝑣 ⊆ 𝑤 → 𝑤 ∈ 𝑢 ) ∧ ∀ 𝑤 ∈ 𝑢 ( 𝑣 ∩ 𝑤 ) ∈ 𝑢 ∧ ( ( I ↾ 𝑥 ) ⊆ 𝑣 ∧ ◡ 𝑣 ∈ 𝑢 ∧ ∃ 𝑤 ∈ 𝑢 ( 𝑤 ∘ 𝑤 ) ⊆ 𝑣 ) ) ) } ) | |
| 2 | id | ⊢ ( 𝑥 = 𝑋 → 𝑥 = 𝑋 ) | |
| 3 | 2 | sqxpeqd | ⊢ ( 𝑥 = 𝑋 → ( 𝑥 × 𝑥 ) = ( 𝑋 × 𝑋 ) ) |
| 4 | 3 | pweqd | ⊢ ( 𝑥 = 𝑋 → 𝒫 ( 𝑥 × 𝑥 ) = 𝒫 ( 𝑋 × 𝑋 ) ) |
| 5 | 4 | sseq2d | ⊢ ( 𝑥 = 𝑋 → ( 𝑢 ⊆ 𝒫 ( 𝑥 × 𝑥 ) ↔ 𝑢 ⊆ 𝒫 ( 𝑋 × 𝑋 ) ) ) |
| 6 | 3 | eleq1d | ⊢ ( 𝑥 = 𝑋 → ( ( 𝑥 × 𝑥 ) ∈ 𝑢 ↔ ( 𝑋 × 𝑋 ) ∈ 𝑢 ) ) |
| 7 | 4 | raleqdv | ⊢ ( 𝑥 = 𝑋 → ( ∀ 𝑤 ∈ 𝒫 ( 𝑥 × 𝑥 ) ( 𝑣 ⊆ 𝑤 → 𝑤 ∈ 𝑢 ) ↔ ∀ 𝑤 ∈ 𝒫 ( 𝑋 × 𝑋 ) ( 𝑣 ⊆ 𝑤 → 𝑤 ∈ 𝑢 ) ) ) |
| 8 | reseq2 | ⊢ ( 𝑥 = 𝑋 → ( I ↾ 𝑥 ) = ( I ↾ 𝑋 ) ) | |
| 9 | 8 | sseq1d | ⊢ ( 𝑥 = 𝑋 → ( ( I ↾ 𝑥 ) ⊆ 𝑣 ↔ ( I ↾ 𝑋 ) ⊆ 𝑣 ) ) |
| 10 | 9 | 3anbi1d | ⊢ ( 𝑥 = 𝑋 → ( ( ( I ↾ 𝑥 ) ⊆ 𝑣 ∧ ◡ 𝑣 ∈ 𝑢 ∧ ∃ 𝑤 ∈ 𝑢 ( 𝑤 ∘ 𝑤 ) ⊆ 𝑣 ) ↔ ( ( I ↾ 𝑋 ) ⊆ 𝑣 ∧ ◡ 𝑣 ∈ 𝑢 ∧ ∃ 𝑤 ∈ 𝑢 ( 𝑤 ∘ 𝑤 ) ⊆ 𝑣 ) ) ) |
| 11 | 7 10 | 3anbi13d | ⊢ ( 𝑥 = 𝑋 → ( ( ∀ 𝑤 ∈ 𝒫 ( 𝑥 × 𝑥 ) ( 𝑣 ⊆ 𝑤 → 𝑤 ∈ 𝑢 ) ∧ ∀ 𝑤 ∈ 𝑢 ( 𝑣 ∩ 𝑤 ) ∈ 𝑢 ∧ ( ( I ↾ 𝑥 ) ⊆ 𝑣 ∧ ◡ 𝑣 ∈ 𝑢 ∧ ∃ 𝑤 ∈ 𝑢 ( 𝑤 ∘ 𝑤 ) ⊆ 𝑣 ) ) ↔ ( ∀ 𝑤 ∈ 𝒫 ( 𝑋 × 𝑋 ) ( 𝑣 ⊆ 𝑤 → 𝑤 ∈ 𝑢 ) ∧ ∀ 𝑤 ∈ 𝑢 ( 𝑣 ∩ 𝑤 ) ∈ 𝑢 ∧ ( ( I ↾ 𝑋 ) ⊆ 𝑣 ∧ ◡ 𝑣 ∈ 𝑢 ∧ ∃ 𝑤 ∈ 𝑢 ( 𝑤 ∘ 𝑤 ) ⊆ 𝑣 ) ) ) ) |
| 12 | 11 | ralbidv | ⊢ ( 𝑥 = 𝑋 → ( ∀ 𝑣 ∈ 𝑢 ( ∀ 𝑤 ∈ 𝒫 ( 𝑥 × 𝑥 ) ( 𝑣 ⊆ 𝑤 → 𝑤 ∈ 𝑢 ) ∧ ∀ 𝑤 ∈ 𝑢 ( 𝑣 ∩ 𝑤 ) ∈ 𝑢 ∧ ( ( I ↾ 𝑥 ) ⊆ 𝑣 ∧ ◡ 𝑣 ∈ 𝑢 ∧ ∃ 𝑤 ∈ 𝑢 ( 𝑤 ∘ 𝑤 ) ⊆ 𝑣 ) ) ↔ ∀ 𝑣 ∈ 𝑢 ( ∀ 𝑤 ∈ 𝒫 ( 𝑋 × 𝑋 ) ( 𝑣 ⊆ 𝑤 → 𝑤 ∈ 𝑢 ) ∧ ∀ 𝑤 ∈ 𝑢 ( 𝑣 ∩ 𝑤 ) ∈ 𝑢 ∧ ( ( I ↾ 𝑋 ) ⊆ 𝑣 ∧ ◡ 𝑣 ∈ 𝑢 ∧ ∃ 𝑤 ∈ 𝑢 ( 𝑤 ∘ 𝑤 ) ⊆ 𝑣 ) ) ) ) |
| 13 | 5 6 12 | 3anbi123d | ⊢ ( 𝑥 = 𝑋 → ( ( 𝑢 ⊆ 𝒫 ( 𝑥 × 𝑥 ) ∧ ( 𝑥 × 𝑥 ) ∈ 𝑢 ∧ ∀ 𝑣 ∈ 𝑢 ( ∀ 𝑤 ∈ 𝒫 ( 𝑥 × 𝑥 ) ( 𝑣 ⊆ 𝑤 → 𝑤 ∈ 𝑢 ) ∧ ∀ 𝑤 ∈ 𝑢 ( 𝑣 ∩ 𝑤 ) ∈ 𝑢 ∧ ( ( I ↾ 𝑥 ) ⊆ 𝑣 ∧ ◡ 𝑣 ∈ 𝑢 ∧ ∃ 𝑤 ∈ 𝑢 ( 𝑤 ∘ 𝑤 ) ⊆ 𝑣 ) ) ) ↔ ( 𝑢 ⊆ 𝒫 ( 𝑋 × 𝑋 ) ∧ ( 𝑋 × 𝑋 ) ∈ 𝑢 ∧ ∀ 𝑣 ∈ 𝑢 ( ∀ 𝑤 ∈ 𝒫 ( 𝑋 × 𝑋 ) ( 𝑣 ⊆ 𝑤 → 𝑤 ∈ 𝑢 ) ∧ ∀ 𝑤 ∈ 𝑢 ( 𝑣 ∩ 𝑤 ) ∈ 𝑢 ∧ ( ( I ↾ 𝑋 ) ⊆ 𝑣 ∧ ◡ 𝑣 ∈ 𝑢 ∧ ∃ 𝑤 ∈ 𝑢 ( 𝑤 ∘ 𝑤 ) ⊆ 𝑣 ) ) ) ) ) |
| 14 | 13 | abbidv | ⊢ ( 𝑥 = 𝑋 → { 𝑢 ∣ ( 𝑢 ⊆ 𝒫 ( 𝑥 × 𝑥 ) ∧ ( 𝑥 × 𝑥 ) ∈ 𝑢 ∧ ∀ 𝑣 ∈ 𝑢 ( ∀ 𝑤 ∈ 𝒫 ( 𝑥 × 𝑥 ) ( 𝑣 ⊆ 𝑤 → 𝑤 ∈ 𝑢 ) ∧ ∀ 𝑤 ∈ 𝑢 ( 𝑣 ∩ 𝑤 ) ∈ 𝑢 ∧ ( ( I ↾ 𝑥 ) ⊆ 𝑣 ∧ ◡ 𝑣 ∈ 𝑢 ∧ ∃ 𝑤 ∈ 𝑢 ( 𝑤 ∘ 𝑤 ) ⊆ 𝑣 ) ) ) } = { 𝑢 ∣ ( 𝑢 ⊆ 𝒫 ( 𝑋 × 𝑋 ) ∧ ( 𝑋 × 𝑋 ) ∈ 𝑢 ∧ ∀ 𝑣 ∈ 𝑢 ( ∀ 𝑤 ∈ 𝒫 ( 𝑋 × 𝑋 ) ( 𝑣 ⊆ 𝑤 → 𝑤 ∈ 𝑢 ) ∧ ∀ 𝑤 ∈ 𝑢 ( 𝑣 ∩ 𝑤 ) ∈ 𝑢 ∧ ( ( I ↾ 𝑋 ) ⊆ 𝑣 ∧ ◡ 𝑣 ∈ 𝑢 ∧ ∃ 𝑤 ∈ 𝑢 ( 𝑤 ∘ 𝑤 ) ⊆ 𝑣 ) ) ) } ) |
| 15 | elex | ⊢ ( 𝑋 ∈ 𝑉 → 𝑋 ∈ V ) | |
| 16 | simp1 | ⊢ ( ( 𝑢 ⊆ 𝒫 ( 𝑋 × 𝑋 ) ∧ ( 𝑋 × 𝑋 ) ∈ 𝑢 ∧ ∀ 𝑣 ∈ 𝑢 ( ∀ 𝑤 ∈ 𝒫 ( 𝑋 × 𝑋 ) ( 𝑣 ⊆ 𝑤 → 𝑤 ∈ 𝑢 ) ∧ ∀ 𝑤 ∈ 𝑢 ( 𝑣 ∩ 𝑤 ) ∈ 𝑢 ∧ ( ( I ↾ 𝑋 ) ⊆ 𝑣 ∧ ◡ 𝑣 ∈ 𝑢 ∧ ∃ 𝑤 ∈ 𝑢 ( 𝑤 ∘ 𝑤 ) ⊆ 𝑣 ) ) ) → 𝑢 ⊆ 𝒫 ( 𝑋 × 𝑋 ) ) | |
| 17 | 16 | ss2abi | ⊢ { 𝑢 ∣ ( 𝑢 ⊆ 𝒫 ( 𝑋 × 𝑋 ) ∧ ( 𝑋 × 𝑋 ) ∈ 𝑢 ∧ ∀ 𝑣 ∈ 𝑢 ( ∀ 𝑤 ∈ 𝒫 ( 𝑋 × 𝑋 ) ( 𝑣 ⊆ 𝑤 → 𝑤 ∈ 𝑢 ) ∧ ∀ 𝑤 ∈ 𝑢 ( 𝑣 ∩ 𝑤 ) ∈ 𝑢 ∧ ( ( I ↾ 𝑋 ) ⊆ 𝑣 ∧ ◡ 𝑣 ∈ 𝑢 ∧ ∃ 𝑤 ∈ 𝑢 ( 𝑤 ∘ 𝑤 ) ⊆ 𝑣 ) ) ) } ⊆ { 𝑢 ∣ 𝑢 ⊆ 𝒫 ( 𝑋 × 𝑋 ) } |
| 18 | df-pw | ⊢ 𝒫 𝒫 ( 𝑋 × 𝑋 ) = { 𝑢 ∣ 𝑢 ⊆ 𝒫 ( 𝑋 × 𝑋 ) } | |
| 19 | 17 18 | sseqtrri | ⊢ { 𝑢 ∣ ( 𝑢 ⊆ 𝒫 ( 𝑋 × 𝑋 ) ∧ ( 𝑋 × 𝑋 ) ∈ 𝑢 ∧ ∀ 𝑣 ∈ 𝑢 ( ∀ 𝑤 ∈ 𝒫 ( 𝑋 × 𝑋 ) ( 𝑣 ⊆ 𝑤 → 𝑤 ∈ 𝑢 ) ∧ ∀ 𝑤 ∈ 𝑢 ( 𝑣 ∩ 𝑤 ) ∈ 𝑢 ∧ ( ( I ↾ 𝑋 ) ⊆ 𝑣 ∧ ◡ 𝑣 ∈ 𝑢 ∧ ∃ 𝑤 ∈ 𝑢 ( 𝑤 ∘ 𝑤 ) ⊆ 𝑣 ) ) ) } ⊆ 𝒫 𝒫 ( 𝑋 × 𝑋 ) |
| 20 | sqxpexg | ⊢ ( 𝑋 ∈ 𝑉 → ( 𝑋 × 𝑋 ) ∈ V ) | |
| 21 | pwexg | ⊢ ( ( 𝑋 × 𝑋 ) ∈ V → 𝒫 ( 𝑋 × 𝑋 ) ∈ V ) | |
| 22 | pwexg | ⊢ ( 𝒫 ( 𝑋 × 𝑋 ) ∈ V → 𝒫 𝒫 ( 𝑋 × 𝑋 ) ∈ V ) | |
| 23 | 20 21 22 | 3syl | ⊢ ( 𝑋 ∈ 𝑉 → 𝒫 𝒫 ( 𝑋 × 𝑋 ) ∈ V ) |
| 24 | ssexg | ⊢ ( ( { 𝑢 ∣ ( 𝑢 ⊆ 𝒫 ( 𝑋 × 𝑋 ) ∧ ( 𝑋 × 𝑋 ) ∈ 𝑢 ∧ ∀ 𝑣 ∈ 𝑢 ( ∀ 𝑤 ∈ 𝒫 ( 𝑋 × 𝑋 ) ( 𝑣 ⊆ 𝑤 → 𝑤 ∈ 𝑢 ) ∧ ∀ 𝑤 ∈ 𝑢 ( 𝑣 ∩ 𝑤 ) ∈ 𝑢 ∧ ( ( I ↾ 𝑋 ) ⊆ 𝑣 ∧ ◡ 𝑣 ∈ 𝑢 ∧ ∃ 𝑤 ∈ 𝑢 ( 𝑤 ∘ 𝑤 ) ⊆ 𝑣 ) ) ) } ⊆ 𝒫 𝒫 ( 𝑋 × 𝑋 ) ∧ 𝒫 𝒫 ( 𝑋 × 𝑋 ) ∈ V ) → { 𝑢 ∣ ( 𝑢 ⊆ 𝒫 ( 𝑋 × 𝑋 ) ∧ ( 𝑋 × 𝑋 ) ∈ 𝑢 ∧ ∀ 𝑣 ∈ 𝑢 ( ∀ 𝑤 ∈ 𝒫 ( 𝑋 × 𝑋 ) ( 𝑣 ⊆ 𝑤 → 𝑤 ∈ 𝑢 ) ∧ ∀ 𝑤 ∈ 𝑢 ( 𝑣 ∩ 𝑤 ) ∈ 𝑢 ∧ ( ( I ↾ 𝑋 ) ⊆ 𝑣 ∧ ◡ 𝑣 ∈ 𝑢 ∧ ∃ 𝑤 ∈ 𝑢 ( 𝑤 ∘ 𝑤 ) ⊆ 𝑣 ) ) ) } ∈ V ) | |
| 25 | 19 23 24 | sylancr | ⊢ ( 𝑋 ∈ 𝑉 → { 𝑢 ∣ ( 𝑢 ⊆ 𝒫 ( 𝑋 × 𝑋 ) ∧ ( 𝑋 × 𝑋 ) ∈ 𝑢 ∧ ∀ 𝑣 ∈ 𝑢 ( ∀ 𝑤 ∈ 𝒫 ( 𝑋 × 𝑋 ) ( 𝑣 ⊆ 𝑤 → 𝑤 ∈ 𝑢 ) ∧ ∀ 𝑤 ∈ 𝑢 ( 𝑣 ∩ 𝑤 ) ∈ 𝑢 ∧ ( ( I ↾ 𝑋 ) ⊆ 𝑣 ∧ ◡ 𝑣 ∈ 𝑢 ∧ ∃ 𝑤 ∈ 𝑢 ( 𝑤 ∘ 𝑤 ) ⊆ 𝑣 ) ) ) } ∈ V ) |
| 26 | 1 14 15 25 | fvmptd3 | ⊢ ( 𝑋 ∈ 𝑉 → ( UnifOn ‘ 𝑋 ) = { 𝑢 ∣ ( 𝑢 ⊆ 𝒫 ( 𝑋 × 𝑋 ) ∧ ( 𝑋 × 𝑋 ) ∈ 𝑢 ∧ ∀ 𝑣 ∈ 𝑢 ( ∀ 𝑤 ∈ 𝒫 ( 𝑋 × 𝑋 ) ( 𝑣 ⊆ 𝑤 → 𝑤 ∈ 𝑢 ) ∧ ∀ 𝑤 ∈ 𝑢 ( 𝑣 ∩ 𝑤 ) ∈ 𝑢 ∧ ( ( I ↾ 𝑋 ) ⊆ 𝑣 ∧ ◡ 𝑣 ∈ 𝑢 ∧ ∃ 𝑤 ∈ 𝑢 ( 𝑤 ∘ 𝑤 ) ⊆ 𝑣 ) ) ) } ) |