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| Mirrors > Home > MPE Home > Th. List > Mathboxes > tposres2 | Structured version Visualization version GIF version | ||
| Description: The transposition restricted to a set. (Contributed by Zhi Wang, 6-Oct-2025.) |
| Ref | Expression |
|---|---|
| tposres2.1 | ⊢ (𝜑 → ¬ ∅ ∈ (dom 𝐹 ∩ 𝑅)) |
| Ref | Expression |
|---|---|
| tposres2 | ⊢ (𝜑 → (tpos 𝐹 ↾ 𝑅) = (tpos 𝐹 ↾ ◡◡𝑅)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | tposresg 49713 | . . 3 ⊢ (tpos 𝐹 ↾ 𝑅) = ((tpos 𝐹 ↾ ◡◡𝑅) ∪ (𝐹 ↾ (𝑅 ∩ {∅}))) | |
| 2 | tposres2.1 | . . . . 5 ⊢ (𝜑 → ¬ ∅ ∈ (dom 𝐹 ∩ 𝑅)) | |
| 3 | resinsn 49707 | . . . . 5 ⊢ ((𝐹 ↾ (𝑅 ∩ {∅})) = ∅ ↔ ¬ ∅ ∈ (dom 𝐹 ∩ 𝑅)) | |
| 4 | 2, 3 | sylibr 237 | . . . 4 ⊢ (𝜑 → (𝐹 ↾ (𝑅 ∩ {∅})) = ∅) |
| 5 | 4 | uneq2d 4122 | . . 3 ⊢ (𝜑 → ((tpos 𝐹 ↾ ◡◡𝑅) ∪ (𝐹 ↾ (𝑅 ∩ {∅}))) = ((tpos 𝐹 ↾ ◡◡𝑅) ∪ ∅)) |
| 6 | 1, 5 | eqtrid 2812 | . 2 ⊢ (𝜑 → (tpos 𝐹 ↾ 𝑅) = ((tpos 𝐹 ↾ ◡◡𝑅) ∪ ∅)) |
| 7 | un0 4351 | . 2 ⊢ ((tpos 𝐹 ↾ ◡◡𝑅) ∪ ∅) = (tpos 𝐹 ↾ ◡◡𝑅) | |
| 8 | 6, 7 | eqtrdi 2816 | 1 ⊢ (𝜑 → (tpos 𝐹 ↾ 𝑅) = (tpos 𝐹 ↾ ◡◡𝑅)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 = wceq 1570 ∈ wcel 2146 ∪ cun 3904 ∩ cin 3905 ∅c0 4286 {csn 4591 ◡ccnv 5662 dom cdm 5663 ↾ cres 5665 tpos ctpos 8227 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7742 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3082 df-rex 3092 df-rab 3419 df-v 3459 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-br 5112 df-opab 5176 df-mpt 5195 df-id 5558 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-iota 6496 df-fun 6542 df-fn 6543 df-fv 6548 df-tpos 8228 |
| This theorem is used by: tposres3 49716 |
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