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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 50098 | . . 3 ⊢ (tpos 𝐹 ↾ 𝑅) = ((tpos 𝐹 ↾ ◡◡𝑅) ∪ (𝐹 ↾ (𝑅 ∩ {∅}))) | |
| 2 | tposres2.1 | . . . . 5 ⊢ (𝜑 → ¬ ∅ ∈ (dom 𝐹 ∩ 𝑅)) | |
| 3 | resinsn 50092 | . . . . 5 ⊢ ((𝐹 ↾ (𝑅 ∩ {∅})) = ∅ ↔ ¬ ∅ ∈ (dom 𝐹 ∩ 𝑅)) | |
| 4 | 2, 3 | sylibr 237 | . . . 4 ⊢ (𝜑 → (𝐹 ↾ (𝑅 ∩ {∅})) = ∅) |
| 5 | 4 | uneq2d 4166 | . . 3 ⊢ (𝜑 → ((tpos 𝐹 ↾ ◡◡𝑅) ∪ (𝐹 ↾ (𝑅 ∩ {∅}))) = ((tpos 𝐹 ↾ ◡◡𝑅) ∪ ∅)) |
| 6 | 1, 5 | eqtrid 2807 | . 2 ⊢ (𝜑 → (tpos 𝐹 ↾ 𝑅) = ((tpos 𝐹 ↾ ◡◡𝑅) ∪ ∅)) |
| 7 | un0 4343 | . 2 ⊢ ((tpos 𝐹 ↾ ◡◡𝑅) ∪ ∅) = (tpos 𝐹 ↾ ◡◡𝑅) | |
| 8 | 6, 7 | eqtrdi 2811 | 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 1569 ∈ wcel 2144 ∩ cin 4088 ∪ cun 4148 ∅c0 4277 {csn 4584 ◡ccnv 5649 dom cdm 5650 ↾ cres 5652 tpos ctpos 8247 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7753 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-ss 3897 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5545 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-iota 6496 df-fun 6543 df-fn 6544 df-fv 6549 df-tpos 8248 |
| This theorem is used by: tposres3 50101 |
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