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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 50322 | . . 3 ⊢ (tpos 𝐹 ↾ 𝑅) = ((tpos 𝐹 ↾ ◡◡𝑅) ∪ (𝐹 ↾ (𝑅 ∩ {∅}))) | |
| 2 | tposres2.1 | . . . . 5 ⊢ (𝜑 → ¬ ∅ ∈ (dom 𝐹 ∩ 𝑅)) | |
| 3 | resinsn 50316 | . . . . 5 ⊢ ((𝐹 ↾ (𝑅 ∩ {∅})) = ∅ ↔ ¬ ∅ ∈ (dom 𝐹 ∩ 𝑅)) | |
| 4 | 2, 3 | sylibr 237 | . . . 4 ⊢ (𝜑 → (𝐹 ↾ (𝑅 ∩ {∅})) = ∅) |
| 5 | 4 | uneq2d 4170 | . . 3 ⊢ (𝜑 → ((tpos 𝐹 ↾ ◡◡𝑅) ∪ (𝐹 ↾ (𝑅 ∩ {∅}))) = ((tpos 𝐹 ↾ ◡◡𝑅) ∪ ∅)) |
| 6 | 1, 5 | eqtrid 2810 | . 2 ⊢ (𝜑 → (tpos 𝐹 ↾ 𝑅) = ((tpos 𝐹 ↾ ◡◡𝑅) ∪ ∅)) |
| 7 | un0 4347 | . 2 ⊢ ((tpos 𝐹 ↾ ◡◡𝑅) ∪ ∅) = (tpos 𝐹 ↾ ◡◡𝑅) | |
| 8 | 6, 7 | eqtrdi 2814 | 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 2147 ∩ cin 4092 ∪ cun 4152 ∅c0 4281 {csn 4588 ◡ccnv 5657 dom cdm 5658 ↾ cres 5660 tpos ctpos 8280 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5255 ax-nul 5266 ax-pow 5334 ax-pr 5398 ax-un 7783 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-br 5109 df-opab 5174 df-mpt 5193 df-id 5553 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-iota 6520 df-fun 6568 df-fn 6569 df-fv 6574 df-tpos 8281 |
| This theorem is used by: tposres3 50325 |
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