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| Mirrors > Home > MPE Home > Th. List > Mathboxes > dssmapfvd | Structured version Visualization version GIF version | ||
| Description: Value of the duality operator for self-mappings of subsets of a base set, 𝐵. (Contributed by RP, 19-Apr-2021.) |
| Ref | Expression |
|---|---|
| dssmapfvd.o | ⊢ 𝑂 = (𝑏 ∈ V ↦ (𝑓 ∈ (𝒫 𝑏 ↑m 𝒫 𝑏) ↦ (𝑠 ∈ 𝒫 𝑏 ↦ (𝑏 ∖ (𝑓‘(𝑏 ∖ 𝑠)))))) |
| dssmapfvd.d | ⊢ 𝐷 = (𝑂‘𝐵) |
| dssmapfvd.b | ⊢ (𝜑 → 𝐵 ∈ 𝑉) |
| Ref | Expression |
|---|---|
| dssmapfvd | ⊢ (𝜑 → 𝐷 = (𝑓 ∈ (𝒫 𝐵 ↑m 𝒫 𝐵) ↦ (𝑠 ∈ 𝒫 𝐵 ↦ (𝐵 ∖ (𝑓‘(𝐵 ∖ 𝑠)))))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dssmapfvd.d | . 2 ⊢ 𝐷 = (𝑂‘𝐵) | |
| 2 | dssmapfvd.o | . . 3 ⊢ 𝑂 = (𝑏 ∈ V ↦ (𝑓 ∈ (𝒫 𝑏 ↑m 𝒫 𝑏) ↦ (𝑠 ∈ 𝒫 𝑏 ↦ (𝑏 ∖ (𝑓‘(𝑏 ∖ 𝑠)))))) | |
| 3 | pweq 4570 | . . . . 5 ⊢ (𝑏 = 𝐵 → 𝒫 𝑏 = 𝒫 𝐵) | |
| 4 | 3, 3 | oveq12d 7438 | . . . 4 ⊢ (𝑏 = 𝐵 → (𝒫 𝑏 ↑m 𝒫 𝑏) = (𝒫 𝐵 ↑m 𝒫 𝐵)) |
| 5 | id 23 | . . . . . 6 ⊢ (𝑏 = 𝐵 → 𝑏 = 𝐵) | |
| 6 | difeq1 4056 | . . . . . . 7 ⊢ (𝑏 = 𝐵 → (𝑏 ∖ 𝑠) = (𝐵 ∖ 𝑠)) | |
| 7 | 6 | fveq2d 6889 | . . . . . 6 ⊢ (𝑏 = 𝐵 → (𝑓‘(𝑏 ∖ 𝑠)) = (𝑓‘(𝐵 ∖ 𝑠))) |
| 8 | 5, 7 | difeq12d 4064 | . . . . 5 ⊢ (𝑏 = 𝐵 → (𝑏 ∖ (𝑓‘(𝑏 ∖ 𝑠))) = (𝐵 ∖ (𝑓‘(𝐵 ∖ 𝑠)))) |
| 9 | 3, 8 | mpteq12dv 5191 | . . . 4 ⊢ (𝑏 = 𝐵 → (𝑠 ∈ 𝒫 𝑏 ↦ (𝑏 ∖ (𝑓‘(𝑏 ∖ 𝑠)))) = (𝑠 ∈ 𝒫 𝐵 ↦ (𝐵 ∖ (𝑓‘(𝐵 ∖ 𝑠))))) |
| 10 | 4, 9 | mpteq12dv 5191 | . . 3 ⊢ (𝑏 = 𝐵 → (𝑓 ∈ (𝒫 𝑏 ↑m 𝒫 𝑏) ↦ (𝑠 ∈ 𝒫 𝑏 ↦ (𝑏 ∖ (𝑓‘(𝑏 ∖ 𝑠))))) = (𝑓 ∈ (𝒫 𝐵 ↑m 𝒫 𝐵) ↦ (𝑠 ∈ 𝒫 𝐵 ↦ (𝐵 ∖ (𝑓‘(𝐵 ∖ 𝑠)))))) |
| 11 | dssmapfvd.b | . . . 4 ⊢ (𝜑 → 𝐵 ∈ 𝑉) | |
| 12 | 11 | elexd 3473 | . . 3 ⊢ (𝜑 → 𝐵 ∈ V) |
| 13 | ovex 7453 | . . . 4 ⊢ (𝒫 𝐵 ↑m 𝒫 𝐵) ∈ V | |
| 14 | mptexg 7227 | . . . 4 ⊢ ((𝒫 𝐵 ↑m 𝒫 𝐵) ∈ V → (𝑓 ∈ (𝒫 𝐵 ↑m 𝒫 𝐵) ↦ (𝑠 ∈ 𝒫 𝐵 ↦ (𝐵 ∖ (𝑓‘(𝐵 ∖ 𝑠))))) ∈ V) | |
| 15 | 13, 14 | mp1i 14 | . . 3 ⊢ (𝜑 → (𝑓 ∈ (𝒫 𝐵 ↑m 𝒫 𝐵) ↦ (𝑠 ∈ 𝒫 𝐵 ↦ (𝐵 ∖ (𝑓‘(𝐵 ∖ 𝑠))))) ∈ V) |
| 16 | 2, 10, 12, 15 | fvmptd3 7017 | . 2 ⊢ (𝜑 → (𝑂‘𝐵) = (𝑓 ∈ (𝒫 𝐵 ↑m 𝒫 𝐵) ↦ (𝑠 ∈ 𝒫 𝐵 ↦ (𝐵 ∖ (𝑓‘(𝐵 ∖ 𝑠)))))) |
| 17 | 1, 16 | eqtrid 2807 | 1 ⊢ (𝜑 → 𝐷 = (𝑓 ∈ (𝒫 𝐵 ↑m 𝒫 𝐵) ↦ (𝑠 ∈ 𝒫 𝐵 ↦ (𝐵 ∖ (𝑓‘(𝐵 ∖ 𝑠)))))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 ∈ wcel 2144 Vcvv 3450 ∖ cdif 4045 𝒫 cpw 4556 ↦ cmpt 5185 ‘cfv 6538 (class class class)co 7420 ↑m cmap 8850 |
| 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-rep 5231 ax-sep 5248 ax-nul 5259 ax-pr 5390 |
| 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-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-iun 4952 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 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-ov 7423 |
| This theorem is used by: dssmapfv2d 45111 dssmapnvod 45113 dssmapf1od 45114 |
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