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Theorem pw1map 16939
Description: Mapping between (𝒫 1o𝑚 𝐴) and subsets of 𝐴. (Contributed by Jim Kingdon, 9-Jan-2026.)
Hypothesis
Ref Expression
pw1map.f 𝐹 = (𝑠 ∈ (𝒫 1o𝑚 𝐴) ↦ {𝑧𝐴 ∣ (𝑠𝑧) = 1o})
Assertion
Ref Expression
pw1map (𝐴𝑉𝐹:(𝒫 1o𝑚 𝐴)–1-1-onto→𝒫 𝐴)
Distinct variable groups:   𝐴,𝑠,𝑧   𝑉,𝑠,𝑧
Allowed substitution hints:   𝐹(𝑧,𝑠)

Proof of Theorem pw1map
Dummy variables 𝑢 𝑤 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 pw1map.f . 2 𝐹 = (𝑠 ∈ (𝒫 1o𝑚 𝐴) ↦ {𝑧𝐴 ∣ (𝑠𝑧) = 1o})
2 ssrab2 3333 . . . 4 {𝑧𝐴 ∣ (𝑠𝑧) = 1o} ⊆ 𝐴
3 elpw2g 4287 . . . 4 (𝐴𝑉 → ({𝑧𝐴 ∣ (𝑠𝑧) = 1o} ∈ 𝒫 𝐴 ↔ {𝑧𝐴 ∣ (𝑠𝑧) = 1o} ⊆ 𝐴))
42, 3mpbiri 168 . . 3 (𝐴𝑉 → {𝑧𝐴 ∣ (𝑠𝑧) = 1o} ∈ 𝒫 𝐴)
54adantr 276 . 2 ((𝐴𝑉𝑠 ∈ (𝒫 1o𝑚 𝐴)) → {𝑧𝐴 ∣ (𝑠𝑧) = 1o} ∈ 𝒫 𝐴)
6 fmelpw1o 7596 . . . . 5 if(𝑢𝑤, 1o, ∅) ∈ 𝒫 1o
76a1i 9 . . . 4 (((𝐴𝑉𝑤 ∈ 𝒫 𝐴) ∧ 𝑢𝐴) → if(𝑢𝑤, 1o, ∅) ∈ 𝒫 1o)
87fmpttd 5854 . . 3 ((𝐴𝑉𝑤 ∈ 𝒫 𝐴) → (𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅)):𝐴⟶𝒫 1o)
9 1oex 6685 . . . . . 6 1o ∈ V
109pwex 4315 . . . . 5 𝒫 1o ∈ V
1110a1i 9 . . . 4 ((𝐴𝑉𝑤 ∈ 𝒫 𝐴) → 𝒫 1o ∈ V)
12 simpl 109 . . . 4 ((𝐴𝑉𝑤 ∈ 𝒫 𝐴) → 𝐴𝑉)
1311, 12elmapd 6926 . . 3 ((𝐴𝑉𝑤 ∈ 𝒫 𝐴) → ((𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅)) ∈ (𝒫 1o𝑚 𝐴) ↔ (𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅)):𝐴⟶𝒫 1o))
148, 13mpbird 167 . 2 ((𝐴𝑉𝑤 ∈ 𝒫 𝐴) → (𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅)) ∈ (𝒫 1o𝑚 𝐴))
15 simplr 533 . . . . . . . . 9 ((((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑠 = (𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅))) ∧ 𝑧𝐴) → 𝑠 = (𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅)))
1615fveq1d 5692 . . . . . . . 8 ((((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑠 = (𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅))) ∧ 𝑧𝐴) → (𝑠𝑧) = ((𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅))‘𝑧))
17 eqid 2238 . . . . . . . . 9 (𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅)) = (𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅))
18 elequ1 2213 . . . . . . . . . 10 (𝑢 = 𝑧 → (𝑢𝑤𝑧𝑤))
1918ifbid 3659 . . . . . . . . 9 (𝑢 = 𝑧 → if(𝑢𝑤, 1o, ∅) = if(𝑧𝑤, 1o, ∅))
20 simpr 110 . . . . . . . . 9 ((((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑠 = (𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅))) ∧ 𝑧𝐴) → 𝑧𝐴)
21 0ex 4255 . . . . . . . . . . 11 ∅ ∈ V
229, 21ifex 4627 . . . . . . . . . 10 if(𝑧𝑤, 1o, ∅) ∈ V
2322a1i 9 . . . . . . . . 9 ((((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑠 = (𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅))) ∧ 𝑧𝐴) → if(𝑧𝑤, 1o, ∅) ∈ V)
2417, 19, 20, 23fvmptd3 5793 . . . . . . . 8 ((((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑠 = (𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅))) ∧ 𝑧𝐴) → ((𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅))‘𝑧) = if(𝑧𝑤, 1o, ∅))
2516, 24eqtrd 2271 . . . . . . 7 ((((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑠 = (𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅))) ∧ 𝑧𝐴) → (𝑠𝑧) = if(𝑧𝑤, 1o, ∅))
2625eqeq1d 2247 . . . . . 6 ((((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑠 = (𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅))) ∧ 𝑧𝐴) → ((𝑠𝑧) = 1o ↔ if(𝑧𝑤, 1o, ∅) = 1o))
27 iftrueb01 7572 . . . . . 6 (if(𝑧𝑤, 1o, ∅) = 1o𝑧𝑤)
2826, 27bitr2di 197 . . . . 5 ((((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑠 = (𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅))) ∧ 𝑧𝐴) → (𝑧𝑤 ↔ (𝑠𝑧) = 1o))
2928rabbidva 2809 . . . 4 (((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑠 = (𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅))) → {𝑧𝐴𝑧𝑤} = {𝑧𝐴 ∣ (𝑠𝑧) = 1o})
30 elpwi 3694 . . . . . . . . 9 (𝑤 ∈ 𝒫 𝐴𝑤𝐴)
31 dfss1 3435 . . . . . . . . 9 (𝑤𝐴 ↔ (𝐴𝑤) = 𝑤)
3230, 31sylib 122 . . . . . . . 8 (𝑤 ∈ 𝒫 𝐴 → (𝐴𝑤) = 𝑤)
33 dfin5 3227 . . . . . . . 8 (𝐴𝑤) = {𝑧𝐴𝑧𝑤}
3432, 33eqtr3di 2286 . . . . . . 7 (𝑤 ∈ 𝒫 𝐴𝑤 = {𝑧𝐴𝑧𝑤})
3534eqeq1d 2247 . . . . . 6 (𝑤 ∈ 𝒫 𝐴 → (𝑤 = {𝑧𝐴 ∣ (𝑠𝑧) = 1o} ↔ {𝑧𝐴𝑧𝑤} = {𝑧𝐴 ∣ (𝑠𝑧) = 1o}))
3635adantl 277 . . . . 5 ((𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴) → (𝑤 = {𝑧𝐴 ∣ (𝑠𝑧) = 1o} ↔ {𝑧𝐴𝑧𝑤} = {𝑧𝐴 ∣ (𝑠𝑧) = 1o}))
3736ad2antlr 493 . . . 4 (((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑠 = (𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅))) → (𝑤 = {𝑧𝐴 ∣ (𝑠𝑧) = 1o} ↔ {𝑧𝐴𝑧𝑤} = {𝑧𝐴 ∣ (𝑠𝑧) = 1o}))
3829, 37mpbird 167 . . 3 (((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑠 = (𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅))) → 𝑤 = {𝑧𝐴 ∣ (𝑠𝑧) = 1o})
39 simplrl 541 . . . . . 6 (((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑤 = {𝑧𝐴 ∣ (𝑠𝑧) = 1o}) → 𝑠 ∈ (𝒫 1o𝑚 𝐴))
4010a1i 9 . . . . . . 7 (((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑤 = {𝑧𝐴 ∣ (𝑠𝑧) = 1o}) → 𝒫 1o ∈ V)
41 simpll 531 . . . . . . 7 (((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑤 = {𝑧𝐴 ∣ (𝑠𝑧) = 1o}) → 𝐴𝑉)
4240, 41elmapd 6926 . . . . . 6 (((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑤 = {𝑧𝐴 ∣ (𝑠𝑧) = 1o}) → (𝑠 ∈ (𝒫 1o𝑚 𝐴) ↔ 𝑠:𝐴⟶𝒫 1o))
4339, 42mpbid 147 . . . . 5 (((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑤 = {𝑧𝐴 ∣ (𝑠𝑧) = 1o}) → 𝑠:𝐴⟶𝒫 1o)
4443feqmptd 5750 . . . 4 (((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑤 = {𝑧𝐴 ∣ (𝑠𝑧) = 1o}) → 𝑠 = (𝑢𝐴 ↦ (𝑠𝑢)))
45 simpr 110 . . . . . . . . . 10 (((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑤 = {𝑧𝐴 ∣ (𝑠𝑧) = 1o}) → 𝑤 = {𝑧𝐴 ∣ (𝑠𝑧) = 1o})
4645eleq2d 2308 . . . . . . . . 9 (((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑤 = {𝑧𝐴 ∣ (𝑠𝑧) = 1o}) → (𝑢𝑤𝑢 ∈ {𝑧𝐴 ∣ (𝑠𝑧) = 1o}))
47 fveqeq2 5699 . . . . . . . . . 10 (𝑧 = 𝑢 → ((𝑠𝑧) = 1o ↔ (𝑠𝑢) = 1o))
4847elrab 2982 . . . . . . . . 9 (𝑢 ∈ {𝑧𝐴 ∣ (𝑠𝑧) = 1o} ↔ (𝑢𝐴 ∧ (𝑠𝑢) = 1o))
4946, 48bitrdi 196 . . . . . . . 8 (((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑤 = {𝑧𝐴 ∣ (𝑠𝑧) = 1o}) → (𝑢𝑤 ↔ (𝑢𝐴 ∧ (𝑠𝑢) = 1o)))
5049baibd 935 . . . . . . 7 ((((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑤 = {𝑧𝐴 ∣ (𝑠𝑧) = 1o}) ∧ 𝑢𝐴) → (𝑢𝑤 ↔ (𝑠𝑢) = 1o))
5150ifbid 3659 . . . . . 6 ((((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑤 = {𝑧𝐴 ∣ (𝑠𝑧) = 1o}) ∧ 𝑢𝐴) → if(𝑢𝑤, 1o, ∅) = if((𝑠𝑢) = 1o, 1o, ∅))
5243ffvelcdmda 5834 . . . . . . 7 ((((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑤 = {𝑧𝐴 ∣ (𝑠𝑧) = 1o}) ∧ 𝑢𝐴) → (𝑠𝑢) ∈ 𝒫 1o)
53 pw1if 7574 . . . . . . 7 ((𝑠𝑢) ∈ 𝒫 1o → if((𝑠𝑢) = 1o, 1o, ∅) = (𝑠𝑢))
5452, 53syl 14 . . . . . 6 ((((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑤 = {𝑧𝐴 ∣ (𝑠𝑧) = 1o}) ∧ 𝑢𝐴) → if((𝑠𝑢) = 1o, 1o, ∅) = (𝑠𝑢))
5551, 54eqtr2d 2272 . . . . 5 ((((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑤 = {𝑧𝐴 ∣ (𝑠𝑧) = 1o}) ∧ 𝑢𝐴) → (𝑠𝑢) = if(𝑢𝑤, 1o, ∅))
5655mpteq2dva 4216 . . . 4 (((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑤 = {𝑧𝐴 ∣ (𝑠𝑧) = 1o}) → (𝑢𝐴 ↦ (𝑠𝑢)) = (𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅)))
5744, 56eqtrd 2271 . . 3 (((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) ∧ 𝑤 = {𝑧𝐴 ∣ (𝑠𝑧) = 1o}) → 𝑠 = (𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅)))
5838, 57impbida 604 . 2 ((𝐴𝑉 ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ∧ 𝑤 ∈ 𝒫 𝐴)) → (𝑠 = (𝑢𝐴 ↦ if(𝑢𝑤, 1o, ∅)) ↔ 𝑤 = {𝑧𝐴 ∣ (𝑠𝑧) = 1o}))
591, 5, 14, 58f1o2d 6285 1 (𝐴𝑉𝐹:(𝒫 1o𝑚 𝐴)–1-1-onto→𝒫 𝐴)
Colors of variables: wff set class
Syntax hints:  wi 4  wa 104  wb 105   = wceq 1402  wcel 2209  {crab 2532  Vcvv 2821  cin 3219  wss 3220  c0 3520  ifcif 3635  𝒫 cpw 3685  cmpt 4187  wf 5368  1-1-ontowf1o 5371  cfv 5372  (class class class)co 6075  1oc1o 6670  𝑚 cmap 6912
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-13 2211  ax-14 2212  ax-ext 2220  ax-sep 4244  ax-nul 4254  ax-pow 4306  ax-pr 4341  ax-un 4573  ax-setind 4679
This theorem depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-fal 1408  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ne 2421  df-ral 2533  df-rex 2534  df-rab 2537  df-v 2823  df-sbc 3052  df-csb 3148  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-nul 3521  df-if 3636  df-pw 3687  df-sn 3711  df-pr 3712  df-op 3714  df-uni 3931  df-br 4126  df-opab 4188  df-mpt 4189  df-tr 4225  df-id 4433  df-iord 4506  df-on 4508  df-suc 4511  df-xp 4775  df-rel 4776  df-cnv 4777  df-co 4778  df-dm 4779  df-rn 4780  df-res 4781  df-ima 4782  df-iota 5332  df-fun 5374  df-fn 5375  df-f 5376  df-f1 5377  df-fo 5378  df-f1o 5379  df-fv 5380  df-ov 6078  df-oprab 6079  df-mpo 6080  df-1o 6677  df-map 6914
This theorem is referenced by:  pw1mapen  16940
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