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Theorem pw1mapen 16597
Description: Equinumerosity of (𝒫 1o𝑚 𝐴) and the set of subsets of 𝐴. (Contributed by Jim Kingdon, 10-Jan-2026.)
Assertion
Ref Expression
pw1mapen (𝐴𝑉 → (𝒫 1o𝑚 𝐴) ≈ 𝒫 𝐴)

Proof of Theorem pw1mapen
Dummy variables 𝑠 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 fnmap 6823 . . 3 𝑚 Fn (V × V)
2 1oex 6589 . . . 4 1o ∈ V
32pwex 4273 . . 3 𝒫 1o ∈ V
4 elex 2814 . . 3 (𝐴𝑉𝐴 ∈ V)
5 fnovex 6050 . . 3 (( ↑𝑚 Fn (V × V) ∧ 𝒫 1o ∈ V ∧ 𝐴 ∈ V) → (𝒫 1o𝑚 𝐴) ∈ V)
61, 3, 4, 5mp3an12i 1377 . 2 (𝐴𝑉 → (𝒫 1o𝑚 𝐴) ∈ V)
7 eqid 2231 . . 3 (𝑠 ∈ (𝒫 1o𝑚 𝐴) ↦ {𝑧𝐴 ∣ (𝑠𝑧) = 1o}) = (𝑠 ∈ (𝒫 1o𝑚 𝐴) ↦ {𝑧𝐴 ∣ (𝑠𝑧) = 1o})
87pw1map 16596 . 2 (𝐴𝑉 → (𝑠 ∈ (𝒫 1o𝑚 𝐴) ↦ {𝑧𝐴 ∣ (𝑠𝑧) = 1o}):(𝒫 1o𝑚 𝐴)–1-1-onto→𝒫 𝐴)
9 f1oeng 6929 . 2 (((𝒫 1o𝑚 𝐴) ∈ V ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ↦ {𝑧𝐴 ∣ (𝑠𝑧) = 1o}):(𝒫 1o𝑚 𝐴)–1-1-onto→𝒫 𝐴) → (𝒫 1o𝑚 𝐴) ≈ 𝒫 𝐴)
106, 8, 9syl2anc 411 1 (𝐴𝑉 → (𝒫 1o𝑚 𝐴) ≈ 𝒫 𝐴)
Colors of variables: wff set class
Syntax hints:  wi 4   = wceq 1397  wcel 2202  {crab 2514  Vcvv 2802  𝒫 cpw 3652   class class class wbr 4088  cmpt 4150   × cxp 4723   Fn wfn 5321  1-1-ontowf1o 5325  cfv 5326  (class class class)co 6017  1oc1o 6574  𝑚 cmap 6816  cen 6906
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 619  ax-in2 620  ax-io 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-13 2204  ax-14 2205  ax-ext 2213  ax-coll 4204  ax-sep 4207  ax-nul 4215  ax-pow 4264  ax-pr 4299  ax-un 4530  ax-setind 4635
This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-fal 1403  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ne 2403  df-ral 2515  df-rex 2516  df-reu 2517  df-rab 2519  df-v 2804  df-sbc 3032  df-csb 3128  df-dif 3202  df-un 3204  df-in 3206  df-ss 3213  df-nul 3495  df-if 3606  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-iun 3972  df-br 4089  df-opab 4151  df-mpt 4152  df-tr 4188  df-id 4390  df-iord 4463  df-on 4465  df-suc 4468  df-xp 4731  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-rn 4736  df-res 4737  df-ima 4738  df-iota 5286  df-fun 5328  df-fn 5329  df-f 5330  df-f1 5331  df-fo 5332  df-f1o 5333  df-fv 5334  df-ov 6020  df-oprab 6021  df-mpo 6022  df-1st 6302  df-2nd 6303  df-1o 6581  df-map 6818  df-en 6909
This theorem is referenced by: (None)
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