Theorem elpwi 3683

Description: Subset relation implied by membership in a power class. (Contributed by NM, 17-Feb-2007.)

Assertion

Ref	Expression
elpwi	⊢ (𝐴 ∈ 𝒫 𝐵 → 𝐴 ⊆ 𝐵)

Proof of Theorem elpwi

Step	Hyp	Ref	Expression
1		elpwg 3682	. 2 ⊢ (𝐴 ∈ 𝒫 𝐵 → (𝐴 ∈ 𝒫 𝐵 ↔ 𝐴 ⊆ 𝐵))
2	1	ibi 176	1 ⊢ (𝐴 ∈ 𝒫 𝐵 → 𝐴 ⊆ 𝐵)

Syntax hints:   → wi 4   ∈ wcel 2205   ⊆ wss 3214  𝒫 cpw 3674

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-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-ext 2216

This theorem depends on definitions:  df-bi 117  df-tru 1401  df-nf 1510  df-sb 1812  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-v 2817  df-in 3220  df-ss 3227  df-pw 3676

This theorem is referenced by:  elpwid  3685  elelpwi  3686  elpw2g  4273  eldifpw  4603  iunpw  4606  f1opw2  6269  pw1dc1  7187  fi0  7275  2omap  7282  2omapfi  7284  pw1m  7547  pw1on  7549  hashfibclem  11231  lspf  14663  cnntr  15216  edgssv2en  16320  pw1map  16895