Theorem elelpwi 4552

Description: If 𝐴 belongs to a part of 𝐶, then 𝐴 belongs to 𝐶. (Contributed by FL, 3-Aug-2009.)

Assertion

Ref	Expression
elelpwi	⊢ ((𝐴 ∈ 𝐵 ∧ 𝐵 ∈ 𝒫 𝐶) → 𝐴 ∈ 𝐶)

Proof of Theorem elelpwi

Step	Hyp	Ref	Expression
1		elpwi 4549	. . 3 ⊢ (𝐵 ∈ 𝒫 𝐶 → 𝐵 ⊆ 𝐶)
2	1	sseld 3921	. 2 ⊢ (𝐵 ∈ 𝒫 𝐶 → (𝐴 ∈ 𝐵 → 𝐴 ∈ 𝐶))
3	2	impcom 407	1 ⊢ ((𝐴 ∈ 𝐵 ∧ 𝐵 ∈ 𝒫 𝐶) → 𝐴 ∈ 𝐶)

Syntax hints:   → wi 4   ∧ wa 395   ∈ wcel 2114  𝒫 cpw 4542

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-ext 2709

This theorem depends on definitions:  df-bi 207  df-an 396  df-tru 1545  df-ex 1782  df-sb 2069  df-clab 2716  df-cleq 2729  df-clel 2812  df-ss 3907  df-pw 4544

This theorem is referenced by:  unipw  5397  axdc2lem  10361  axdc3lem4  10366  homarel  17994  txdis  23607  uhgredgrnv  29213  fpwrelmap  32821  insiga  34297  measinblem  34380  ddemeas  34396  imambfm  34422  totprobd  34586  dstrvprob  34632  ballotlem2  34649  requad2  48111  scmsuppss  48859  lincvalsc0  48909  linc0scn0  48911  lincdifsn  48912  linc1  48913  lincsum  48917  lincscm  48918  lcoss  48924  lincext3  48944  islindeps2  48971  itscnhlinecirc02p  49273