Theorem ssrab3 3721

Description: Subclass relation for a restricted class abstraction. (Contributed by Jonathan Ben-Naim, 3-Jun-2011.)

Hypothesis

Ref	Expression
ssrab3.1	⊢ 𝐵 = {𝑥 ∈ 𝐴 ∣ 𝜑}

Assertion

Ref	Expression
ssrab3	⊢ 𝐵 ⊆ 𝐴

Distinct variable group:   𝑥,𝐴

Allowed substitution hints:   𝜑(𝑥)   𝐵(𝑥)

Proof of Theorem ssrab3

Step	Hyp	Ref	Expression
1		ssrab3.1	. 2 ⊢ 𝐵 = {𝑥 ∈ 𝐴 ∣ 𝜑}
2		ssrab2 3720	. 2 ⊢ {𝑥 ∈ 𝐴 ∣ 𝜑} ⊆ 𝐴
3	1, 2	eqsstri 3668	1 ⊢ 𝐵 ⊆ 𝐴

Syntax hints:   = wceq 1523  {crab 2945   ⊆ wss 3607

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1762  ax-4 1777  ax-5 1879  ax-6 1945  ax-7 1981  ax-9 2039  ax-10 2059  ax-11 2074  ax-12 2087  ax-13 2282  ax-ext 2631

This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-tru 1526  df-ex 1745  df-nf 1750  df-sb 1938  df-clab 2638  df-cleq 2644  df-clel 2647  df-nfc 2782  df-rab 2950  df-in 3614  df-ss 3621

This theorem is referenced by:  usgrres  26245  frgrwopregbsn  27297  frgrwopreg1  27298  eulerpartlemgvv  30566  reprpmtf1o  30832  hgt750lemb  30862  hgt750leme  30864  bnj1212  30996  bnj213  31078  bnj1286  31213  bnj1312  31252  bnj1523  31265