Theorem bj-pr2ex 37262

Description: Sethood of the second projection. (Contributed by BJ, 6-Oct-2018.)

Assertion

Ref	Expression
bj-pr2ex	⊢ (𝐴 ∈ 𝑉 → pr2 𝐴 ∈ V)

Proof of Theorem bj-pr2ex

Step	Hyp	Ref	Expression
1		df-bj-pr2 37257	. 2 ⊢ pr2 𝐴 = (1o Proj 𝐴)
2		bj-projex 37237	. 2 ⊢ (𝐴 ∈ 𝑉 → (1o Proj 𝐴) ∈ V)
3	1, 2	eqeltrid 2841	1 ⊢ (𝐴 ∈ 𝑉 → pr2 𝐴 ∈ V)

Syntax hints:   → wi 4   ∈ wcel 2114  Vcvv 3442  1_oc1o 8400   Proj bj-cproj 37232  pr₂ bj-cpr2 37256

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-10 2147  ax-11 2163  ax-12 2185  ax-ext 2709  ax-rep 5226  ax-sep 5243  ax-pr 5379  ax-un 7690

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2540  df-clab 2716  df-cleq 2729  df-clel 2812  df-nfc 2886  df-ral 3053  df-rex 3063  df-rab 3402  df-v 3444  df-sbc 3743  df-csb 3852  df-dif 3906  df-un 3908  df-in 3910  df-ss 3920  df-nul 4288  df-if 4482  df-sn 4583  df-pr 4585  df-op 4589  df-uni 4866  df-br 5101  df-opab 5163  df-xp 5638  df-cnv 5640  df-dm 5642  df-rn 5643  df-res 5644  df-ima 5645  df-bj-proj 37233  df-bj-pr2 37257

This theorem is referenced by:  bj-2uplex  37264