Theorem 2sp 2186

Description: A double specialization (see sp 2183). Another double specialization, closer to PM*11.1, is 2stdpc4 2070. (Contributed by BJ, 15-Sep-2018.)

Assertion

Ref	Expression
2sp	⊢ (∀𝑥∀𝑦𝜑 → 𝜑)

Proof of Theorem 2sp

Step	Hyp	Ref	Expression
1		sp 2183	. 2 ⊢ (∀𝑦𝜑 → 𝜑)
2	1	sps 2185	1 ⊢ (∀𝑥∀𝑦𝜑 → 𝜑)

Syntax hints:   → wi 4  ∀wal 1538

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2007  ax-12 2177

This theorem depends on definitions:  df-bi 207  df-ex 1780

This theorem is referenced by:  cbv1h  2409  csbie2t  3912  copsex2t  5467  fprlem1  8299  wfrlem5OLD  8327  frrlem15  9771  fundmpss  35784  bj-cbv1hv  36814  ax11-pm  36850  mbfresfi  37690  cotrintab  43638  pm14.123b  44450  ich2exprop  47485  ichnreuop  47486  ichreuopeq  47487