Theorem alrimdd 1768

Description: Deduction from Theorem 19.21 of [Margaris] p. 90. (Contributed by Mario Carneiro, 24-Sep-2016.)

Hypotheses

Ref	Expression
alrimdd.1	|- F/xph
alrimdd.2	|- (ph -> F/xps)
alrimdd.3	|- (ph -> (ps -> ch))

Assertion

Ref	Expression
alrimdd	|- (ph -> (ps -> A.xch))

Proof of Theorem alrimdd

Step	Hyp	Ref	Expression
1		alrimdd.2	. . 3 |- (ph -> F/xps)
2	1	nfrd 1763	. 2 |- (ph -> (ps -> A.xps))
3		alrimdd.1	. . 3 |- F/xph
4		alrimdd.3	. . 3 |- (ph -> (ps -> ch))
5	3, 4	alimd 1764	. 2 |- (ph -> (A.xps -> A.xch))
6	2, 5	syld 40	1 |- (ph -> (ps -> A.xch))

Syntax hints:   -> wi 4  A.wal 1540   F/wnf 1544

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1546  ax-5 1557  ax-17 1616  ax-9 1654  ax-8 1675  ax-11 1746

This theorem depends on definitions:  df-bi 177  df-ex 1542  df-nf 1545

This theorem is referenced by:  alrimd  1769  19.23tOLD  1819