Theorem chm1 5378

Description: Meet with lattice one in CH.

Hypothesis

Ref	Expression
ch0le.1	|- A e. CH

Assertion

Ref	Expression
chm1	|- (A i^i H~) = A

Proof of Theorem chm1

Step	Hyp	Ref	Expression
1		inss1 1657	. 2 |- (A i^i H~) (_ A
2		ssid 1519	. . 3 |- A (_ A
3		ch0le.1	. . . 4 |- A e. CH
4	3	chssi 5136	. . 3 |- A (_ H~
5	2, 4	ssini 1660	. 2 |- A (_ (A i^i H~)
6	1, 5	eqssi 1517	1 |- (A i^i H~) = A

Syntax hints:   = wceq 1091   e. wcel 1092   i^i cin 1486  H~chil 4958  CHcch 4968

This theorem is referenced by:  stcltrlem1 5709

This theorem was proved from axioms:  ax-1 3  ax-2 4  ax-3 5  ax-mp 6  ax-4 673  ax-5 674  ax-6 675  ax-7 676  ax-gen 677  ax-8 798  ax-9 799  ax-10 800  ax-11 801  ax-12 802  ax-14 805  ax-16 922  ax-17 925  ax-ext 1074  ax-rep 1075  ax-hilex 4983

This theorem depends on definitions:  df-bi 128  df-an 198  df-ex 679  df-sb 853  df-clab 1093  df-cleq 1097  df-clel 1099  df-ral 1205  df-v 1349  df-in 1491  df-ss 1492  df-sh 5114  df-ch 5127

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