Metamath Proof Explorer


Theorem hatomici

Description: The Hilbert lattice is atomic, i.e. any nonzero element is greater than or equal to some atom. Remark in Kalmbach p. 140. (Contributed by NM, 22-Jul-2001) (New usage is discouraged.)

Ref Expression
Hypothesis hatomic.1
|- A e. CH
Assertion hatomici
|- ( A =/= 0H -> E. x e. HAtoms x C_ A )

Proof

Step Hyp Ref Expression
1 hatomic.1
 |-  A e. CH
2 1 chshii
 |-  A e. SH
3 2 shatomici
 |-  ( A =/= 0H -> E. x e. HAtoms x C_ A )