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Theorem ch0pss 29228
Description: The zero subspace is a proper subset of nonzero Hilbert lattice elements. (Contributed by NM, 9-Jun-2004.) (New usage is discouraged.)
Assertion
Ref Expression
ch0pss (𝐴C → (0𝐴𝐴 ≠ 0))

Proof of Theorem ch0pss
StepHypRef Expression
1 df-pss 3900 . 2 (0𝐴 ↔ (0𝐴 ∧ 0𝐴))
2 necom 3040 . . 3 (0𝐴𝐴 ≠ 0)
3 ch0le 29224 . . . 4 (𝐴C → 0𝐴)
43biantrurd 536 . . 3 (𝐴C → (0𝐴 ↔ (0𝐴 ∧ 0𝐴)))
52, 4bitr3id 288 . 2 (𝐴C → (𝐴 ≠ 0 ↔ (0𝐴 ∧ 0𝐴)))
61, 5bitr4id 293 1 (𝐴C → (0𝐴𝐴 ≠ 0))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 209  wa 399  wcel 2111  wne 2987  wss 3881  wpss 3882   C cch 28712  0c0h 28718
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 1911  ax-6 1970  ax-7 2015  ax-8 2113  ax-9 2121  ax-10 2142  ax-11 2158  ax-12 2175  ax-ext 2770  ax-sep 5167  ax-hilex 28782
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2070  df-clab 2777  df-cleq 2791  df-clel 2870  df-nfc 2938  df-ne 2988  df-rab 3115  df-v 3443  df-un 3886  df-in 3888  df-ss 3898  df-pss 3900  df-pw 4499  df-sn 4526  df-pr 4528  df-op 4532  df-uni 4801  df-br 5031  df-opab 5093  df-xp 5525  df-cnv 5527  df-dm 5529  df-rn 5530  df-res 5531  df-ima 5532  df-iota 6283  df-fv 6332  df-ov 7138  df-sh 28990  df-ch 29004  df-ch0 29036
This theorem is referenced by:  elat2  30123
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