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Theorem ch0pss 31583
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 3915 . 2 (0𝐴 ↔ (0𝐴 ∧ 0𝐴))
2 necom 3000 . . 3 (0𝐴𝐴 ≠ 0)
3 ch0le 31579 . . . 4 (𝐴C → 0𝐴)
43biantrurd 539 . . 3 (𝐴C → (0𝐴 ↔ (0𝐴 ∧ 0𝐴)))
52, 4bitr3id 287 . 2 (𝐴C → (𝐴 ≠ 0 ↔ (0𝐴 ∧ 0𝐴)))
61, 5bitr4id 292 1 (𝐴C → (0𝐴𝐴 ≠ 0))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 208  wa 398  wcel 2132  wne 2947  wss 3895  wpss 3896   C cch 31067  0c0h 31073
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1805  ax-4 1819  ax-5 1920  ax-6 1977  ax-7 2018  ax-8 2134  ax-9 2142  ax-ext 2724  ax-sep 5236  ax-hilex 31137
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 857  df-3an 1097  df-tru 1553  df-fal 1563  df-ex 1790  df-sb 2081  df-clab 2731  df-cleq 2744  df-clel 2827  df-ne 2948  df-rab 3405  df-v 3446  df-dif 3898  df-un 3900  df-in 3902  df-ss 3912  df-pss 3915  df-nul 4277  df-if 4471  df-pw 4547  df-sn 4573  df-pr 4575  df-op 4579  df-uni 4856  df-br 5091  df-opab 5153  df-xp 5642  df-cnv 5644  df-dm 5646  df-rn 5647  df-res 5648  df-ima 5649  df-iota 6462  df-fv 6514  df-ov 7384  df-sh 31345  df-ch 31359  df-ch0 31391
This theorem is referenced by:  elat2  32478
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