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Theorem sh0le 32099
Description: The zero subspace is the smallest subspace. (Contributed by NM, 3-Jun-2004.) (New usage is discouraged.)
Assertion
Ref Expression
sh0le (𝐴 ∈ Sℋ → 0ℋ ⊆ 𝐴)

Proof of Theorem sh0le
StepHypRef Expression
1 df-ch0 31912 . 2 0ℋ = {0ℎ}
2 sh0 31875 . . 3 (𝐴 ∈ Sℋ → 0ℎ ∈ 𝐴)
32snssd 4749 . 2 (𝐴 ∈ Sℋ → {0ℎ} ⊆ 𝐴)
41, 3eqsstrid 3951 1 (𝐴 ∈ Sℋ → 0ℋ ⊆ 𝐴)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ∈ wcel 2147   ⊆ wss 3900  {csn 4588  0ℎc0v 31583   Sℋ csh 31587  0ℋc0h 31594
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-ext 2735  ax-sep 5255  ax-hilex 31658
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-sb 2102  df-clab 2742  df-cleq 2755  df-clel 2839  df-rab 3417  df-v 3456  df-ss 3901  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-op 4841  df-br 5109  df-opab 5174  df-xp 5664  df-cnv 5666  df-dm 5668  df-rn 5669  df-res 5670  df-ima 5671  df-sh 31866  df-ch0 31912
This theorem is used by:  ch0le  32100  shle0  32101  orthin  32105  ssjo  32106  shs0i  32108  span0  32201
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