Theorem ch0le 28989

Description: The zero subspace is the smallest member of C_ℋ. (Contributed by NM, 14-Aug-2002.) (New usage is discouraged.)

Assertion

Ref	Expression
ch0le	⊢ (𝐴 ∈ Cℋ → 0ℋ ⊆ 𝐴)

Proof of Theorem ch0le

Step	Hyp	Ref	Expression
1		chsh 28770	. 2 ⊢ (𝐴 ∈ Cℋ → 𝐴 ∈ Sℋ )
2		sh0le 28988	. 2 ⊢ (𝐴 ∈ Sℋ → 0ℋ ⊆ 𝐴)
3	1, 2	syl 17	1 ⊢ (𝐴 ∈ Cℋ → 0ℋ ⊆ 𝐴)

Syntax hints:   → wi 4   ∈ wcel 2048   ⊆ wss 3825   S_ℋ csh 28474   C_ℋ cch 28475  0_ℋc0h 28481

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1758  ax-4 1772  ax-5 1869  ax-6 1928  ax-7 1964  ax-8 2050  ax-9 2057  ax-10 2077  ax-11 2091  ax-12 2104  ax-ext 2745  ax-sep 5054  ax-hilex 28545

This theorem depends on definitions:  df-bi 199  df-an 388  df-or 834  df-3an 1070  df-tru 1510  df-ex 1743  df-nf 1747  df-sb 2014  df-clab 2754  df-cleq 2765  df-clel 2840  df-nfc 2912  df-rex 3088  df-rab 3091  df-v 3411  df-dif 3828  df-un 3830  df-in 3832  df-ss 3839  df-nul 4174  df-if 4345  df-pw 4418  df-sn 4436  df-pr 4438  df-op 4442  df-uni 4707  df-br 4924  df-opab 4986  df-xp 5406  df-cnv 5408  df-dm 5410  df-rn 5411  df-res 5412  df-ima 5413  df-iota 6146  df-fv 6190  df-ov 6973  df-sh 28753  df-ch 28767  df-ch0 28799

This theorem is referenced by:  chnlen0  28992  ch0pss  28993  ch0lei  28999  chssoc  29044  atcveq0  29896