Theorem shjcomi 28358

Description: Commutative law for join in S_ℋ. (Contributed by NM, 19-Oct-1999.) (New usage is discouraged.)

Hypotheses

Ref	Expression
shincl.1	⊢ 𝐴 ∈ Sℋ
shincl.2	⊢ 𝐵 ∈ Sℋ

Assertion

Ref	Expression
shjcomi	⊢ (𝐴 ∨ℋ 𝐵) = (𝐵 ∨ℋ 𝐴)

Proof of Theorem shjcomi

Step	Hyp	Ref	Expression
1		shincl.1	. 2 ⊢ 𝐴 ∈ Sℋ
2		shincl.2	. 2 ⊢ 𝐵 ∈ Sℋ
3		shjcom 28345	. 2 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (𝐴 ∨ℋ 𝐵) = (𝐵 ∨ℋ 𝐴))
4	1, 2, 3	mp2an 708	1 ⊢ (𝐴 ∨ℋ 𝐵) = (𝐵 ∨ℋ 𝐴)

Syntax hints:   = wceq 1523   ∈ wcel 2030  (class class class)co 6690   S_ℋ csh 27913   ∨_ℋ chj 27918

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1762  ax-4 1777  ax-5 1879  ax-6 1945  ax-7 1981  ax-9 2039  ax-10 2059  ax-11 2074  ax-12 2087  ax-13 2282  ax-ext 2631  ax-sep 4814  ax-nul 4822  ax-pr 4936  ax-hilex 27984

This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3an 1056  df-tru 1526  df-ex 1745  df-nf 1750  df-sb 1938  df-eu 2502  df-mo 2503  df-clab 2638  df-cleq 2644  df-clel 2647  df-nfc 2782  df-ral 2946  df-rex 2947  df-rab 2950  df-v 3233  df-sbc 3469  df-dif 3610  df-un 3612  df-in 3614  df-ss 3621  df-nul 3949  df-if 4120  df-pw 4193  df-sn 4211  df-pr 4213  df-op 4217  df-uni 4469  df-br 4686  df-opab 4746  df-id 5053  df-xp 5149  df-rel 5150  df-cnv 5151  df-co 5152  df-dm 5153  df-rn 5154  df-res 5155  df-ima 5156  df-iota 5889  df-fun 5928  df-fv 5934  df-ov 6693  df-oprab 6694  df-mpt2 6695  df-sh 28192  df-chj 28297

This theorem is referenced by:  shlej2i  28366  chjcomi  28455