Theorem clmgmOLD 37838

Description: Obsolete version of mgmcl 18669 as of 3-Feb-2020. Closure of a magma. (Contributed by FL, 14-Sep-2010.) (New usage is discouraged.) (Proof modification is discouraged.)

Hypothesis

Ref	Expression
clmgmOLD.1	⊢ 𝑋 = dom dom 𝐺

Assertion

Ref	Expression
clmgmOLD	⊢ ((𝐺 ∈ Magma ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → (𝐴𝐺𝐵) ∈ 𝑋)

Proof of Theorem clmgmOLD

Step	Hyp	Ref	Expression
1		clmgmOLD.1	. . . . 5 ⊢ 𝑋 = dom dom 𝐺
2	1	ismgmOLD 37837	. . . 4 ⊢ (𝐺 ∈ Magma → (𝐺 ∈ Magma ↔ 𝐺:(𝑋 × 𝑋)⟶𝑋))
3		fovcdm 7603	. . . . 5 ⊢ ((𝐺:(𝑋 × 𝑋)⟶𝑋 ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → (𝐴𝐺𝐵) ∈ 𝑋)
4	3	3exp 1118	. . . 4 ⊢ (𝐺:(𝑋 × 𝑋)⟶𝑋 → (𝐴 ∈ 𝑋 → (𝐵 ∈ 𝑋 → (𝐴𝐺𝐵) ∈ 𝑋)))
5	2, 4	biimtrdi 253	. . 3 ⊢ (𝐺 ∈ Magma → (𝐺 ∈ Magma → (𝐴 ∈ 𝑋 → (𝐵 ∈ 𝑋 → (𝐴𝐺𝐵) ∈ 𝑋))))
6	5	pm2.43i 52	. 2 ⊢ (𝐺 ∈ Magma → (𝐴 ∈ 𝑋 → (𝐵 ∈ 𝑋 → (𝐴𝐺𝐵) ∈ 𝑋)))
7	6	3imp 1110	1 ⊢ ((𝐺 ∈ Magma ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → (𝐴𝐺𝐵) ∈ 𝑋)

Syntax hints:   → wi 4   ∧ w3a 1086   = wceq 1537   ∈ wcel 2106   × cxp 5687  dom cdm 5689  ⟶wf 6559  (class class class)co 7431  Magmacmagm 37835

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1908  ax-6 1965  ax-7 2005  ax-8 2108  ax-9 2116  ax-10 2139  ax-11 2155  ax-12 2175  ax-ext 2706  ax-sep 5302  ax-nul 5312  ax-pr 5438  ax-un 7754

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1540  df-fal 1550  df-ex 1777  df-nf 1781  df-sb 2063  df-mo 2538  df-eu 2567  df-clab 2713  df-cleq 2727  df-clel 2814  df-ne 2939  df-ral 3060  df-rex 3069  df-rab 3434  df-v 3480  df-dif 3966  df-un 3968  df-in 3970  df-ss 3980  df-nul 4340  df-if 4532  df-sn 4632  df-pr 4634  df-op 4638  df-uni 4913  df-br 5149  df-opab 5211  df-id 5583  df-xp 5695  df-rel 5696  df-cnv 5697  df-co 5698  df-dm 5699  df-rn 5700  df-iota 6516  df-fun 6565  df-fn 6566  df-f 6567  df-fv 6571  df-ov 7434  df-mgmOLD 37836

This theorem is referenced by:  exidcl  37863