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Theorem mgmplusf 17865
 Description: The group addition function of a magma is a function into its base set. (Contributed by Mario Carneiro, 14-Aug-2015.) (Revisd by AV, 28-Jan-2020.)
Hypotheses
Ref Expression
mgmplusf.1 𝐵 = (Base‘𝑀)
mgmplusf.2 = (+𝑓𝑀)
Assertion
Ref Expression
mgmplusf (𝑀 ∈ Mgm → :(𝐵 × 𝐵)⟶𝐵)

Proof of Theorem mgmplusf
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 mgmplusf.1 . . . . 5 𝐵 = (Base‘𝑀)
2 eqid 2824 . . . . 5 (+g𝑀) = (+g𝑀)
31, 2mgmcl 17858 . . . 4 ((𝑀 ∈ Mgm ∧ 𝑥𝐵𝑦𝐵) → (𝑥(+g𝑀)𝑦) ∈ 𝐵)
433expb 1117 . . 3 ((𝑀 ∈ Mgm ∧ (𝑥𝐵𝑦𝐵)) → (𝑥(+g𝑀)𝑦) ∈ 𝐵)
54ralrimivva 3186 . 2 (𝑀 ∈ Mgm → ∀𝑥𝐵𝑦𝐵 (𝑥(+g𝑀)𝑦) ∈ 𝐵)
6 mgmplusf.2 . . . 4 = (+𝑓𝑀)
71, 2, 6plusffval 17861 . . 3 = (𝑥𝐵, 𝑦𝐵 ↦ (𝑥(+g𝑀)𝑦))
87fmpo 7762 . 2 (∀𝑥𝐵𝑦𝐵 (𝑥(+g𝑀)𝑦) ∈ 𝐵 :(𝐵 × 𝐵)⟶𝐵)
95, 8sylib 221 1 (𝑀 ∈ Mgm → :(𝐵 × 𝐵)⟶𝐵)
 Colors of variables: wff setvar class Syntax hints:   → wi 4   = wceq 1538   ∈ wcel 2115  ∀wral 3133   × cxp 5541  ⟶wf 6340  ‘cfv 6344  (class class class)co 7150  Basecbs 16486  +gcplusg 16568  +𝑓cplusf 17852  Mgmcmgm 17853 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1971  ax-7 2016  ax-8 2117  ax-9 2125  ax-10 2146  ax-11 2162  ax-12 2179  ax-ext 2796  ax-sep 5190  ax-nul 5197  ax-pow 5254  ax-pr 5318  ax-un 7456 This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2071  df-mo 2624  df-eu 2655  df-clab 2803  df-cleq 2817  df-clel 2896  df-nfc 2964  df-ne 3015  df-ral 3138  df-rex 3139  df-rab 3142  df-v 3483  df-sbc 3760  df-csb 3868  df-dif 3923  df-un 3925  df-in 3927  df-ss 3937  df-nul 4278  df-if 4452  df-pw 4525  df-sn 4552  df-pr 4554  df-op 4558  df-uni 4826  df-iun 4908  df-br 5054  df-opab 5116  df-mpt 5134  df-id 5448  df-xp 5549  df-rel 5550  df-cnv 5551  df-co 5552  df-dm 5553  df-rn 5554  df-res 5555  df-ima 5556  df-iota 6303  df-fun 6346  df-fn 6347  df-f 6348  df-fv 6352  df-ov 7153  df-oprab 7154  df-mpo 7155  df-1st 7685  df-2nd 7686  df-plusf 17854  df-mgm 17855 This theorem is referenced by:  mgmb1mgm1  17868  mndplusf  17932  mgmplusfreseq  44320
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