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Theorem plusfvalg 13382
Description: The group addition operation as a function. (Contributed by Mario Carneiro, 14-Aug-2015.)
Hypotheses
Ref Expression
plusffval.1 𝐵 = (Base‘𝐺)
plusffval.2 + = (+g𝐺)
plusffval.3 = (+𝑓𝐺)
Assertion
Ref Expression
plusfvalg ((𝐺𝑉𝑋𝐵𝑌𝐵) → (𝑋 𝑌) = (𝑋 + 𝑌))

Proof of Theorem plusfvalg
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 plusffval.1 . . . 4 𝐵 = (Base‘𝐺)
2 plusffval.2 . . . 4 + = (+g𝐺)
3 plusffval.3 . . . 4 = (+𝑓𝐺)
41, 2, 3plusffvalg 13381 . . 3 (𝐺𝑉 = (𝑥𝐵, 𝑦𝐵 ↦ (𝑥 + 𝑦)))
543ad2ant1 1042 . 2 ((𝐺𝑉𝑋𝐵𝑌𝐵) → = (𝑥𝐵, 𝑦𝐵 ↦ (𝑥 + 𝑦)))
6 oveq12 6003 . . 3 ((𝑥 = 𝑋𝑦 = 𝑌) → (𝑥 + 𝑦) = (𝑋 + 𝑌))
76adantl 277 . 2 (((𝐺𝑉𝑋𝐵𝑌𝐵) ∧ (𝑥 = 𝑋𝑦 = 𝑌)) → (𝑥 + 𝑦) = (𝑋 + 𝑌))
8 simp2 1022 . 2 ((𝐺𝑉𝑋𝐵𝑌𝐵) → 𝑋𝐵)
9 simp3 1023 . 2 ((𝐺𝑉𝑋𝐵𝑌𝐵) → 𝑌𝐵)
10 plusgslid 13131 . . . . . 6 (+g = Slot (+g‘ndx) ∧ (+g‘ndx) ∈ ℕ)
1110slotex 13045 . . . . 5 (𝐺𝑉 → (+g𝐺) ∈ V)
122, 11eqeltrid 2316 . . . 4 (𝐺𝑉+ ∈ V)
13123ad2ant1 1042 . . 3 ((𝐺𝑉𝑋𝐵𝑌𝐵) → + ∈ V)
14 ovexg 6028 . . 3 ((𝑋𝐵+ ∈ V ∧ 𝑌𝐵) → (𝑋 + 𝑌) ∈ V)
158, 13, 9, 14syl3anc 1271 . 2 ((𝐺𝑉𝑋𝐵𝑌𝐵) → (𝑋 + 𝑌) ∈ V)
165, 7, 8, 9, 15ovmpod 6123 1 ((𝐺𝑉𝑋𝐵𝑌𝐵) → (𝑋 𝑌) = (𝑋 + 𝑌))
Colors of variables: wff set class
Syntax hints:  wi 4  wa 104  w3a 1002   = wceq 1395  wcel 2200  Vcvv 2799  cfv 5314  (class class class)co 5994  cmpo 5996  Basecbs 13018  +gcplusg 13096  +𝑓cplusf 13372
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 617  ax-in2 618  ax-io 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-13 2202  ax-14 2203  ax-ext 2211  ax-coll 4198  ax-sep 4201  ax-pow 4257  ax-pr 4292  ax-un 4521  ax-setind 4626  ax-cnex 8078  ax-resscn 8079  ax-1re 8081  ax-addrcl 8084
This theorem depends on definitions:  df-bi 117  df-3an 1004  df-tru 1398  df-fal 1401  df-nf 1507  df-sb 1809  df-eu 2080  df-mo 2081  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-ne 2401  df-ral 2513  df-rex 2514  df-reu 2515  df-rab 2517  df-v 2801  df-sbc 3029  df-csb 3125  df-dif 3199  df-un 3201  df-in 3203  df-ss 3210  df-pw 3651  df-sn 3672  df-pr 3673  df-op 3675  df-uni 3888  df-int 3923  df-iun 3966  df-br 4083  df-opab 4145  df-mpt 4146  df-id 4381  df-xp 4722  df-rel 4723  df-cnv 4724  df-co 4725  df-dm 4726  df-rn 4727  df-res 4728  df-ima 4729  df-iota 5274  df-fun 5316  df-fn 5317  df-f 5318  df-f1 5319  df-fo 5320  df-f1o 5321  df-fv 5322  df-ov 5997  df-oprab 5998  df-mpo 5999  df-1st 6276  df-2nd 6277  df-inn 9099  df-2 9157  df-ndx 13021  df-slot 13022  df-base 13024  df-plusg 13109  df-plusf 13374
This theorem is referenced by:  mndpfo  13457  lmodfopne  14275
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