Theorem mtyf2 33513

Description: The type function maps variables to typecodes. (Contributed by Mario Carneiro, 18-Jul-2016.)

Hypotheses

Ref	Expression
mtyf2.v	⊢ 𝑉 = (mVR‘𝑇)
mvtf2.k	⊢ 𝐾 = (mTC‘𝑇)
mtyf2.y	⊢ 𝑌 = (mType‘𝑇)

Assertion

Ref	Expression
mtyf2	⊢ (𝑇 ∈ mFS → 𝑌:𝑉⟶𝐾)

Proof of Theorem mtyf2

Dummy variable 𝑣 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		eqid 2738	. . . 4 ⊢ (mCN‘𝑇) = (mCN‘𝑇)
2		mtyf2.v	. . . 4 ⊢ 𝑉 = (mVR‘𝑇)
3		mtyf2.y	. . . 4 ⊢ 𝑌 = (mType‘𝑇)
4		eqid 2738	. . . 4 ⊢ (mVT‘𝑇) = (mVT‘𝑇)
5		mvtf2.k	. . . 4 ⊢ 𝐾 = (mTC‘𝑇)
6		eqid 2738	. . . 4 ⊢ (mAx‘𝑇) = (mAx‘𝑇)
7		eqid 2738	. . . 4 ⊢ (mStat‘𝑇) = (mStat‘𝑇)
8	1, 2, 3, 4, 5, 6, 7	ismfs 33511	. . 3 ⊢ (𝑇 ∈ mFS → (𝑇 ∈ mFS ↔ ((((mCN‘𝑇) ∩ 𝑉) = ∅ ∧ 𝑌:𝑉⟶𝐾) ∧ ((mAx‘𝑇) ⊆ (mStat‘𝑇) ∧ ∀𝑣 ∈ (mVT‘𝑇) ¬ (◡𝑌 “ {𝑣}) ∈ Fin))))
9	8	ibi 266	. 2 ⊢ (𝑇 ∈ mFS → ((((mCN‘𝑇) ∩ 𝑉) = ∅ ∧ 𝑌:𝑉⟶𝐾) ∧ ((mAx‘𝑇) ⊆ (mStat‘𝑇) ∧ ∀𝑣 ∈ (mVT‘𝑇) ¬ (◡𝑌 “ {𝑣}) ∈ Fin)))
10	9	simplrd 767	1 ⊢ (𝑇 ∈ mFS → 𝑌:𝑉⟶𝐾)

Syntax hints:  ¬ wn 3   → wi 4   ∧ wa 396   = wceq 1539   ∈ wcel 2106  ∀wral 3064   ∩ cin 3886   ⊆ wss 3887  ∅c0 4256  {csn 4561  ^◡ccnv 5588   “ cima 5592  ⟶wf 6429  ‘cfv 6433  Fincfn 8733  mCNcmcn 33422  mVRcmvar 33423  mTypecmty 33424  mVTcmvt 33425  mTCcmtc 33426  mAxcmax 33427  mStatcmsta 33437  mFScmfs 33438

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-ext 2709

This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1783  df-sb 2068  df-clab 2716  df-cleq 2730  df-clel 2816  df-ral 3069  df-rab 3073  df-v 3434  df-dif 3890  df-un 3892  df-in 3894  df-ss 3904  df-nul 4257  df-if 4460  df-sn 4562  df-pr 4564  df-op 4568  df-uni 4840  df-br 5075  df-opab 5137  df-rel 5596  df-cnv 5597  df-co 5598  df-dm 5599  df-rn 5600  df-res 5601  df-ima 5602  df-iota 6391  df-fun 6435  df-fn 6436  df-f 6437  df-fv 6441  df-mfs 33458

This theorem is referenced by:  mtyf  33514  mvtss  33515  msubff1  33518  mvhf  33520  msubvrs  33522