Theorem mvtss 32802

Description: The set of variable typecodes is a subset of all typecodes. (Contributed by Mario Carneiro, 18-Jul-2016.)

Hypotheses

Ref	Expression
mvtss.f	⊢ 𝐹 = (mVT‘𝑇)
mvtss.k	⊢ 𝐾 = (mTC‘𝑇)

Assertion

Ref	Expression
mvtss	⊢ (𝑇 ∈ mFS → 𝐹 ⊆ 𝐾)

Proof of Theorem mvtss

Step	Hyp	Ref	Expression
1		mvtss.f	. . 3 ⊢ 𝐹 = (mVT‘𝑇)
2		eqid 2823	. . 3 ⊢ (mType‘𝑇) = (mType‘𝑇)
3	1, 2	mvtval 32749	. 2 ⊢ 𝐹 = ran (mType‘𝑇)
4		eqid 2823	. . . 4 ⊢ (mVR‘𝑇) = (mVR‘𝑇)
5		mvtss.k	. . . 4 ⊢ 𝐾 = (mTC‘𝑇)
6	4, 5, 2	mtyf2 32800	. . 3 ⊢ (𝑇 ∈ mFS → (mType‘𝑇):(mVR‘𝑇)⟶𝐾)
7	6	frnd 6523	. 2 ⊢ (𝑇 ∈ mFS → ran (mType‘𝑇) ⊆ 𝐾)
8	3, 7	eqsstrid 4017	1 ⊢ (𝑇 ∈ mFS → 𝐹 ⊆ 𝐾)

Syntax hints:   → wi 4   = wceq 1537   ∈ wcel 2114   ⊆ wss 3938  ran crn 5558  ‘cfv 6357  mVRcmvar 32710  mTypecmty 32711  mVTcmvt 32712  mTCcmtc 32713  mFScmfs 32725

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2795  ax-sep 5205  ax-nul 5212  ax-pow 5268  ax-pr 5332  ax-un 7463

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2802  df-cleq 2816  df-clel 2895  df-nfc 2965  df-ral 3145  df-rex 3146  df-rab 3149  df-v 3498  df-sbc 3775  df-dif 3941  df-un 3943  df-in 3945  df-ss 3954  df-nul 4294  df-if 4470  df-sn 4570  df-pr 4572  df-op 4576  df-uni 4841  df-br 5069  df-opab 5131  df-mpt 5149  df-id 5462  df-xp 5563  df-rel 5564  df-cnv 5565  df-co 5566  df-dm 5567  df-rn 5568  df-res 5569  df-ima 5570  df-iota 6316  df-fun 6359  df-fn 6360  df-f 6361  df-fv 6365  df-mvt 32734  df-mfs 32745

This theorem is referenced by: (None)