Theorem msrfo 31443

Description: The reduct of a pre-statement is a statement. (Contributed by Mario Carneiro, 18-Jul-2016.)

Hypotheses

Ref	Expression
mstaval.r	⊢ 𝑅 = (mStRed‘𝑇)
mstaval.s	⊢ 𝑆 = (mStat‘𝑇)
msrfo.p	⊢ 𝑃 = (mPreSt‘𝑇)

Assertion

Ref	Expression
msrfo	⊢ 𝑅:𝑃–onto→𝑆

Proof of Theorem msrfo

Step	Hyp	Ref	Expression
1		msrfo.p	. . . . 5 ⊢ 𝑃 = (mPreSt‘𝑇)
2		mstaval.r	. . . . 5 ⊢ 𝑅 = (mStRed‘𝑇)
3	1, 2	msrf 31439	. . . 4 ⊢ 𝑅:𝑃⟶𝑃
4		ffn 6045	. . . 4 ⊢ (𝑅:𝑃⟶𝑃 → 𝑅 Fn 𝑃)
5	3, 4	ax-mp 5	. . 3 ⊢ 𝑅 Fn 𝑃
6		dffn4 6121	. . 3 ⊢ (𝑅 Fn 𝑃 ↔ 𝑅:𝑃–onto→ran 𝑅)
7	5, 6	mpbi 220	. 2 ⊢ 𝑅:𝑃–onto→ran 𝑅
8		mstaval.s	. . . 4 ⊢ 𝑆 = (mStat‘𝑇)
9	2, 8	mstaval 31441	. . 3 ⊢ 𝑆 = ran 𝑅
10		foeq3 6113	. . 3 ⊢ (𝑆 = ran 𝑅 → (𝑅:𝑃–onto→𝑆 ↔ 𝑅:𝑃–onto→ran 𝑅))
11	9, 10	ax-mp 5	. 2 ⊢ (𝑅:𝑃–onto→𝑆 ↔ 𝑅:𝑃–onto→ran 𝑅)
12	7, 11	mpbir 221	1 ⊢ 𝑅:𝑃–onto→𝑆

Syntax hints:   ↔ wb 196   = wceq 1483  ran crn 5115   Fn wfn 5883  ⟶wf 5884  –onto→wfo 5886  ‘cfv 5888  mPreStcmpst 31370  mStRedcmsr 31371  mStatcmsta 31372

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-fal 1489  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-reu 2919  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-ot 4186  df-uni 4437  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-1st 7168  df-2nd 7169  df-mpst 31390  df-msr 31391  df-msta 31392

This theorem is referenced by: (None)