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Theorem msrfo 36477
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⟶onto𝑆

Proof of Theorem msrfo
StepHypRef Expression
1 msrfo.p . . . . 5 𝑃 = (mPreSt‘𝑇)
2 mstaval.r . . . . 5 𝑅 = (mStRed‘𝑇)
31, 2msrf 36473 . . . 4 𝑅:𝑃⟶𝑃
4 ffn 6728 . . . 4 (𝑅:𝑃⟶𝑃 → 𝑅 Fn 𝑃)
53, 4ax-mp 5 . . 3 𝑅 Fn 𝑃
6 dffn4 6821 . . 3 (𝑅 Fn 𝑃 ↔ 𝑅:𝑃⟶ontoran 𝑅)
75, 6mpbi 233 . 2 𝑅:𝑃⟶ontoran 𝑅
8 mstaval.s . . . 4 𝑆 = (mStat‘𝑇)
92, 8mstaval 36475 . . 3 𝑆 = ran 𝑅
10 foeq3 6813 . . 3 (𝑆 = ran 𝑅 → (𝑅:𝑃⟶onto𝑆 ↔ 𝑅:𝑃⟶ontoran 𝑅))
119, 10ax-mp 5 . 2 (𝑅:𝑃⟶onto𝑆 ↔ 𝑅:𝑃⟶ontoran 𝑅)
127, 11mpbir 234 1 𝑅:𝑃⟶onto𝑆
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   ↔ wb 209   = wceq 1570  ran crn 5656   Fn wfn 6550  ⟶wf 6551  ⟶ontowfo 6553  ‘cfv 6555  mPreStcmpst 36404  mStRedcmsr 36405  mStatcmsta 36406
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-10 2180  ax-11 2197  ax-12 2216  ax-ext 2735  ax-rep 5235  ax-sep 5252  ax-nul 5263  ax-pow 5331  ax-pr 5395  ax-un 7772
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2102  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2839  df-nfc 2913  df-ne 2960  df-ral 3081  df-rex 3091  df-reu 3370  df-rab 3417  df-v 3456  df-sbc 3743  df-csb 3852  df-ss 3901  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-op 4839  df-ot 4862  df-uni 4871  df-iun 4956  df-br 5107  df-opab 5171  df-mpt 5190  df-id 5550  df-xp 5661  df-rel 5662  df-cnv 5663  df-co 5664  df-dm 5665  df-rn 5666  df-res 5667  df-ima 5668  df-iota 6509  df-fun 6557  df-fn 6558  df-f 6559  df-f1 6560  df-fo 6561  df-f1o 6562  df-fv 6563  df-1st 8022  df-2nd 8023  df-mpst 36424  df-msr 36425  df-msta 36426
This theorem is used by: (None)
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