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Theorem coda 25832
Description:  (
cod_ `  T ) is a mapping from the morphisms of  T to the objects of  T. (Contributed by FL, 26-Oct-2007.)
Hypotheses
Ref Expression
alg.1  |-  M  =  dom  D
alg.3  |-  D  =  ( dom_ `  T
)
alg.2  |-  O  =  dom  J
alg.5  |-  J  =  ( id_ `  T
)
alg.4  |-  C  =  ( cod_ `  T
)
Assertion
Ref Expression
coda  |-  ( T  e.  Alg  ->  C : M --> O )

Proof of Theorem coda
StepHypRef Expression
1 alg.3 . . . 4  |-  D  =  ( dom_ `  T
)
2 alg.4 . . . 4  |-  C  =  ( cod_ `  T
)
3 alg.5 . . . 4  |-  J  =  ( id_ `  T
)
4 eqid 2296 . . . 4  |-  ( o_
`  T )  =  ( o_ `  T
)
5 alg.1 . . . 4  |-  M  =  dom  D
6 alg.2 . . . 4  |-  O  =  dom  J
71, 2, 3, 4, 5, 6algi 25830 . . 3  |-  ( T  e.  Alg  ->  (
( D : M --> O  /\  C : M --> O  /\  J : O --> M )  /\  ( Fun  ( o_ `  T
)  /\  dom  ( o_
`  T )  C_  ( M  X.  M
)  /\  ran  ( o_
`  T )  C_  M ) ) )
87simpld 445 . 2  |-  ( T  e.  Alg  ->  ( D : M --> O  /\  C : M --> O  /\  J : O --> M ) )
98simp2d 968 1  |-  ( T  e.  Alg  ->  C : M --> O )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ w3a 934    = wceq 1632    e. wcel 1696    C_ wss 3165    X. cxp 4703   dom cdm 4705   ran crn 4706   Fun wfun 5265   -->wf 5267   ` cfv 5271    Alg calg 25814   dom_cdom_ 25815   cod_ccod_ 25816   id_cid_ 25817   o_co_ 25818
This theorem is referenced by:  dcsda  25836  rcmob  25852  aidm2  25853  dmrngcmp  25854  codc  25869  dualalg  25885  mrdmcd  25897
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1536  ax-5 1547  ax-17 1606  ax-9 1644  ax-8 1661  ax-13 1698  ax-14 1700  ax-6 1715  ax-7 1720  ax-11 1727  ax-12 1878  ax-ext 2277  ax-sep 4157  ax-nul 4165  ax-pow 4204  ax-pr 4230  ax-un 4528
This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-3an 936  df-tru 1310  df-ex 1532  df-nf 1535  df-sb 1639  df-eu 2160  df-mo 2161  df-clab 2283  df-cleq 2289  df-clel 2292  df-nfc 2421  df-ne 2461  df-ral 2561  df-rex 2562  df-rab 2565  df-v 2803  df-sbc 3005  df-dif 3168  df-un 3170  df-in 3172  df-ss 3179  df-nul 3469  df-if 3579  df-sn 3659  df-pr 3660  df-op 3662  df-uni 3844  df-br 4040  df-opab 4094  df-mpt 4095  df-id 4325  df-xp 4711  df-rel 4712  df-cnv 4713  df-co 4714  df-dm 4715  df-rn 4716  df-res 4717  df-ima 4718  df-iota 5235  df-fun 5273  df-fn 5274  df-f 5275  df-fo 5277  df-fv 5279  df-1st 6138  df-2nd 6139  df-alg 25819  df-dom_ 25820  df-cod_ 25821  df-id_ 25822  df-cmpa 25823
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