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Theorem hfsval 22339
Description: Value of the sum of two Hilbert space functionals. (Contributed by NM, 23-May-2006.) (Revised by Mario Carneiro, 16-Nov-2013.) (New usage is discouraged.)
Assertion
Ref Expression
hfsval  |-  ( ( S : ~H --> CC  /\  T : ~H --> CC  /\  A  e.  ~H )  ->  ( ( S  +fn  T ) `  A )  =  ( ( S `
 A )  +  ( T `  A
) ) )

Proof of Theorem hfsval
Dummy variable  x is distinct from all other variables.
StepHypRef Expression
1 hfsmval 22334 . . . 4  |-  ( ( S : ~H --> CC  /\  T : ~H --> CC )  ->  ( S  +fn  T )  =  ( x  e.  ~H  |->  ( ( S `  x )  +  ( T `  x ) ) ) )
21fveq1d 5543 . . 3  |-  ( ( S : ~H --> CC  /\  T : ~H --> CC )  ->  ( ( S 
+fn  T ) `  A )  =  ( ( x  e.  ~H  |->  ( ( S `  x )  +  ( T `  x ) ) ) `  A
) )
3 fveq2 5541 . . . . 5  |-  ( x  =  A  ->  ( S `  x )  =  ( S `  A ) )
4 fveq2 5541 . . . . 5  |-  ( x  =  A  ->  ( T `  x )  =  ( T `  A ) )
53, 4oveq12d 5892 . . . 4  |-  ( x  =  A  ->  (
( S `  x
)  +  ( T `
 x ) )  =  ( ( S `
 A )  +  ( T `  A
) ) )
6 eqid 2296 . . . 4  |-  ( x  e.  ~H  |->  ( ( S `  x )  +  ( T `  x ) ) )  =  ( x  e. 
~H  |->  ( ( S `
 x )  +  ( T `  x
) ) )
7 ovex 5899 . . . 4  |-  ( ( S `  A )  +  ( T `  A ) )  e. 
_V
85, 6, 7fvmpt 5618 . . 3  |-  ( A  e.  ~H  ->  (
( x  e.  ~H  |->  ( ( S `  x )  +  ( T `  x ) ) ) `  A
)  =  ( ( S `  A )  +  ( T `  A ) ) )
92, 8sylan9eq 2348 . 2  |-  ( ( ( S : ~H --> CC  /\  T : ~H --> CC )  /\  A  e. 
~H )  ->  (
( S  +fn  T
) `  A )  =  ( ( S `
 A )  +  ( T `  A
) ) )
1093impa 1146 1  |-  ( ( S : ~H --> CC  /\  T : ~H --> CC  /\  A  e.  ~H )  ->  ( ( S  +fn  T ) `  A )  =  ( ( S `
 A )  +  ( T `  A
) ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 358    /\ w3a 934    = wceq 1632    e. wcel 1696    e. cmpt 4093   -->wf 5267   ` cfv 5271  (class class class)co 5874   CCcc 8751    + caddc 8756   ~Hchil 21515    +fn chfs 21537
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-rep 4147  ax-sep 4157  ax-nul 4165  ax-pow 4204  ax-pr 4230  ax-un 4528  ax-cnex 8809  ax-hilex 21595
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-reu 2563  df-rab 2565  df-v 2803  df-sbc 3005  df-csb 3095  df-dif 3168  df-un 3170  df-in 3172  df-ss 3179  df-nul 3469  df-if 3579  df-pw 3640  df-sn 3659  df-pr 3660  df-op 3662  df-uni 3844  df-iun 3923  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-f1 5276  df-fo 5277  df-f1o 5278  df-fv 5279  df-ov 5877  df-oprab 5878  df-mpt2 5879  df-map 6790  df-hfsum 22329
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