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Metamath Proof Explorer

Theorem opsrlmod

Description: Ordered power series form a left module. (Contributed by Stefan O'Rear, 26-Mar-2015)

Ref Expression
Hypotheses opsrring.o 
|- O = ( ( I ordPwSer R ) ` T )
opsrring.i 
|- ( ph -> I e. V )
opsrring.r 
|- ( ph -> R e. Ring )
opsrring.t 
|- ( ph -> T C_ ( I X. I ) )
Assertion opsrlmod 
|- ( ph -> O e. LMod )

Proof

Step Hyp Ref Expression
1 opsrring.o 
 |-  O = ( ( I ordPwSer R ) ` T )
2 opsrring.i 
 |-  ( ph -> I e. V )
3 opsrring.r 
 |-  ( ph -> R e. Ring )
4 opsrring.t 
 |-  ( ph -> T C_ ( I X. I ) )
5 eqid 
 |-  ( I mPwSer R ) = ( I mPwSer R )
6 5 2 3 psrlmod 
 |-  ( ph -> ( I mPwSer R ) e. LMod )
7 eqidd 
 |-  ( ph -> ( Base ` ( I mPwSer R ) ) = ( Base ` ( I mPwSer R ) ) )
8 5 1 4 opsrbas 
 |-  ( ph -> ( Base ` ( I mPwSer R ) ) = ( Base ` O ) )
9 5 1 4 opsrplusg 
 |-  ( ph -> ( +g ` ( I mPwSer R ) ) = ( +g ` O ) )
10 9 oveqdr 
 |-  ( ( ph /\ ( x e. ( Base ` ( I mPwSer R ) ) /\ y e. ( Base ` ( I mPwSer R ) ) ) ) -> ( x ( +g ` ( I mPwSer R ) ) y ) = ( x ( +g ` O ) y ) )
11 5 2 3 psrsca 
 |-  ( ph -> R = ( Scalar ` ( I mPwSer R ) ) )
12 5 1 4 2 3 opsrsca 
 |-  ( ph -> R = ( Scalar ` O ) )
13 eqid 
 |-  ( Base ` R ) = ( Base ` R )
14 5 1 4 opsrvsca 
 |-  ( ph -> ( .s ` ( I mPwSer R ) ) = ( .s ` O ) )
15 14 oveqdr 
 |-  ( ( ph /\ ( x e. ( Base ` R ) /\ y e. ( Base ` ( I mPwSer R ) ) ) ) -> ( x ( .s ` ( I mPwSer R ) ) y ) = ( x ( .s ` O ) y ) )
16 7 8 10 11 12 13 15 lmodpropd 
 |-  ( ph -> ( ( I mPwSer R ) e. LMod <-> O e. LMod ) )
17 6 16 mpbid 
 |-  ( ph -> O e. LMod )