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Description: Univariate polynomial evaluation maps (multiplicative) group sums to group sums. (Contributed by AV, 15-Sep-2019)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | evl1gsumadd.q | |- Q = ( eval1 ` R ) |
|
| evl1gsumadd.k | |- K = ( Base ` R ) |
||
| evl1gsumadd.w | |- W = ( Poly1 ` R ) |
||
| evl1gsumadd.p | |- P = ( R ^s K ) |
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| evl1gsumadd.b | |- B = ( Base ` W ) |
||
| evl1gsumadd.r | |- ( ph -> R e. CRing ) |
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| evl1gsumadd.y | |- ( ( ph /\ x e. N ) -> Y e. B ) |
||
| evl1gsumadd.n | |- ( ph -> N C_ NN0 ) |
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| evl1gsummul.1 | |- .1. = ( 1r ` W ) |
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| evl1gsummul.g | |- G = ( mulGrp ` W ) |
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| evl1gsummul.h | |- H = ( mulGrp ` P ) |
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| evl1gsummul.f | |- ( ph -> ( x e. N |-> Y ) finSupp .1. ) |
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| Assertion | evl1gsummul | |- ( ph -> ( Q ` ( G gsum ( x e. N |-> Y ) ) ) = ( H gsum ( x e. N |-> ( Q ` Y ) ) ) ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | evl1gsumadd.q | |- Q = ( eval1 ` R ) |
|
| 2 | evl1gsumadd.k | |- K = ( Base ` R ) |
|
| 3 | evl1gsumadd.w | |- W = ( Poly1 ` R ) |
|
| 4 | evl1gsumadd.p | |- P = ( R ^s K ) |
|
| 5 | evl1gsumadd.b | |- B = ( Base ` W ) |
|
| 6 | evl1gsumadd.r | |- ( ph -> R e. CRing ) |
|
| 7 | evl1gsumadd.y | |- ( ( ph /\ x e. N ) -> Y e. B ) |
|
| 8 | evl1gsumadd.n | |- ( ph -> N C_ NN0 ) |
|
| 9 | evl1gsummul.1 | |- .1. = ( 1r ` W ) |
|
| 10 | evl1gsummul.g | |- G = ( mulGrp ` W ) |
|
| 11 | evl1gsummul.h | |- H = ( mulGrp ` P ) |
|
| 12 | evl1gsummul.f | |- ( ph -> ( x e. N |-> Y ) finSupp .1. ) |
|
| 13 | 10 5 | mgpbas | |- B = ( Base ` G ) |
| 14 | 10 9 | ringidval | |- .1. = ( 0g ` G ) |
| 15 | 3 | ply1crng | |- ( R e. CRing -> W e. CRing ) |
| 16 | 10 | crngmgp | |- ( W e. CRing -> G e. CMnd ) |
| 17 | 6 15 16 | 3syl | |- ( ph -> G e. CMnd ) |
| 18 | crngring | |- ( R e. CRing -> R e. Ring ) |
|
| 19 | 6 18 | syl | |- ( ph -> R e. Ring ) |
| 20 | 2 | fvexi | |- K e. _V |
| 21 | 19 20 | jctir | |- ( ph -> ( R e. Ring /\ K e. _V ) ) |
| 22 | 4 | pwsring | |- ( ( R e. Ring /\ K e. _V ) -> P e. Ring ) |
| 23 | 11 | ringmgp | |- ( P e. Ring -> H e. Mnd ) |
| 24 | 21 22 23 | 3syl | |- ( ph -> H e. Mnd ) |
| 25 | nn0ex | |- NN0 e. _V |
|
| 26 | 25 | a1i | |- ( ph -> NN0 e. _V ) |
| 27 | 26 8 | ssexd | |- ( ph -> N e. _V ) |
| 28 | 1 3 4 2 | evl1rhm | |- ( R e. CRing -> Q e. ( W RingHom P ) ) |
| 29 | 10 11 | rhmmhm | |- ( Q e. ( W RingHom P ) -> Q e. ( G MndHom H ) ) |
| 30 | 6 28 29 | 3syl | |- ( ph -> Q e. ( G MndHom H ) ) |
| 31 | 13 14 17 24 27 30 7 12 | gsummptmhm | |- ( ph -> ( H gsum ( x e. N |-> ( Q ` Y ) ) ) = ( Q ` ( G gsum ( x e. N |-> Y ) ) ) ) |
| 32 | 31 | eqcomd | |- ( ph -> ( Q ` ( G gsum ( x e. N |-> Y ) ) ) = ( H gsum ( x e. N |-> ( Q ` Y ) ) ) ) |