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Description: Subring evaluation of a scaled monomial. (Contributed by Thierry Arnoux, 10-Jan-2026)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | evls1monply1.1 | |- Q = ( S evalSub1 R ) |
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| evls1monply1.2 | |- K = ( Base ` S ) |
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| evls1monply1.3 | |- W = ( Poly1 ` U ) |
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| evls1monply1.4 | |- U = ( S |`s R ) |
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| evls1monply1.5 | |- X = ( var1 ` U ) |
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| evls1monply1.6 | |- .^ = ( .g ` ( mulGrp ` W ) ) |
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| evls1monply1.7 | |- ./\ = ( .g ` ( mulGrp ` S ) ) |
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| evls1monply1.8 | |- .* = ( .s ` W ) |
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| evls1monply1.9 | |- .x. = ( .r ` S ) |
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| evls1monply1.10 | |- ( ph -> S e. CRing ) |
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| evls1monply1.11 | |- ( ph -> R e. ( SubRing ` S ) ) |
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| evls1monply1.12 | |- ( ph -> A e. R ) |
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| evls1monply1.13 | |- ( ph -> N e. NN0 ) |
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| evls1monply1.14 | |- ( ph -> Y e. K ) |
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| Assertion | evls1monply1 | |- ( ph -> ( ( Q ` ( A .* ( N .^ X ) ) ) ` Y ) = ( A .x. ( N ./\ Y ) ) ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | evls1monply1.1 | |- Q = ( S evalSub1 R ) |
|
| 2 | evls1monply1.2 | |- K = ( Base ` S ) |
|
| 3 | evls1monply1.3 | |- W = ( Poly1 ` U ) |
|
| 4 | evls1monply1.4 | |- U = ( S |`s R ) |
|
| 5 | evls1monply1.5 | |- X = ( var1 ` U ) |
|
| 6 | evls1monply1.6 | |- .^ = ( .g ` ( mulGrp ` W ) ) |
|
| 7 | evls1monply1.7 | |- ./\ = ( .g ` ( mulGrp ` S ) ) |
|
| 8 | evls1monply1.8 | |- .* = ( .s ` W ) |
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| 9 | evls1monply1.9 | |- .x. = ( .r ` S ) |
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| 10 | evls1monply1.10 | |- ( ph -> S e. CRing ) |
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| 11 | evls1monply1.11 | |- ( ph -> R e. ( SubRing ` S ) ) |
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| 12 | evls1monply1.12 | |- ( ph -> A e. R ) |
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| 13 | evls1monply1.13 | |- ( ph -> N e. NN0 ) |
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| 14 | evls1monply1.14 | |- ( ph -> Y e. K ) |
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| 15 | eqid | |- ( Base ` W ) = ( Base ` W ) |
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| 16 | eqid | |- ( mulGrp ` W ) = ( mulGrp ` W ) |
|
| 17 | 16 15 | mgpbas | |- ( Base ` W ) = ( Base ` ( mulGrp ` W ) ) |
| 18 | 4 | subrgring | |- ( R e. ( SubRing ` S ) -> U e. Ring ) |
| 19 | 11 18 | syl | |- ( ph -> U e. Ring ) |
| 20 | 3 | ply1ring | |- ( U e. Ring -> W e. Ring ) |
| 21 | 16 | ringmgp | |- ( W e. Ring -> ( mulGrp ` W ) e. Mnd ) |
| 22 | 19 20 21 | 3syl | |- ( ph -> ( mulGrp ` W ) e. Mnd ) |
| 23 | 5 3 15 | vr1cl | |- ( U e. Ring -> X e. ( Base ` W ) ) |
| 24 | 19 23 | syl | |- ( ph -> X e. ( Base ` W ) ) |
| 25 | 17 6 22 13 24 | mulgnn0cld | |- ( ph -> ( N .^ X ) e. ( Base ` W ) ) |
| 26 | 1 2 3 4 15 8 9 10 11 12 25 14 | evls1vsca | |- ( ph -> ( ( Q ` ( A .* ( N .^ X ) ) ) ` Y ) = ( A .x. ( ( Q ` ( N .^ X ) ) ` Y ) ) ) |
| 27 | 1 4 3 5 2 6 7 10 11 13 14 | evls1varpwval | |- ( ph -> ( ( Q ` ( N .^ X ) ) ` Y ) = ( N ./\ Y ) ) |
| 28 | 27 | oveq2d | |- ( ph -> ( A .x. ( ( Q ` ( N .^ X ) ) ` Y ) ) = ( A .x. ( N ./\ Y ) ) ) |
| 29 | 26 28 | eqtrd | |- ( ph -> ( ( Q ` ( A .* ( N .^ X ) ) ) ` Y ) = ( A .x. ( N ./\ Y ) ) ) |