Mercurial > hg > Members > kono > Proof > galois
changeset 287:1874c573682f
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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Sun, 29 Jan 2023 16:50:56 +0900 |
parents | f257ab4afa51 |
children | d08663bae245 |
files | src/FundamentalHomorphism.agda |
diffstat | 1 files changed, 10 insertions(+), 16 deletions(-) [+] |
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--- a/src/FundamentalHomorphism.agda Sun Jan 29 16:08:09 2023 +0900 +++ b/src/FundamentalHomorphism.agda Sun Jan 29 16:50:56 2023 +0900 @@ -108,23 +108,17 @@ fa f = neg ( λ a b → record { factor = n (f ( a ∙ b ⁻¹)) ; is-factor = fa01 a b } ) where fa01 : (a b : Carrier ) → b ∙ ⟦ n (f ( a ∙ b ⁻¹)) ⟧ ≈ a fa01 a b = begin - b ∙ ⟦ n (f ( a ∙ b ⁻¹)) ⟧ ≈⟨ ? ⟩ - b ∙ (ε ∙ ⟦ n (f ( a ∙ b ⁻¹)) ⟧ ) ≈⟨ ? ⟩ - b ∙ (( f02 ⁻¹ ∙ f02 ) ∙ ⟦ n (f ( a ∙ b ⁻¹)) ⟧ ) ≈⟨ ? ⟩ - b ∙ ( f02 ⁻¹ ∙ ( f02 ∙ ⟦ n (f ( a ∙ b ⁻¹)) ⟧ )) ≈⟨ cdr ( cdr ( an.aN=x (is-an (f ( a ∙ b ⁻¹)) (f05 ∙ a) ))) ⟩ - b ∙ (f02 ⁻¹ ∙ ( f05 ∙ a)) ≈⟨ ? ⟩ - b ∙ ( (f02 ⁻¹ ∙ f02 ) ∙ b ⁻¹) ∙ a ≈⟨ ? ⟩ - b ∙ ( ε ∙ b ⁻¹) ∙ a ≈⟨ ? ⟩ - b ∙ ( b ⁻¹ ∙ a ) ≈⟨ ? ⟩ - (b ∙ b ⁻¹ ) ∙ a ≈⟨ ? ⟩ - ε ∙ a ≈⟨ ? ⟩ + b ∙ ⟦ n (f ( a ∙ b ⁻¹)) ⟧ ≈⟨ ? ⟩ + b ∙ ( ( b ⁻¹ ∙ ⟦ b ⟧ ) ∙ ( an.a (is-an (f ( a ∙ b ⁻¹) ) (a ∙ ⟦ b ⁻¹ ⟧ ) ) ∙ ⟦ n (f ( a ∙ b ⁻¹)) ⟧)) ≈⟨ cdr ( cdr (f06 ( a ∙ b ⁻¹) (a ∙ ⟦ b ⁻¹ ⟧ ))) ⟩ + b ∙ ( ( b ⁻¹ ∙ ⟦ b ⟧ ) ∙ (a ∙ ⟦ b ⁻¹ ⟧ )) ≈⟨ ? ⟩ + ⟦ b ⟧ ∙ ( a ∙ ⟦ b ⁻¹ ⟧ ) ≈⟨ ? ⟩ a ∎ where - f05 : Carrier - f05 = a ∙ b ⁻¹ - f02 : Carrier - f02 = an.a (is-an (f (a ∙ b ⁻¹)) (f05 ∙ a)) - f04 : f02 ∙ b ⁻¹ ≈ f05 - f04 = ? + f06 : (x y : Carrier ) → an.a (is-an (f x) y ) ∙ ⟦ n (f x) ⟧ ≈ y + f06 x y = an.aN=x (is-an (f x) y) + f07 : (y : Carrier ) → an.a (is-an (f ( a ∙ b ⁻¹)) y ) ∙ ⟦ n (f ( a ∙ b ⁻¹)) ⟧ ≈ y + f07 y = an.aN=x (is-an (f ( a ∙ b ⁻¹)) y) + f08 : ( b ⁻¹ ∙ ⟦ b ⟧ ) ∙ ( an.a (is-an (f ( a ∙ b ⁻¹) ) (a ∙ ⟦ b ⁻¹ ⟧ ))) ≈ ε + f08 = ? _/_ : (A : Group c c ) (N : NormalSubGroup A ) → Group c c _/_ A N = record {