日本数学会・2018 年度秋季総合分科会(於:岡山大学)・トポロジー分科会・特別講演 msjmeeting-2018sep-10i001 Diff(S 4 ) ( ) ∗ 1. C ∞ M Diff(M ) C ∞ ([18, 20]) 1.1. Diff(M ) M = S d d ≤ 3 d =1 Diff(S 1 ) ≃ O(2) d =2 Smale Diff(S 2 ) ≃ O(3) ([38]) d =3 Diff(S 3 ) ≃ O(4) (Smale ) Smale Hatcher ([17]) d ≥ 5 ([18]) d =4 ([24, Problem 4.34, 4.126, 4.141]) 1.2 (4 Smale ). Diff(S 4 ) ≃ O(5). Smale topological version: TOP(S 4 ) ≃ O(5) Randall Schweitzer ([35]) Diff(D d ,∂ ) D d Diff(S d ) ≃ O(d + 1) × Diff(D d ,∂ ) 1.2 Diff(D 4 ,∂ ) ≃∗ 1.3 ([43]). Diff(D 4 ,∂ ) ≃∗ 4 Smale 4 Smale Diff(D 4 ,∂ ) ≃ Ω 5 PL(4)/O(4) [7] PL(n) piecewise linear (R n , 0) → (R n , 0) [30, 20] 1.3 1.4. PL(4) ≃ O(4). (cf. [10]) §6 2. 3 3 [33, 34] 2.1. Chern-Simons Witten 3 M L (M ; L) Witten , [44] ([2, 15, 1, 25] etc.) S 3 M 1 ∞ framed ( :17K05252, 26400089) * 690-8504 1060 e-mail: [email protected]
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Di ( S HOMFLY Witten (i){(iii) Feynman (i) K 1;K 2: S 1! R 3 (i) S 1 S 1 R S 1 S 1! S 2 lk( K 1;K 2)! S 2 S 2: S 1 S 1! S 2 ( t 1;t2) = K 2 (t2) K 1 (t1) jK 2 (t2) K 1 (t1)j etc: (i)
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