, , , . , , 1. , , . , ( 1) . , 2 v 2 σ v. 2 2 v. - . σ v +1,
(4.26) | |
(4.26) | |
(4.26) | |
(4.26) |
:
2 | σ v | (4.27) | |||
1 | |||||
1 | -1 | -1 |
(-1) σ v
(4.28) | |
(4.28) | |
(4.28) | |
(4.28) |
:
2 | σ v | (4.29) | |||
2 | -1 | -1 | |||
2 | -1 | -1 |
, . , , , . , . , . , , , , 1
( ) . , [χ(Cn)] n χ(), . . . . n, n , , , 1 n/ 2 1. +1, , , 1. [exp(2 πi/n)] jk [exp(-2 πi/n)] jk, j . ( 0, . . . , , 0 n/2 ). , . , 3 :
|
|
3 | 3 | (4.30) | ||
1 | e2πi/3 | e4πi/3 | ||
e-2πi/3 | e-4πi/3 |
(4.11), , 4π/3, 2400, 2π/3, 200. :
3 | |||||
1 | cos2π/3 + isin2π/3 | cos4π/3 + isin4π/3 | (4.31) | ||
2 | cos2π/3 isin2π/3 | cos4π/3 isin4π/3 | (4.31) | ||
1 + 2 | 2cos2π/3 | 2cos4π/3 | (4.31) | ||
-1 | -1 | (4.31) |