| D2 | E | C2(z) | C2(y) | C2(x) | 线性 / 转动linear, rotations | 二次quadratic |
|---|---|---|---|---|---|---|
| A | 1 | 1 | 1 | 1 | x², y², z² | |
| B1 | 1 | 1 | −1 | −1 | z, Rz | xy |
| B2 | 1 | −1 | 1 | −1 | y, Ry | xz |
| B3 | 1 | −1 | −1 | 1 | x, Rx | yz |
| 阶 hOrder h | 4 |
|---|---|
| 类数Classes | 4 |
| 所属族Family | Dn |
| 代表分子Examples | 扭烷 twistanetwistane |
约化可约表示Reduce a representation
输入可约表示在各类上的特征标，按约化公式 \(n_i = \frac{1}{h}\sum_R g_R\,\chi(R)\,\chi_i(R)^{*}\) 求出各不可约表示出现的次数。
Enter the characters of a reducible representation; the reduction formula gives how many times each irreducible representation occurs.