Character table for the D26d point group

D26d    E        2 S52    2 C26    2 S52^3  2 C13    2 S52^5  2 C26^3  2 S52^7  2 C13^2  2 S52^9  2 C26^5  2 S52^11 2 C13^3  2 S4     2 C26^7  2 S52^15 2 C13^4  2 S52^17 2 C26^9  2 S52^19 2 C13^5  2 S52^21 2 C26^11 2 S52^23 2 C13^6  2 S52^25 C2       26 C2'   26 sd       <R> <p> <—d—> <——f——> <———g———> <————h————> <—————i—————> 
A1      1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000     ... ... ....T ....... ........T ........... ............T
A2      1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000 -1.00000 -1.00000     ..T ... ..... ....... ......... ........... .............
B1      1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000  1.00000 -1.00000     ... ... ..... ....... ......... ........... .............
B2      1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000 -1.00000  1.00000     ... ..T ..... ......T ......... ..........T .............
E1      2.00000  1.98542  1.94188  1.87003  1.77091  1.64597  1.49702  1.32625  1.13613  0.92945  0.70921  0.47863  0.24107  0.00000 -0.24107 -0.47863 -0.70921 -0.92945 -1.13613 -1.32625 -1.49702 -1.64597 -1.77091 -1.87003 -1.94188 -1.98542 -2.00000  0.00000  0.00000     ... TT. ..... ....TT. ......... ........TT. .............
E2      2.00000  1.94188  1.77091  1.49702  1.13613  0.70921  0.24107 -0.24107 -0.70921 -1.13613 -1.49702 -1.77091 -1.94188 -2.00000 -1.94188 -1.77091 -1.49702 -1.13613 -0.70921 -0.24107  0.24107  0.70921  1.13613  1.49702  1.77091  1.94188  2.00000  0.00000  0.00000     ... ... TT... ....... ....TT... ........... ........TT...
E3      2.00000  1.87003  1.49702  0.92945  0.24107 -0.47863 -1.13613 -1.64597 -1.94188 -1.98542 -1.77091 -1.32625 -0.70921  0.00000  0.70921  1.32625  1.77091  1.98542  1.94188  1.64597  1.13613  0.47863 -0.24107 -0.92945 -1.49702 -1.87003 -2.00000  0.00000  0.00000     ... ... ..... TT..... ......... ....TT..... .............
E4      2.00000  1.77091  1.13613  0.24107 -0.70921 -1.49702 -1.94188 -1.94188 -1.49702 -0.70921  0.24107  1.13613  1.77091  2.00000  1.77091  1.13613  0.24107 -0.70921 -1.49702 -1.94188 -1.94188 -1.49702 -0.70921  0.24107  1.13613  1.77091  2.00000  0.00000  0.00000     ... ... ..... ....... TT....... ........... ....TT.......
E5      2.00000  1.64597  0.70921 -0.47863 -1.49702 -1.98542 -1.77091 -0.92945  0.24107  1.32625  1.94188  1.87003  1.13613  0.00000 -1.13613 -1.87003 -1.94188 -1.32625 -0.24107  0.92945  1.77091  1.98542  1.49702  0.47863 -0.70921 -1.64597 -2.00000  0.00000  0.00000     ... ... ..... ....... ......... TT......... .............
E6      2.00000  1.49702  0.24107 -1.13613 -1.94188 -1.77091 -0.70921  0.70921  1.77091  1.94188  1.13613 -0.24107 -1.49702 -2.00000 -1.49702 -0.24107  1.13613  1.94188  1.77091  0.70921 -0.70921 -1.77091 -1.94188 -1.13613  0.24107  1.49702  2.00000  0.00000  0.00000     ... ... ..... ....... ......... ........... TT...........
E7      2.00000  1.32625 -0.24107 -1.64597 -1.94188 -0.92945  0.70921  1.87003  1.77091  0.47863 -1.13613 -1.98542 -1.49702  0.00000  1.49702  1.98542  1.13613 -0.47863 -1.77091 -1.87003 -0.70921  0.92945  1.94188  1.64597  0.24107 -1.32625 -2.00000  0.00000  0.00000     ... ... ..... ....... ......... ........... .............
E8      2.00000  1.13613 -0.70921 -1.94188 -1.49702  0.24107  1.77091  1.77091  0.24107 -1.49702 -1.94188 -0.70921  1.13613  2.00000  1.13613 -0.70921 -1.94188 -1.49702  0.24107  1.77091  1.77091  0.24107 -1.49702 -1.94188 -0.70921  1.13613  2.00000  0.00000  0.00000     ... ... ..... ....... ......... ........... .............
E9      2.00000  0.92945 -1.13613 -1.98542 -0.70921  1.32625  1.94188  0.47863 -1.49702 -1.87003 -0.24107  1.64597  1.77091  0.00000 -1.77091 -1.64597  0.24107  1.87003  1.49702 -0.47863 -1.94188 -1.32625  0.70921  1.98542  1.13613 -0.92945 -2.00000  0.00000  0.00000     ... ... ..... ....... ......... ........... .............
E10     2.00000  0.70921 -1.49702 -1.77091  0.24107  1.94188  1.13613 -1.13613 -1.94188 -0.24107  1.77091  1.49702 -0.70921 -2.00000 -0.70921  1.49702  1.77091 -0.24107 -1.94188 -1.13613  1.13613  1.94188  0.24107 -1.77091 -1.49702  0.70921  2.00000  0.00000  0.00000     ... ... ..... ....... ......... ........... .............
E11     2.00000  0.47863 -1.77091 -1.32625  1.13613  1.87003 -0.24107 -1.98542 -0.70921  1.64597  1.49702 -0.92945 -1.94188  0.00000  1.94188  0.92945 -1.49702 -1.64597  0.70921  1.98542  0.24107 -1.87003 -1.13613  1.32625  1.77091 -0.47863 -2.00000  0.00000  0.00000     ... ... ..... ....... ......... ........... .............
E12     2.00000  0.24107 -1.94188 -0.70921  1.77091  1.13613 -1.49702 -1.49702  1.13613  1.77091 -0.70921 -1.94188  0.24107  2.00000  0.24107 -1.94188 -0.70921  1.77091  1.13613 -1.49702 -1.49702  1.13613  1.77091 -0.70921 -1.94188  0.24107  2.00000  0.00000  0.00000     ... ... ..... ....... ......... ........... .............
E13     2.00000  0.00000 -2.00000  0.00000  2.00000  0.00000 -2.00000  0.00000  2.00000  0.00000 -2.00000  0.00000  2.00000  0.00000 -2.00000  0.00000  2.00000  0.00000 -2.00000  0.00000  2.00000  0.00000 -2.00000  0.00000  2.00000  0.00000 -2.00000  0.00000  0.00000     ... ... ..... ....... ......... ........... .............
E14     2.00000 -0.24107 -1.94188  0.70921  1.77091 -1.13613 -1.49702  1.49702  1.13613 -1.77091 -0.70921  1.94188  0.24107 -2.00000  0.24107  1.94188 -0.70921 -1.77091  1.13613  1.49702 -1.49702 -1.13613  1.77091  0.70921 -1.94188 -0.24107  2.00000  0.00000  0.00000     ... ... ..... ....... ......... ........... .............
E15     2.00000 -0.47863 -1.77091  1.32625  1.13613 -1.87003 -0.24107  1.98542 -0.70921 -1.64597  1.49702  0.92945 -1.94188  0.00000  1.94188 -0.92945 -1.49702  1.64597  0.70921 -1.98542  0.24107  1.87003 -1.13613 -1.32625  1.77091  0.47863 -2.00000  0.00000  0.00000     ... ... ..... ....... ......... ........... .............
E16     2.00000 -0.70921 -1.49702  1.77091  0.24107 -1.94188  1.13613  1.13613 -1.94188  0.24107  1.77091 -1.49702 -0.70921  2.00000 -0.70921 -1.49702  1.77091  0.24107 -1.94188  1.13613  1.13613 -1.94188  0.24107  1.77091 -1.49702 -0.70921  2.00000  0.00000  0.00000     ... ... ..... ....... ......... ........... .............
E17     2.00000 -0.92945 -1.13613  1.98542 -0.70921 -1.32625  1.94188 -0.47863 -1.49702  1.87003 -0.24107 -1.64597  1.77091  0.00000 -1.77091  1.64597  0.24107 -1.87003  1.49702  0.47863 -1.94188  1.32625  0.70921 -1.98542  1.13613  0.92945 -2.00000  0.00000  0.00000     ... ... ..... ....... ......... ........... .............
E18     2.00000 -1.13613 -0.70921  1.94188 -1.49702 -0.24107  1.77091 -1.77091  0.24107  1.49702 -1.94188  0.70921  1.13613 -2.00000  1.13613  0.70921 -1.94188  1.49702  0.24107 -1.77091  1.77091 -0.24107 -1.49702  1.94188 -0.70921 -1.13613  2.00000  0.00000  0.00000     ... ... ..... ....... ......... ........... .............
E19     2.00000 -1.32625 -0.24107  1.64597 -1.94188  0.92945  0.70921 -1.87003  1.77091 -0.47863 -1.13613  1.98542 -1.49702  0.00000  1.49702 -1.98542  1.13613  0.47863 -1.77091  1.87003 -0.70921 -0.92945  1.94188 -1.64597  0.24107  1.32625 -2.00000  0.00000  0.00000     ... ... ..... ....... ......... ........... .............
E20     2.00000 -1.49702  0.24107  1.13613 -1.94188  1.77091 -0.70921 -0.70921  1.77091 -1.94188  1.13613  0.24107 -1.49702  2.00000 -1.49702  0.24107  1.13613 -1.94188  1.77091 -0.70921 -0.70921  1.77091 -1.94188  1.13613  0.24107 -1.49702  2.00000  0.00000  0.00000     ... ... ..... ....... ......... ........... .............
E21     2.00000 -1.64597  0.70921  0.47863 -1.49702  1.98542 -1.77091  0.92945  0.24107 -1.32625  1.94188 -1.87003  1.13613  0.00000 -1.13613  1.87003 -1.94188  1.32625 -0.24107 -0.92945  1.77091 -1.98542  1.49702 -0.47863 -0.70921  1.64597 -2.00000  0.00000  0.00000     ... ... ..... ....... ......... ........... ..TT.........
E22     2.00000 -1.77091  1.13613 -0.24107 -0.70921  1.49702 -1.94188  1.94188 -1.49702  0.70921  0.24107 -1.13613  1.77091 -2.00000  1.77091 -1.13613  0.24107  0.70921 -1.49702  1.94188 -1.94188  1.49702 -0.70921 -0.24107  1.13613 -1.77091  2.00000  0.00000  0.00000     ... ... ..... ....... ......... ..TT....... .............
E23     2.00000 -1.87003  1.49702 -0.92945  0.24107  0.47863 -1.13613  1.64597 -1.94188  1.98542 -1.77091  1.32625 -0.70921  0.00000  0.70921 -1.32625  1.77091 -1.98542  1.94188 -1.64597  1.13613 -0.47863 -0.24107  0.92945 -1.49702  1.87003 -2.00000  0.00000  0.00000     ... ... ..... ....... ..TT..... ........... ......TT.....
E24     2.00000 -1.94188  1.77091 -1.49702  1.13613 -0.70921  0.24107  0.24107 -0.70921  1.13613 -1.49702  1.77091 -1.94188  2.00000 -1.94188  1.77091 -1.49702  1.13613 -0.70921  0.24107  0.24107 -0.70921  1.13613 -1.49702  1.77091 -1.94188  2.00000  0.00000  0.00000     ... ... ..... ..TT... ......... ......TT... .............
E25     2.00000 -1.98542  1.94188 -1.87003  1.77091 -1.64597  1.49702 -1.32625  1.13613 -0.92945  0.70921 -0.47863  0.24107  0.00000 -0.24107  0.47863 -0.70921  0.92945 -1.13613  1.32625 -1.49702  1.64597 -1.77091  1.87003 -1.94188  1.98542 -2.00000  0.00000  0.00000     TT. ... ..TT. ....... ......TT. ........... ..........TT.

 Irrational character values:  1.985417748196 = 2*cos(2*π/52) = 2*cos(π/26)
                               1.941883634852 = 2*cos(4*π/52) = 2*cos(π/13)
                               1.870032485371 = 2*cos(6*π/52) = 2*cos(3*π/26)
                               1.770912051306 = 2*cos(8*π/52) = 2*cos(2*π/13)
                               1.645967731787 = 2*cos(10*π/52) = 2*cos(5*π/26)
                               1.497021496342 = 2*cos(12*π/52) = 2*cos(3*π/13)
                               1.326245316482 = 2*cos(14*π/52) = 2*cos(7*π/26)
                               1.136129493462 = 2*cos(16*π/52) = 2*cos(4*π/13)
                               0.929446344088 = 2*cos(18*π/52) = 2*cos(9*π/26)
                               0.709209774085 = 2*cos(20*π/52) = 2*cos(5*π/13)
                               0.478631328575 = 2*cos(22*π/52) = 2*cos(11*π/26)
                               0.241073360511 = 2*cos(24*π/52) = 2*cos(6*π/13)



 Symmetry of Rotations and Cartesian products

A1   d+g+i+k+m    z2, z4, z6 
A2   R            Rz 
B2   p+f+h+j+l    z, z3, z5 
E1   p+f+h+j+l    {x, y}, {xz2, yz2}, {xz4, yz4} 
E2   d+g+i+k+m    {x2y2, xy}, {z2(x2y2), xyz2}, {z4(x2y2), xyz4} 
E3   f+h+j+l      {x(x2−3y2), y(3x2y2)}, {xz2(x2−3y2), yz2(3x2y2)} 
E4   g+i+k+m      {(x2y2)2−4x2y2, xy(x2y2)}, {z2((x2y2)2−4x2y2), xyz2(x2y2)} 
E5   h+j+l        {x(x2−(5+2√5)y2)(x2−(5−2√5)y2), y((5+2√5)x2y2)((5−2√5)x2y2)} 
E6   i+k+m        {x2(x2−3y2)2y2(3x2y2)2, xy(x2−3y2)(3x2y2)} 
E7   j+l 
E8   k+m 
E9   l 
E10  m 
E17  m 
E18  l 
E19  k+m 
E20  j+l 
E21  i+k+m        {xz(x2−(5+2√5)y2)(x2−(5−2√5)y2), yz((5+2√5)x2y2)((5−2√5)x2y2)} 
E22  h+j+l        {z((x2y2)2−4x2y2), xyz(x2y2)} 
E23  g+i+k+m      {xz(x2−3y2), yz(3x2y2)}, {xz3(x2−3y2), yz3(3x2y2)} 
E24  f+h+j+l      {z(x2y2), xyz}, {z3(x2y2), xyz3} 
E25  R+d+g+i+k+m  {Rx, Ry}, {xz, yz}, {xz3, yz3}, {xz5, yz5} 

 Notes:

    α  The order of the D26d point group is 104, and the order of the principal axis (S52) is 52. The group has 29 irreducible representations.

    β  The D26d point group is isomorphic to C52v and D52.

    γ  The D26d point group is generated by two symmetry elements, S52 and either a perpendicular C2 or a vertical σd.
       Also, the group may be generated from a C2 plus a σd (some pairs will yield smaller groups, though; choosing a minimum angle is safe).

    δ  The group contains one set of twofold symmetry axes (C2) perpendicular to the principal (z) axis. Both x and y axes are members of that set.

    ε  The single σd set of symmetry planes contains neither the xz nor the yz planes; but it contains the median plane (x+y)z.

    ζ  The lowest nonvanishing multipole moment in D26d is 4 (quadrupole moment).

    η  This point group is non-Abelian (some symmetry operations are not commutative).
       Therefore, the character table contains multi-membered classes and degenerate irreducible representations.

    θ  Some of the characters in the table are irrational because the order of the principal axis is neither 1,2,3,4 nor 6.
       These irrational values can be expressed as cosine values, or as solutions of algebraic equations with a leading coefficient of 1.
       All characters are algebraic integers of a degree much less than half the order of the principal axis.

    ι  The point group corresponds to a polygon inconstructible by the classical means of ruler and compass. Yet it becomes constructible
       if angle trisection is allowed, e.g., with neusis construction or origami. This is because the order of the principal axis is given
       by a product of any number of different Pierpont primes (...,5,7,13,17,19,37,73,97,109,163,...) times arbitrary powers of two and three.
       All characters of this group can be expressed using complex numbers, elementary arithmetic operations, square roots and third roots.

This Character Table for the D26d point group was created by Gernot Katzer.

For other groups and some explanations, see the Main Page.