Matrix t*K(1) in Subspace 104 with Dimension 16

(K(1) is the first-order Grosse operator)

I*Sqrt[3]*t (-U - I*Sqrt[3]*U)/2 ((3 - I*Sqrt[3])*t)/Sqrt[2] 0 0 0 0 0 0 0 0 0 0 0 0 0
(U - I*Sqrt[3]*U)/2 (I/2)*Sqrt[3]*t -(U/Sqrt[2]) 0 0 ((-3*I)*t)/Sqrt[2] 0 0 0 0 -(Sqrt[3/2]*t) 0 0 0 (Sqrt[3]*t)/2 -(Sqrt[3/2]*U)
((-3 - I*Sqrt[3])*t)/Sqrt[2] U/Sqrt[2] 0 0 0 0 0 0 0 0 0 0 0 0 ((3*I)*U)/Sqrt[2] 0
0 0 0 0 0 0 (1 + I*Sqrt[3])*t 0 0 0 0 -2*t 0 0 0 0
0 0 0 0 0 0 ((-1 - I*Sqrt[3])*t)/Sqrt[2] 0 ((3 - I*Sqrt[3])*t)/Sqrt[2] 0 0 ((-1 - I*Sqrt[3])*t)/Sqrt[2] 0 0 0 0
0 ((-3*I)*t)/Sqrt[2] 0 0 0 0 -U 0 0 0 t (-U - I*Sqrt[3]*U)/2 0 0 -(t/Sqrt[2]) 0
0 0 0 (-1 + I*Sqrt[3])*t ((1 - I*Sqrt[3])*t)/Sqrt[2] U 0 0 ((1 + I*Sqrt[3])*t)/2 -(Sqrt[2]*U) (I/2)*(I + Sqrt[3])*U ((1 - I*Sqrt[3])*t)/2 ((-1 - I*Sqrt[3])*U)/Sqrt[2] ((-1 - I*Sqrt[3])*t)/Sqrt[2] 0 (-1 - I*Sqrt[3])*t
0 0 0 0 0 0 0 I*Sqrt[3]*t (-I/2)*(-3*I + Sqrt[3])*U ((3 - I*Sqrt[3])*t)/Sqrt[2] 0 0 0 0 0 0
0 0 0 0 ((-3 - I*Sqrt[3])*t)/Sqrt[2] 0 (I/2)*(I + Sqrt[3])*t ((3 - I*Sqrt[3])*U)/2 0 0 0 (-I/2)*(-I + Sqrt[3])*t 0 I*Sqrt[6]*t 0 0
0 0 0 0 0 0 Sqrt[2]*U ((-3 - I*Sqrt[3])*t)/Sqrt[2] 0 0 0 (I*(I + Sqrt[3])*U)/Sqrt[2] 0 0 0 0
0 Sqrt[3/2]*t 0 0 0 -t (U + I*Sqrt[3]*U)/2 0 0 0 0 -U ((1 + I*Sqrt[3])*t)/Sqrt[2] 0 I*Sqrt[3/2]*t 0
0 0 0 2*t ((1 - I*Sqrt[3])*t)/Sqrt[2] (U - I*Sqrt[3]*U)/2 (-I/2)*(-I + Sqrt[3])*t 0 ((1 - I*Sqrt[3])*t)/2 ((1 + I*Sqrt[3])*U)/Sqrt[2] U 0 -(Sqrt[2]*U) (I*(I + Sqrt[3])*t)/Sqrt[2] 0 (-1 - I*Sqrt[3])*t
0 0 0 0 0 0 ((1 - I*Sqrt[3])*U)/Sqrt[2] 0 0 0 (I*(I + Sqrt[3])*t)/Sqrt[2] Sqrt[2]*U 0 0 (-1 + I*Sqrt[3])*t 0
0 0 0 0 0 0 ((1 - I*Sqrt[3])*t)/Sqrt[2] 0 I*Sqrt[6]*t 0 0 ((1 + I*Sqrt[3])*t)/Sqrt[2] 0 (-I)*Sqrt[3]*t (I/2)*(3*I + Sqrt[3])*U ((3 - I*Sqrt[3])*t)/Sqrt[2]
0 -(Sqrt[3]*t)/2 ((3*I)*U)/Sqrt[2] 0 0 t/Sqrt[2] 0 0 0 0 I*Sqrt[3/2]*t 0 (1 + I*Sqrt[3])*t ((3 + I*Sqrt[3])*U)/2 (I/2)*Sqrt[3]*t (-I)*Sqrt[3/2]*U
0 Sqrt[3/2]*U 0 0 0 0 (1 - I*Sqrt[3])*t 0 0 0 0 (1 - I*Sqrt[3])*t 0 ((-3 - I*Sqrt[3])*t)/Sqrt[2] (-I)*Sqrt[3/2]*U 0