We investigate the Knizhnik-Zamolodchikov linear differential system. The coefficients of this system are rational functions. We have proved that the solution of the KZ system is rational when k is equal to two and n is equal to three (see [5]) . In this paper, we construct the corresponding solution in the explicit form.
Rational Solution of the KZ equation (example)
Rational solutions of KZ equation, case $S_4$
Derivative Polynomials for tanh, tan, sech and sec in Explicit Form
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