Depth reduction of a class of Witten zeta functions (Q2380217)

Summary: We show that if \(a, b, c, d, f\) are positive integers such that \(a + b + c + d + f\) is even, then the Witten zeta value \(\zeta_{\mathfrak{sl}(4)}(a, b, c, d, 0, f)\) is expressible in terms of Witten zeta functions with fewer arguments.