Evaluation of Euler-Zagier sums.
Evaluation of triple Euler sums.
Explicit evaluations of quadruple Euler sums
Extended Real-Valued Double Sequence and Its Convergence
In this article we introduce the convergence of extended realvalued double sequences [16], [17]. It is similar to our previous articles [15], [10]. In addition, we also prove Fatou’s lemma and the monotone convergence theorem for double sequences.
Extremal -limit points of double sequences.