We can obtain the closed form of this type of multiple improper integrals by using differentiation with respect to a parameter and Leibniz differential rule. On the other hand, we propose two examples to do calculation practically. The research methods adopted in this study involved finding ...
The reciprocal space integrals were computed using a Monkhorst–Pack k-point mesh of 6 Â 6 Â 4, cpoffirffiresppoffiffinding to the 20-atom orthorhombic cell which can be viewed as a 2 Â 2 Â 2 multiple of the elemental five-atom perovskite unit. Note that this is the ...
We can obtain the infinite series forms of these two types of multiple improper integrals, and we propose four examples to do calculation practically. The research methods adopted in this study involved finding solutions through manual calculations and verifying these solutions by using Maple. This ...
Concrete examples are also solved.doi:10.1016/j.jmaa.2005.06.051S. HeikkilM. KumpulainenElsevier Inc.Journal of Mathematical Analysis and ApplicationsHeikkila, S, Kumpulainen, M: On improper integrals and differential equations in ordered Banach spaces. J Math Anal Appl. 319, 579-603 (2006). ...