2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/96620Supersymmetric U(Nc) gauge theory with Nf massive hypermultiplets in the fundamental representation admits various BPS solitons like domain walls and their webs. In the first part we show as a review of the previous paper hep-th/0412024 that domain walls are realized as kinky fractional D3-branes interpolating between separated D7-branes. In the second part we discuss brane configurations for domain wall webs. This is a contribution to the conference based on the talk given by MN.4 pages, 9 figures. Talks given by MN at PASCOS 2005, May 30-June 4, 2005, Gyeongju, Korea, and at SUSY 2005, July 18-23, 2005, IPPP Durham. To appear in the proceedings of PASCOS 2005High Energy Physics - Theorytext