2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/201780We point out that the results by Brandenberger et al. in Phys.Rev.D77:083502(2008) that the geometry around the straight cosmic strings with stationary junctions is flat to linear order in the string tension can be immediately extended to any order.5 pages, accepted for publication in PRDAstrophysicsGeneral Relativity and Quantum CosmologyHigh Energy Physics - Theorytext