ANJELI PUTRI, RATIH; YANITA, YANITA; RIANTI HELMI, MONIKA. HUBUNGAN RUANG NULL DAN RUANG PETA PADA MATRIKS IDEMPOTEN. Jurnal Matematika UNAND, [S. l.], v. 10, n. 1, p. 137–141, 2021. DOI: 10.25077/jmu.10.1.137-141.2021. Disponível em: https://jmua.fmipa.unand.ac.id/index.php/jmua/article/view/777. Acesso em: 6 nov. 2026.