Title Bounds on the signed total Roman 2-domination in graphs Type of Research Article Keywords Bounds on the signed total Roman 2-domination in graphs Abstract Bounds on the signed total Roman 2-domination in graphs Researchers Rana Khoeilar (First Researcher)، Leila Shahbazi (Second Researcher)، Seyed Mahmoud Sheikholeslami Kavkani (Third Researcher)، Zehui Shao (Fourth Researcher)