Title On the Paired-Domination Subdivision Number of Trees Type of Research Article Keywords On the Paired-Domination Subdivision Number of Trees Abstract On the Paired-Domination Subdivision Number of Trees Researchers S. Wei (First Researcher)، G. Hao (Second Researcher)، Seyed Mahmoud Sheikholeslami Kavkani (Third Researcher)، Rana Khoeilar (Fourth Researcher)، hossein karami (Fifth Researcher)