A CONNECTED GRAPH IS PATH-POSITIVE IFF ITS SPECTRAL RADIUS IS AT LEAST TWO  

作　　者：SHI Ronghua(Department of Applied Mathematics, Nanjing University of Science and Technology,Nanjing 210014, China) 

出　　处：《Systems Science and Mathematical Sciences》1996年第4期319-325,共7页

摘　　要：ＡＣＯＮＮＥＣＴＥＤＧＲＡＰＨＩＳＰＡＴＨ－ＰＯＳＩＴＩＶＥＩＦＦＩＴＳＳＰＥＣＴＲＡＬＲＡＤＩＵＳＩＳＡＴＬＥＡＳＴＴＷＯ￥ＳＨＩＲｏｎｇｈｕａ（ＤｅｐａｒｔｍｅｎｔｏｆＡｐｐｌｉｅｄＭａｔｈｅｍａｔｉｃｓ，ＮａｎｊｉｎｇＵｎｉｖｅｒｓｉｔｙｏｆＳ...The main purpose of this paper is to prove that a connected graph is pathpositive if and only if its spectral radius is at least two.

关 键 词：Matrix CONNECTED graph characteristic POLYNOMIAL spectral radius. 

分 类 号：O157.5[理学—数学]