On numerical radius of some matrices

Shyamasree Ghosh Dastidar, Gour Hari Bera
2018 International Journal of Mathematical Analysis  
In this paper we obtain numerical radius of a general complex matrix of order two without reducing it in triangular form. We also find numerical radius of nilpotent matrix of order three and different matrices of order three and four satisfying special property.
doi:10.12988/ijma.2018.711145 fatcat:5mjb5skfojadbkp3pdukqamcii