Linear Maps That Preserve Left Spectrum of Diagonal Quaternionic Matrices Year: 2015 Volume: 9 Issue: 3 195 - 198 Pages Authors: Geng Yuan Yiwan Guo Fahui Zhai Shuhua Zhang Abstract: In this paper, we discuss some properties of left spectrum and give the representation of linear preserver map the left spectrum of diagonal quaternionic matrices. Keywords: Quaternionic matrix left spectrum linear preserver map.