To be frank, I never heard of such terms. After looking at this question, I rushed to our library to check with reference books on matrices. I didn't find any info abt these. Then I tried Googling. The results shown by google were all related to cryptography (consider it as a hybrid of maths and computer science). So, u may not nee dto know these terms at least till u complete ur B-tech. So, "Just leave it"(Courtesy: NIKE)
I would like to ask one question out of curiosity.... Where did u come accross these terms?
Satyaram B V,
General Secretary, Mandakini Hostel,
IIT Madras