Not to be confused with group presentation. Representation theory is a branch of mathematics that studies abstract algebraic structures by representing their elements as linear transformations of vector spaces, and studies modules over these abstract algebraic structures.
The signature effect of HIV infection, and the cause of AIDS, is disruption of the T-lymphocyte branch of the immune system and in particular the destruction of CD4+ T-helper cells.
HIV infects & destroys a lymphocyte called T cell that is a CD4+, HIV replicates when infected cell divides, DNA of infected lymphocyte is dormant until activated by another virus or foreign agent and then divides again.