16D80 4 13C99 3 16U80 2 $J$-symmetric ring 1 16D10 1 16D10; 16D40; 16D80 1 16D99 1 2-primal rings 1 Compressible 1 Jacobson radical 1 Primary 16D10 1 Rickart module 1 Rickart modules 1 Secondary 16D80 1 V-rings 1 \(\mathrm{Rad}(\cdot)\)-inverse split module 1 \(\mathrm{Soc}(\cdot)\)-inverse split module 1 abelian modules 1 central Armendariz rings 1 central reduced rings 1 central reversible rings 1 central semicommutative rings 1 central symmetric rings 1 critically compressible 1 dual Rickart modules 1 left duo ring 1 polyform 1 principally projective modules 1 reduced modules 1 rigid modules 1