Francisco Federico Raggi Cardenas, Authored 38 papers Developed homological algebra relative to hereditary torsion theory Developed methods for studying properties of lattice in nonhereditary torsion theories First to study the big lattice of preradicals over a ring from the lattice theory point of view (2002) and developed methods for studying it Defined finite length dimension Characterized classes of very important rings such as V-rings or semisimple rings Defined prime preradicals and prime submodules of a module Defined the concept of a main injective module, whose fully invariant submodules are in bijective correspondence with all the left exact preradicals |

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