International Conference on Noncommutative Rings and their Applications, Lens, Fransa, 1 - 04 Temmuz 2013, cilt.634, ss.67-77
Let R be a ring with identity and M be a unital right R-module. A nonzero submodule N of M is called a second submodule if N and all its nonzero homomorphic images have the same annihilator in R. The second radical of a module M is defined to be the sum of all second submodules of M. In this paper we give some results concerning second submodules and attached primes of a module and we study the second radical of a module in some cases.