In this paper, we introduce the concept of a quasi-radical semi prime submodule. Throughout this work, we assume that is a commutative ring with identity and is a left unitary R- module. A proper submodule of is called a quasi-radical semi prime submodule (for short Q-rad-semiprime), if for , ,and then . Where is the intersection of all prime submodules of .
Let R be a commutative ring with unity and let B be a submodule of a non-zero left R-module D, B is called semiprime if whenever a
k
y ∈ B, a ∈ R, y ∈ D, k ∈ Z
+ implies a
y ∈ B. We say that a proper submodule B of an R-module D is a quasi-semiprime submodule if whenever a
k
b
y ∈ B, where a, b ∈ R, y ∈ D, k ∈ Z
+ implies that a
b
y ∈ B. Equivalently, a proper submodule B of an R-module D is said to be a quasi-semiprime submodule if and only if [B ∶ (y)] is a semiprime ideal of R for each y ∈ D. We give many results of this type of submodules.
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