Pakistan Research Repository

Stanley Decompositions of Multigraded Modules and Reductions Modulo Regular Elements

Rauf, Asia (2010) Stanley Decompositions of Multigraded Modules and Reductions Modulo Regular Elements. PhD thesis, Govt. College University, Lahore.

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Abstract

In Chapter 1, some necessary definitions and results from commutative algebra are given along with a description on the progress towards the Stanley decompositions of multigraded S-modules, where S = K[x1, . . . , xn] is a polynomial ring in n variables over a field K. In Chapter 2, we study the behavior of Stanley decompositions and of pretty clean filtrations under reduction modulo a regular element. We prove that the Stanley depth of cyclic module drop by one under reduction modulo a regular element. We see that the cyclic module is pretty clean if and only if the reduction modulo a regular element is pretty clean. We also discuss the behavior of depth, Stanley depth and dimension on algebra tensor products. In Chapter 3, it is shown that to what extend Stanley depth behaves like ordinary depth under reduction modulo an element and is clarified the different behavior of the two concepts by some examples. We discuss the behavior of depth, Stanley depth and dimension along short exact sequences of finitely generated multigraded S-modules.

Item Type:Thesis (PhD)
Uncontrolled Keywords:Stanley, Decompositions, Multigraded, Modules, Reductions, Modulo, Regular, Elements, Algebra, tensor
Subjects:Physical Sciences (f) > Mathematics(f5)
ID Code:6018
Deposited By:Mr. Javed Memon
Deposited On:20 Apr 2011 10:17
Last Modified:20 Apr 2011 10:17

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