## Date of Award

1995

## Document Type

Dissertation

## Degree Name

Doctor of Philosophy (PhD)

## Department

Mathematics

## First Advisor

Augusto Nobile

## Abstract

Let (R, M$\sb{\rm R})$ be a regular local ring of dimension 3 of the form k (x,y,z) $\sb{\rm (x,y,z)},$ where k is an algebraically closed field and let I be an M$\sb{\rm R}$-primary ideal that admits generators. We prove that if I$\sb1$ is the proper transform of I to a quadratic transform (A, M$\sb{\rm A})$ of(R, M$\sb{\rm R})$ such that the analytic spread of I$\sb1$ is 3 and the generators of I$\sb1$ induced by those of I satisfy certain divisibility conditions, then the inequality of multiplicities$$\rm e\sb{A}(M(I\sb1)) < e\sb{R}(I)$$is valid, where M $\rm(I\sb1) \supseteq I\sb1$ is an M$\sb{\rm A}$-primary ideal associated to I$\sb1$ (the ideal I$\sb1$ may not be M$\sb{\rm A}$-primary if dim (R) = 3) through an operation M that we define for ideals in a regular local ring.

## Recommended Citation

Nido valencia, Juan Antonio, "Multiplicities and Transforms of Ideals." (1995). *LSU Historical Dissertations and Theses*. 6041.

https://repository.lsu.edu/gradschool_disstheses/6041

## Pages

67

## DOI

10.31390/gradschool_disstheses.6041