Addition and Subtraction of Ideals

✍ Scribed by Michael Maltenfort

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 204 KB
• Volume: 214
• Category: Article
• ISSN: 0021-8693
• DOI: 10.1006/jabr.1998.7729

✦ Synopsis

A-module. ''Addition'' refers to being given a surjection P ¸I and producing a surjection P ¸I l I. This is useful, for example, when P is free, to determine how many elements it takes to generate the ideal I l I. ''Subtraction'' ˜refers to being given P ¸I l I and producing some P ¸I. A major use of this is