Skip to main content Accessibility help

We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.

Login Alert

Cancel

Log in

×

Register

Log In

(0) Cart

Back to search results

Home
Search

Search Results

Refine search

Access:

Only show content I have access to (2)

Content type:

Articles (2)

Author:

Publication date:

Over 3 years (2)

From year:

To year:

Apply From and To filters

Subject: Show more

Mathematics (2)

Actions for selected content:

Select all | Deselect all

View selected items
Save to my bookmarks
Export citations
Download PDF (zip)
Save to Kindle
Save to Dropbox
Save to Google Drive
Save content to
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to .

To save content items to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.

Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Please be advised that item(s) you selected are not available.
You are about to save
Your Kindle email address

Please provide your Kindle email.

@free.kindle.com @kindle.com (service fees apply)

By using this service, you agree that you will only keep content for personal use, and will not openly distribute them via Dropbox, Google Drive or other file sharing services

Save Search

You can save your searches here and later view and run them again in "My saved searches".

Search Title: required Please provide a title, maximum of 40 characters.

Cancel

×

2 results

Combinatorics of Words and Semigroup Algebras Which Are Sums of Locally Nilpotent Subalgebras
Vesselin Drensky, Lakhdar Hammoudi
Journal:

Canadian Mathematical Bulletin / Volume 47 / Issue 3 / 01 September 2004

Published online by Cambridge University Press:

20 November 2018, pp. 343-353

Print publication:

01 September 2004
- Article
- - You have access
- PDF
- Export citation
We construct new examples of non-nil algebras with any number of generators, which are direct sums of two locally nilpotent subalgebras. Like all previously known examples, our examples are contracted semigroup algebras and the underlying semigroups are unions of locally nilpotent subsemigroups. In our constructions we make more transparent than in the past the close relationship between the considered problem and combinatorics of words.

An Answer to a Question of Kegel on Sums of Rings
A. V. Kelarev
Journal:

Canadian Mathematical Bulletin / Volume 41 / Issue 1 / 01 March 1998

Published online by Cambridge University Press:

20 November 2018, pp. 79-80

Print publication:

01 March 1998
- Article
- - You have access
- PDF
- Export citation
We construct a ring $R$ which is a sum of two subrings $A$ and $B$ such that the Levitzki radical of $R$ does not contain any of the hyperannihilators of $A$ and $B$. This answers an open question asked by Kegel in 1964.