Tricki
a repository of mathematical know-how
Navigate
Tags
Search
Forums
Help
Top level
›
Different kinds of Tricki article
›
Front pages for different areas of mathematics
›
Algebra front page
›
Ring theory front page
›
How to work without an identity element when you clearly need it
Articles linking to
If you don't have an identity element, a set of local units is more than enough
Decompose your ring using idempotents
How to work without an identity element when you clearly need it
Ring theory front page
Search this site:
Username:
*
Password:
*
Create new account
Request new password
Recent articles
View a list of all articles.
Diagonal arguments
Finding an interval for rational numbers with a high denominator
Try to prove a stronger result
Use self-similarity to get a limit from an inferior or superior limit.
Prove a consequence first
Lower degree by increasing dimension (or vice-versa)
Numerical optimization
Numerical solution of partial differential equations
Active forum topics
Plenty of LaTeX errors
Tutorial
A different kind of article?
Countable but impredicative
Tricki Papers
more
Recent comments
Higher dimensional analogues
8 weeks 6 days
ago
Angela, I think you missed
1 year 31 weeks
ago
covering a disc
2 years 4 weeks
ago
Only if squares are of the
2 years 20 weeks
ago
Squares?
2 years 20 weeks
ago
more

8 weeks 6 daysago1 year 31 weeksago2 years 4 weeksago2 years 20 weeksago2 years 20 weeksago