Welcome to the Open Problem Garden, a collection of unsolved problems in mathematics. Here you may:

• Read descriptions of open problems.
• Post comments on them.
• Create and edit open problems pages (easy registration required).

Help us Grow!
We are eager to expand, so we are inviting contributions both large and small from all areas of mathematics.
Many thanks to our contributors!

More about the Garden

• Structure
• Purpose
• Editorial Policy
• RSS feeds (get what you want delivered to you!)