When readers are exploring a topic on Arbital, we'd love to also be able to point them to high-quality external resources where they can learn more, or look at things from another angle. Generally, these links should go in an External resources lens, connected to an existing main page (don't create a new standalone page just for links to resources, unless there's already a main page with a good summary explanation of the concept -- we want to make sure users who hover over a greenlink to the page will see a good summary).
[todo: Write guidelines.]
Good sources of external resources for math include:
- BetterExplained - Intuitive and often interactive explanations. [comment: (CC-BY-NC-SA)
- Tricki - A repository of mathematical knowhow, particularly proof techniques. [comment: (CC-BY-NC(http://www.tricki.org/tricki/licence))
- Math Insight - Intuitive and interactive explanations.