# Constructive gems and stones

- 07 September 2009
- Gems and stones

In various mathematical forums, mostly those of a logical flavor, I regularly see people asking basic questions about constructive mathematics. I also see misconceptions about constructive mathematics. I shall make a series of posts, _Constructive Gems and Stone_s, which will answer basic questions about constructive mathematics, and will hopefully help fix wrong ideas about constructive mathematics.

A constructive *gem* is something nice about constructive mathematics that makes you want to know more about it. In contrast, a constructive *stone* is a complication in constructive mathematics which does not exist in the classical counterpart.

Here we go! The first one is about finite sets.

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