Let $\Omega \subset \mathbb{R}^m$ be an open subset bounded with a smooth boundary. Let $D$ be any countable dense subset of $\Omega$. 

**Problem** : Given any bounded continuous function $f:\Omega\to\mathbb{R}$, can we learn it to a given accuracy $\epsilon$? ($\epsilon>0$).

**Definition** : What do you mean by learning a function to a given accuracy $\epsilon$?

Using samples of $f$, at sufficiently large **but finite** number of data points that are drawn **randomly** from the set $D$ (under a uniform probability distribution), and using registers whose **precision** is sufficiently large but **finite** (this finite precision is an important condition), should be able to **compute** a function $F$ with only a finite number of computations (they could be additions, multiplications, and divisions but performed using registers of finite precision) such that $\|f-F\|_{L^\infty(\Omega)} \le \epsilon$.

**compute a function** $F$ : Given any query point $x$, one should give out $F(x)$.

**Question**: Has anyone formulated this problem before (any reference). Has anyone solved it? If I solve it, what is its market value? (mathematics market)

PS: solving means coming up with a method to learn such functions in the defined way.

(please feel free to tag appropriately)