If I like cryptography, programming and pure math, what should I do and build in crypto?

> Huge impact (xyk Uniswap is the most important innovation in crypto imo)
> Lot of research in the ecosystem
> Still a small market, but big enough to get funding and trying hypothesis

Prediction markets are also cool, but seems to lack traction in crypto

Some of my friends got interested in that just before the hype. I like prediction markets. Except standard financial instruments, whats interesting in DeFi AMM