# Concepts

- [Concentrated vs. constant product](/raydium/concepts/concentrated-vs.-constant-product.md)
- [Impermanent loss](/raydium/concepts/impermanent-loss.md)
- [Ticks and tick arrays](/raydium/concepts/ticks-and-tick-arrays.md)
- [How fees work](/raydium/concepts/how-fees-work.md)