Constant product
An AMM model that relates two asset reserves through the formula x × y = k.
In more detail
In the basic model, removing some of one asset requires adding enough of the other to satisfy the pool's rule. That makes each further unit more expensive as the reserve shrinks. The simple equation explains the shape of trading, while fees and real protocol accounting mean k need not remain permanently unchanged.
How you might use it
A swap buys tokens from a constant-product pool, reducing that reserve and increasing the other; the next buyer faces a different price.
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