There's still some confusion left in the formula because one iAsset can have multiple corresponding LP tokens.

Suppose iUSD iAsset has 2 LP tokens -- lp1 & lp2.

k was previously defined as an amount of INDY given per iAsset and if iAsset has several LP tokens then this k should be proportionally distributed between its LP tokens.

When calculating r we either need to change k to mean "INDY given per collection of LP tokens corresponding to a given iAsset" or change formula to something like this:

$r = k (\sum_l \frac{x_l}{\sum_i a_i^l} y_l )$

where

• $l$ is a collection of types of LP tokens for a given iAsset (for iUSD it's {lp1, lp2})
• $x_l$ is a current user's staked amount of a specific LP token (for a given iAsset)
• $a^l$ is a set of specific staked LP tokens for a given iAsset for each user
• $y_l$ is a proportion of total minted amount for a LP token $l$ of a total minted amount of all LP tokens for a given iAsset (for lp1 it's minted_amount_lp1 / (minted_amount_lp1 + minted_amount_lp2))