protocol fee: 5%subject fee: 5%When you buy a share of a subject, your ether will go to the subject’s pool. And when you want to sell your share, you are selling your share to the subject’s pool.
For each subject pool, the relationship between the total supply of share( t ) and the amount of ETH ( v(t) )in the subject’s pool is:
$$ v(t) = \frac{t(t-1)(2(t-1)+1)}{6 * 16000} $$
Note that the unit of v(t) is ether.
The above equation can be simplified to: