Peter Math on Instagram: "I used Parrot AI to edit this, link in bio👆 A martingale is a mathematical model for a “fair game,” where the expected future value of a process is equal to its current value, given all past information. In other words, knowing the past doesn’t give you an advantage in predicting gains or losses going forward. Martingales are fundamental in probability theory and play a huge role in finance, especially in pricing assets and modeling stock markets. They formalize the id