Originally Posted by potpoor
Expected value is your equity times the size of the pot after you call the bet.
Not quite for the way EV and equity are usually defined. For an all-in call situation, EV is your equity (win probability) times the size of the pot after you call the bet less the amount of the bet.
EV = expected amount of winnings less expected amount of loss
= Eq *(Pot + Bet) - (1-Eq)*Bet, where Pot is amount before villain bets
= Eq*(Pot + 2*Bet) - Bet
= Eq *(Pot after you call) - Bet