What are the four basic assumptions of perfect competition? Explain in words what they imply for a perfectly competitive firm.

Perfect competition is a market situation by means of which no supplier can influence or determine the price of a good or service, as long as there is a multiplicity of suppliers who offer a homogeneous good, equivalent to that of the other suppliers. These goods, therefore, would not have differences between them (an example could be the fruit market), and therefore buyers could decide to buy from those sellers who offer the best prices. In this way, perfect competition would be generated between the bidders, who through their price would seek to attract buyers. For this type of competition (in theory, since in practice it is almost impossible) to occur, it requires a market without any type of barriers, with a product with the same characteristics, a high number of market players and abundant information about each of the products.