Certain type of perfect information games (PI-games), the so-called Banach-Mazur games, so far have not been applied in economy. The perfect information positional game is defined as the game during which at any time the choice is made by one of the players who is acquainted with the previous...

The art market, following the example of financial markets, is divided into a primary market, where works are traded directly from artists, and a secondary market that is mainly the auction market. Coronavirus disease 2019 (COVID-19) and galloping inflation have influenced the creation of a bull...