ABSTRACT
The notion of an asset (anything of value) is one of the fundamental notions in the financial mathematics. Assets can be risky and non-risky. Here risk is understood as an uncertainty that can cause losses (e.g., of wealth). The most typical representatives of such assets are the following basic securities: stocks S and bonds (bank accounts) B. These securities constitute the basis of a financial market that can be understood as a space equipped with a structure for trading the assets.
