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In financial economics, a state-price security, also called an Arrow–Debreu security (from its origins in the Arrow–Debreu model), a pure security, or a primitive security is a contract that agrees to pay one unit of a numeraire (a currency or a commodity) if a particular state occurs at a particular time in the future and pays zero numeraire in all the other states.
A security deposit is a sum of money held in trust. [ 1 ] In leasing, security deposits, also known as "rent deposits", [ 2 ] are required most often by lessors of automobiles , residential property, and commercial real estate .
In economics the production set is a construct representing the possible inputs and outputs to a production process. A production vector represents a process as a vector containing an entry for every commodity in the economy. Outputs are represented by positive entries giving the quantities produced and inputs by negative entries giving the ...
These inherited properties are not sufficient to guarantee that the excess demand curve is downward-sloping, as is usually assumed. The uniqueness of the equilibrium point is also not guaranteed. There may be more than one price vector at which the excess demand function is zero, which is the standard definition of equilibrium in this context. [14]
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In finance, a position is the amount of a particular security, commodity or currency held or owned by a person or entity. [1]In financial trading, a position in a futures contract does not reflect ownership but rather a binding commitment to buy or sell a given number of financial instruments, such as securities, currencies or commodities, for a given price.
A certain total economic output x is required to satisfy a given level of final demand y. This final demand may be domestic (for private households as well as the public sector) or foreign (exports) and can be written as an n×1 vector. When this vector of final demand y is multiplied by the Leontief inverse (I−A) −1, we obtain total output ...
A competitive equilibrium is a price vector and an allocation in which the demands of all agents are satisfied (the demand of each good equals its supply). In a linear economy, it consists of a price vector and an allocation , giving each agent a bundle such that: