Returns to scale refer to a special relationship between output and input. During production, this relationship refers to the connection between the changes that occur with the output and those that began in the input.

Theories of risk returns and portfolio theory.

Georg Tillmann has written:

'Equity, incentives, and taxation' -- subject(s): Equilibrium (Economics), Mathematical models, Tax incentives, Tax incidence, Welfare economics

'A Simple Note To The Problem Of Efficiency And Increasing Returns'

Takashi Suzuki has written:

'General equilibrium analysis of production and increasing returns' -- subject(s): Mathematical models, Equilibrium (Economics)

classification of economics

1-Applied economics

2-Theoretical economics

i)Welfare economics

ii)Positive economics(i-Micro economics,ii-Macro economics,iii-Mathematical economics)