91B02 Fundamental topics (basic mathematics, methodology; applicable to economics in general)

91B06 Decision theory [See also <a href="#code:62Cxx">62Cxx</a>, <a href="#code:90B50">90B50</a>, <a href="#code:91A35">91A35</a>]

91B26 Market models (auctions, bargaining, bidding, selling, etc.)

91B38 Production theory, theory of the firm

91B51 Dynamic stochastic general equilibrium theory

91B64 Macro-economic models (monetary models, models of taxation)

91B76 Environmental economics (natural resource models, harvesting, pollution, etc.)

91B80 Applications of statistical and quantum mechanics to economics (econophysics)

91B82 Statistical methods; economic indices and measures

91B84 Economic time series analysis [See also <a href="#code:62M10">62M10</a>]

91B99 None of the above, but in this section

91Cxx Social and behavioral sciences: general topics {For statistics, see <a href="#code:62-XX">62-XX</a>}

91C20 Clustering [See also <a href="#code:62H30">62H30</a>]

91C99 None of the above, but in this section

91Dxx Mathematical sociology (including anthropology)

91D10 Models of societies, social and urban evolution

91D20 Mathematical geography and demography

91D25 Spatial models [See also <a href="#code:91B72">91B72</a>]

91D35 Manpower systems [See also <a href="#code:91B40">91B40</a>, <a href="#code:90B70">90B70</a>]

91D99 None of the above, but in this section

91E30 Psychophysics and psychophysiology; perception

91E40 Memory and learning [See also <a href="#code:68T05">68T05</a>]

91E99 None of the above, but in this section

91Fxx Other social and behavioral sciences (mathematical treatment)

91F20 Linguistics [See also <a href="#code:03B65">03B65</a>, <a href="#code:68T50">68T50</a>]

91F99 None of the above, but in this section

91G30 Interest rates (stochastic models)

91G60 Numerical methods (including Monte Carlo methods)

91G80 Financial applications of other theories (stochastic control, calculus of variations, PDE, SPDE, dynamical systems)

91G99 None of the above, but in this section

92-XX Biology and other natural sciences