Sandbox

$MATPOSTR_{\gamma ,c-1}=\mathbf {MATPOSTR} _{\gamma ,c-1}^{t-1}*{\frac {AnalFunc(GDPPCP_{\gamma })}{AnalFunc(GDPPCP_{\gamma }^{t-1})}}+\mathbf {CultShMP} _{\gamma -cultural}^{t}+\mathbf {matpostradd} _{\gamma }^{t}$

where

<math>\mathbf{CultShMP}^t_{\gamma-cultural}=F(\mathbf{MATPOSTR}^{t-1}_{\gamma,c-1},AnalFunc(GDPPCP^{t-1}_{\gamma})