MATPOSTRγ,c−1=𝐌𝐀𝐓𝐏𝐎𝐒𝐓𝐑γ,c−1t−1*AnalFunc(GDPPCPγ)AnalFunc(GDPPCPγt−1)+𝐂𝐮𝐥𝐭𝐒𝐡𝐌𝐏γ−culturalt+𝐦𝐚𝐭𝐩𝐨𝐬𝐭𝐫𝐚𝐝𝐝γt
where
<math>\mathbf{CultShMP}^t_{\gamma-cultural}=F(\mathbf{MATPOSTR}^{t-1}_{\gamma,c-1},AnalFunc(GDPPCP^{t-1}_{\gamma})