Presented here is a simplified mathematical model to reflect a weak recovery after the financial crisis. The model confirms hypothesis that the weak recovery is caused by a decline in investment not compensated by the interest rate decrease. The model explains a transformation of economic trend...

Presented here is a simplified mathematical model describing a supply side crisis caused by the coronavirus pandemic (COVID – 19). Model of a single-product economy is presented where the supply shock has a constant acceleration. If amount of the supply shock has a modest positive acceleration...