abstract government size plays a vital role in the economic development process. therefore, in this study, the existence of a non-linear relationship between government size and economic growth was investigated using the two-sector production function developed by ram (1986). the data, covering 44 years (1961-2005), were collected from the iranian economic information center. two classification...

In this paper, the parabolic problem $$u_t - div(\omega (x) \nabla u)= h(t) f(u) + l(t) g(u)$$ with non-negative initial conditions pertaining to $$C_b({\mathbb {R}}^N)$$ , will be studied, where weight $$\omega $$ is an appropriate function that belongs Muckenhoupt class $$A_{1 \frac{2}{N}}$$ and functions f, g, h l are continuous. The main goal establish global non-global existence of solutio...

Abstract A fundamental question in the field of cohomology dynamical systems is to determine when there are solutions coboundary equation: $$ \begin{align*} f = g - \circ T. \end{align*} In many cases, T given be an ergodic invertible measure-preserving transformation on a standard probability space $(X, {\mathcal B}, \mu )$ and contained $L^p$ for $p \geq 0$ . We extend previous results by sho...