We deal with a weighted biharmonic problem in the unit ball of $\mathbb{R}^{4}$. The non-linearity is assumed to have critical exponential growth view Adam's type inequalities. weight $w(x)$ logarithm and potential $V$ positive continuous function on $\overline{B}$. It proved that there nontrivial weak solution this by mountain Pass Theorem. avoid loss compactness proving concentration result s...

In this paper, we are concerned with stable solutions to the fractional elliptic equation $$\begin{aligned} (-\Delta )^s u=e^u \text{ in } {\mathbb {R}}^{N}, \end{aligned}$$ where $$(-\Delta )^s$$ is Laplacian $$0<s<1$$ . By developing a new technique non-compactly supported test functions, establish nonexistence of provided that $$N<10s$$ This result optimal when $$s\uparrow 1$$ On other hand,...

A nonlinear integro-differential equation of convolution type with order of nonlinearity more than one and a stable trivial solution is considered. The integral in this equation has an exponential kernel and polynomial integrand. The difference analogue of the equation considered is constructed in the form of a difference equation with continuous time and it is shown that this difference analog...