Abstract:
In the paper some preliminaries are stated, including the basic properties of $\mathscr{L}L^1(\mathbb{R}^+)$. As the appropriate conditions for $g\in \mathscr{L}L^1(\mathbb{R}^+),$ we attempted to take those ones formulated in the paper.
Keywords and phrases:laplace transformation, space $L^1(\mathbb R^+)$, Banach spaces.