  Let $k \ge 2$ and $\alpha_1, \beta_1, ..., \alpha_k, \beta_k$ be reals such
that the $\alpha_i$'s are irrational and greater than 1. Suppose further that
some ratio $\alpha_i/\alpha_j$ is irrational. We study the representations of
an integer $n$ in the form $$ p_1 + p_2 + ... + p_k = n, $$ where $p_i$ is a
prime from the Beatty sequence $$ \mathcal B_i = \left\{n \in \mathbb N : n = [
\alpha_i m + \beta_i ] \text{for some} m \in \mathbb Z \right\}. $$
