Generalizations of Euler's Theorem to $k$-regular partitions

Let $A_k(n)$ denote the set of $k$-distinct partitions of $n$, and let $B_k(n)$ be the set of $k$-regular partitions of $n$. Glaisher showed that $\mathrm{\#}{A}_k(n)=\mathrm{\#}{B}_k(n)$. For $k=2$, this equality yields the celebrated Euler’s partition theorem. In this paper, we present a new partition set $E_k(n)$, which is equinumerous to $B_k(n)$.