The $m$-colored composition poset

We generalize Bj"{o}rner and Stanley’s poset of compositions to $m$-colored compositions. Their work draws many analogies between their (1-colored) composition poset and Young’s lattice of partitions, including links to (quasi-)symmetric functions and representation theory. Here we show that many of these analogies hold for any number of colors. While many of the proofs for Bj"{o}rner and Stanley’s poset were simplified by showing isomorphism with the subword order, we remark that with 2 or more colors, our posets are not isomorphic to a subword order.