Characterization of maximal elements of the LLL-positivity poset
Let PCnPC_nPCn be the poset of unordered pairs {α,β}\{\alpha,\beta\}{α,β} of compositions satisfying ∣α∣+∣β∣=n|\alpha|+|\beta|=n∣α∣+∣β∣=n, ordered by … For an unordered pair {α,β}\{\alpha,\beta\}{α,β}, define…