Let \(N=\{1,\ldots,n\}\) be the set of claimants, \(d\in \mathbb{R}_+^N\) a vector of claims and
denote by \(D=\sum_{i \in N} d_i\) the sum of claims.
The path of awards of a rule \(\mathcal{R}\) for three claimants \(i,j,k\in N\) is the parametric curve:
$$p(E)=\Bigl\{(\mathcal{R}_i(E,d),\mathcal{R}_j(E,d),\mathcal{R}_k(E,d))\in \mathbb{R}^3:\;E\in[0,D]\Bigr\}.$$