 Taking a cue from Frege, some philosophers have argued in favor of a two-sided dependence of constituents of states of affairs (and a many-sided dependence of property tropes in trope bundles) as a non-relational way of accounting for the unity of such complexes. Baxter (2001), for instance, has proposed that the unity of particular and universal should be analyzed as partial identity. For Baxter, both particulars and universals have “aspects”. Different instances of one and the same universal are different aspects of a universal; spatial parts of particulars are their different aspects. Particulars and universals can be partially identical by overlapping in their aspects. Baxter writes: 