 In post-Avicennian philosophy, the claim that mathematical objects are mental (or estimative or imaginative) became the most popular view and was increasingly emphasized by different thinkers. The inclination towards this approach was partially due to powerful criticisms of Avicenna’s account of the ontology of mathematics. For instance, Suhrawardī offered strong objections to the existence of numbers in the physical world as accidents of sensible things. Consider a group of four individuals. Avicenna thinks that four-ness (ʾarbaʿīya) is an accident of these four persons. But Suhrawardī finds it untenable. He argues that