Formula: Π = π(idea₁ × idea₂ × ... × ideaₙ)

The world of ideas is the product of an infinite number of ideas, represented by the never-ending nature of π.

Plato's theory of forms or ideas, most notably discussed in "The Republic," posits that non-physical (but substantial) forms represent the most accurate reality. The mathematical expression Π = π(idea₁ × idea₂ × ... × ideaₙ) captures the multiplicative nature of the forms. Here, π is not just a mathematical constant but symbolizes the perfection and infinite nature of the forms. The product of ideas suggests that the world of forms is a complex interconnection of pure ideas, each interacting with others to constitute reality. It encapsulates Plato's view that the realm of forms is eternal and unchangeable, underpinning the physical world with a timeless, unyielding structure.