The thing I want

[learnedax]

A tetrahedron, each face marked with three symbols, one at each edge. The three edges adjacent to any face share a common symbol.

The four distinct symbols: I^{3 ⌈}Φ^{⌉ ⌈}e^{⌉ ⌈}π^⌉

Comments

Re: You just might have

[laurion]

They're mathematical representations, particularly useful in advanced maths. You must be familiar with pi at least.