**mu** (**μ**) is a number which can be written as **0/0**, **0*∞**, **∞-∞**, **0 ^{0}**,

**1**,

^{∞}**∞**,

^{0}**(-1)**,

^{∞}**0**, etc. Conventional mathematics treats this quantity as "undefined". It may also be interpreted as an operator to undo wavefunction collapse and then re-collapse with arbitrary choice, allowing one to jump to alternate logical branches.

^{i}