bent function
A Boolean function f: Z ₂ⁿ→ Z ₂ whose Walsh transform has constant absolute value.
Noun
- A Boolean function f: Z ₂ⁿ→ Z ₂ whose Walsh transform has constant absolute value.
Origin
So called because they are as different as possible from all linear functions (the simplest or "straight-line" functions) and from all affine functions (which preserve parallel lines).