This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
ary Boolean functions matrix wec E.svg Walsh equivalence classes red green The functions are represented as red squares in matrix organized like cube Hasse diagram This is also sec matrix Its rows show ary Boolean functions of weight Red and green fields are both seen as ones here Inkscapehand Boolean Binsvg own Matecode ary