Self-complementary ideals
The blue picture above can be thought of as a collection of cubes of unit side length stacked in a 6×6×6 box. If two cubes touch face to face, then the cube that is closest to the bottom back corner …
The blue picture above can be thought of as a collection of cubes of unit side length stacked in a 6×6×6 box. If two cubes touch face to face, then the cube that is closest to the bottom back corner …