Hans Albert Walter counts among the most important representatives of a form of art that can literally be described as "Number Art", since as of the 1970s the most famous works by the painter and graphic artist, who was born in Stettin and trained in Munich and Bremen, always show numbers. After an early period of creation that was coined by a geometrical-abstract tendency and brought forth paintings, silkscreens in colors and linocuts, Hans Albert Walter found his way to numbers, which, henceforth inhabited the image surface. The normative structures are characteristic of the work of Hans Albert Walter, the accurately outlined columns of figures always make for a well-arranged cosmos, which does not follow a clear mathematical system, however, with its contemplative grid it asks the observer to immerse into the image. It was a kind of lucky coincidence that Hans Albert Walter, all in line with his art in which the figure zero also played an important role, often showed works with the famous artist group "ZERO". Works by Hans Albert Walter, who has been honored with numerous prizes, have been in the focus of many exhibitions and publications.