František Kupka

František Kupka (also known as Frank Kupka or François Kupka; 23 September 1871 – 24 June 1957) was a Czech painter and graphic artist. He was a pioneer and co-founder of the early phases of the abstract art movement and Orphic Cubism (Orphism).

Kupka's abstract works arose from a base of realism, but later evolved into pure abstract art. Provided by Wikipedia