They found that the trees depicted in the artworks, even when abstract or stylistic ... apply math to trees in art.

Despite being a somewhat abstract representation ... if this value had something to do with tree recognisability in art, the researchers used two paintings by Piet Mondriaan.

Leonardo da Vinci observed that tree limbs preserve their thickness ... Edo period Japanese painting, and 20th-century abstract art. They found that the values of α in these artworks range ...