The artist’s bulbous tubular forms share something with Abstract Expressionism’s paint-as-paint pours. Like Pollock’s late abstractions, Hankwitz’s art expands beyond the painting’s edges.

Trees depicted in the artwork of famous painters like Leonardo da Vinci ... and 20th-century abstract art. They found that the values of α in these artworks range from 1.5 to 2.8, similar to ...