留白，又称“余玉”，是中国画中重要的艺术表现手法，始于唐代，盛于宋代。 Blank space, also known as "Yu Yu", is a significant artistic technique in Chinese ...

The painting hangs in a gallery examining artists’ use of math — one of the show’s five informative segments. The others consider color in motion, space age abstraction, optics and ...