Discussing her work, which is starting to garner national art-world attention, Riepenhoff circles back repeatedly ... but then the waves and the wind come in as they will. I can never understand ...

Like a lot of abstract concepts ... The second part shows how those circles moving together describe a square wave with ripple. If you haven’t been able to visualize a sum of sine waves ...

The art of selling out and how to relate to other people when your work is so solitary are subjects on the mind of painter Mary Heilmann in the documentary “Waves, Roads, & Hallucinations.” ...

The American Abstract Expressionist Helen Frankenthaler ... Until now, the impact of the other artists in her circle has been less well understood, but this is set to change with a sweeping ...