Sigmar Polke

Roy Lichtenstein painting hidden in private collection for 25 years to be unveiled

Frightened Girl is part of a London exhibition devoted to the Ben-Day dot technique commonly used in pulp fiction comics

Pinault procures Polke paintings

Billionaire is set to open new Venice museum in 2009


What Tate paid for art 2004-06

A complete list of Tate's acquisitions from the last two years, and what they paid for them

What's on in New York: Lelong remembers Mendieta while Polke shocks chauvinists

Serra celebrates at Gagosian’s while Grey Gallery plays dress-up