The round numbers in the title of this traveling anthology exhibition refer to equal sets of Soviet and American painters, all of whom are under 40, commingled in the show’s ranks. The Soviets—Yurii Albert, Vladimir Mironenko, Yurii Petruk, Leonid Purygin, Andrei Roiter, Sergei Shutov, Alexei Sundukov, Vadim Zakharov, Anatolii Zhuravlev, and Konstantin Zvezdochetov—are all males living in Moscow. The American artists are David Bates, Ross Bleckner, Christopher Brown, April Gornik, Peter Halley, Annette Lemieux, Rebecca Purdum, David Salle, Donald Sultan, and Mark Tansey, all but two of whom live