n+1, the nerdy-cool literary journal known for its dense, idiosyncratic writing style and well-attended parties, has spawned a sibling. Paper Monument, a journal of contemporary art, will launch this Saturday with a party in Tribeca. Every New Yorker factchecker you know will be there. Each issue of Paper Monument will combine essays with art commissioned especially for the magazine. The first issue includes criticism on the painters Tacita Dean, Neo Rauch, and Tomma Abts, as well as an essay on art and real estate in New York; it includes portfolios by Jon Pylypchuk, Hilary Harnischfeger, Peter Peri, and Dan Torop. The editors of the magazine, Dushko Petrovich and Roger White, are both painters. Mr. Petrovich was the regular art critic for n+1 and eventually started editing a group of other critics for n+1’s Web site. Eventually he and Mr. White, a friend, decided they should publish their own magazine on an alternating schedule with n+1, which publishes every six months. Paper Monument’s main innovation is to run commissioned art on its own, without accompanying criticism. And unlike other art magazines, they hope to be supported by subscribers, not advertisers. “Most art magazines are totally overrun by glossy ads, like fashion magazines, and we want to foreground the content,” Mr. Petrovich said.