The document discusses postmodernism in literature. It provides information on notable postmodern authors such as Thomas Pynchon, Kurt Vonnegut, and Joseph Heller. Postmodern literature is characterized by themes of fragmentation, unreliable narration, self-reflexivity, and intertextuality. It emerged strongly in the United States in the 1960s in response to modernism and World War II. Theoretical postmodernism encompasses theories by thinkers like Roland Barthes and Jacques Derrida, while cultural postmodernism includes postmodern elements in film, literature, and visual arts.