Third Space - Edward Soja: Edward Soja is known for his work on spatial theory, where he discusses the concept of "third space" as a space of enunciation and negotiation of cultural meanings.
Hybridity - Homi Bhabha: Homi Bhabha is a central figure in postcolonial theory, and he introduced the concept of hybridity to describe the creation of new transcultural forms within the contact zone produced by colonization.
Reception aesthetics - Wolfgang Iser: Wolfgang Iser is a key figure in reception aesthetics, a branch of literary theory that focuses on the reader's role in interpreting texts.
Langue - Ferdinand de Saussure: Ferdinand de Saussure is a foundational figure in modern linguistics, and he introduced the concept of "langue" to describe the underlying structure of a language system.