In her seminal work Gender Trouble, Judith Butler utilizes post-structuralist and phenomenological concepts to deconstruct traditional notions of gender identity and explore the ways in which gender is constructed through performance. Thus, Butler has a majir role in bringing the ideas of thinkers such as Foucault and Derrida into gender theory.
Butler's work is heavily influenced by the post-structuralist theories of Foucault, particularly his concept of power as a diffuse and pervasive force operating through discursive practices. Butler argues that gender, like power, is not a fixed or essential characteristic of an individual, but rather a social construct which is continually produced and reproduced through the performance of gendered behavior. In Gender Trouble and elsewhere these ideas are translated into an explanation of gender realtions.
In addition to her use of post-structuralist theory, Butler draws on phenomenology to explore the subjective experience of gender. Phenomenology emphasizes the importance of lived experience and the subjective perception of the world, and Butler applies this framework to gender identity, arguing that individuals' perceptions of their own gender are shaped by their social and cultural context.
Overall, Butler's use of post-structuralism and phenomenology in Gender Trouble represents a major contribution to the field of gender studies. By deconstructing traditional notions of gender identity and exploring the ways in which gender is constructed through performance, Butler provides a framework for understanding the complex and dynamic nature of gender in contemporary society.