Husserl 's formal analysis of language also inspired StanisÅ aw LeÅ niewski and Kazimierz Ajdukiewicz in the development of categorial grammar . StanisÅ aw LeÅ niewski and Kazimierz Ajdukiewicz were inspired by Husserl 's formal analysis of language . Accordingly , they employed phenomenology in the development of categorial grammar .