Original: 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.
Simplified: Husserl's formal analysis of language also inspired StanisÅ aw LeÅ niewski and Kazimierz Ajdukiewicz in the development of categorial grammar.