In the first Logical Investigation, Husserl is concerned with what will count as the identity of a meaning, given that expressions of meanings become and perish in the flux of the experience of expression-users. While Husserl uses the term "synthesis" only once in LU i, I will argue that Husserl's accounts of meaning and intentionality, science and perception, expressions and consciousness, are dominated by the problematics of what Husserl calls ""unity in multiplicity'" (102).