Lambdoid Emergence Rene Vestergaard, Jittisak Senachak, Mun'delanji Vestergaard JAIST, Japan We analyse lambdoid gene regulation using the CEq formal method for inferring emergent properties from modal influence graphs. In addition to presenting the most comprehensive mathematical modelling of Bacteriophage lambda to date, our approach allows us to articulate and explore rigourously stated and algebraically concise properties of the way the virus works, and to propose novel explanations of the nature of lambdoid switching, stability, anti-immunity, and more.