These lecture notes. prepared for the 2024 XQCD PhD. provide an introduction to the analytic structure of an equation of state near a second-order phase transition and its most prominent landmark: the Yang-Lee edge singularity. In addition to discussing general properties. https://www.bekindtopets.com/hot-mega-Jeffers-Economy-600D-Royal-Blue-Teal-Plaid-Horse-Blanket-super-sale/