Dynamic Social Networks Logic ZoƩ Christoff, Jens Ulrik Hansen Abstract: We introduce a general framework for reasoning about dynamic processes within social networks, such as diffusion phenomena. First, we define the new Dynamic Social Networks Logic, a dynamic extension of standard hybrid modal logic. We then provide a complete axiomatization for this logic and give terminating and complete tableau system for it. Finally, we show how to apply the framework to dynamic processes documented in social networks analysis. Keywords: Modal Logic; Hybrid Logic; Social Networks Analysis; Diffusion in Social Networks