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This book constitutes the proceedings of the First International Workshop on Dynamic Logic, DALI 2017, held in Brasilia, Brazil, in September 2017.
Both its theoretical relevance and practical potential make Dynamic Logic a topic of interest in a number of scientific venues, from wide-scope software engineering conferences to modal logic specific events. The workshop is promoted by an R&D project on dynamic logics for cyber-physical systems. The 12 full papers presented in this volume were carefully reviewed and selected from 25 submissions. The workshop is based on the project DaLí - Dynamic logics for cyber-physical systems: towards contract based design.

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Undecidability of Relation-Changing Modal Logics.- Axiomatization and computability of a variant of iteration-free PDL with fork.- A Dynamic Logic for Learning Theory.- Layered logics, coalgebraically.- A Dynamic Informational-Epistemic Logic.- Dynamic Epistemic Logics of Introspection.- Logics for Actor Networks: a case study in constrained hybridization.- Parity Games and Automata for Game Logic.- Model checking against arbitrary public announcement logic: A first-order-logic prover approach for the existential fragment.- Dynamic Logic: A personal perspective.- The Creation and Change of Social Networks: a logical study based on group size.

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