This book constitutes the proceedings of the 15th International Conference on Relational and
Algebraic Methods in Computer Science RAMiCS 2015 held in Braga Portugal in September
October 2015. The 20 revised full papers and 3 invited papers presented were carefully selected
from 25 submissions. The papers deal with the theory of relation algebras and Kleene algebras
process algebras fixed point calculi idempotent semirings quantales allegories and dynamic
algebras cylindric algebras and about their application in areas such as verification
analysis and development of programs and algorithms algebraic approaches to logics of programs
modal and dynamic logics interval and temporal logics.
