In March 2026, Ahmet Ozdemir developed a formal equivalence definition for constraint systems in optimization within the powdr-labs/powdr repository. This work clarified when two intermediate representations (IRs) can be considered interchangeable, directly impacting the reliability of optimization flows. Ahmet applied formal methods and deepened documentation, referencing the new equivalence concept throughout the optimizer’s technical materials. The approach involved close collaboration with other contributors to ensure clarity and adoption across teams. By establishing a rigorous foundation for IR equivalence, Ahmet enabled more robust reasoning about constraint interactions, supporting future optimization passes and maintainable tooling using Markdown and formal specification techniques.