We are deeply saddened to share the news of the passing of Søren Glud Johansen (1944–2025), Associate Professor Emeritus at the Department of Mathematics, Aarhus University. Søren was a cherished colleague, mentor, and friend who devoted over five decades to academia and to the development of the Mathematics-Economics programme at Aarhus.
After completing his cand.oecon. degree at Aarhus University, Søren joined the Department of Mathematics on 1 August 1970, embarking on a remarkable career marked by dedication to teaching, research, and student mentorship.
He played a pivotal role in establishing and nurturing the Mathematics-Economics programme from the early 1970s, helping it gain international recognition and produce generations of graduates who thrived in both academia and industry.
Søren was known for his strong character, sharp intellect, and commitment to precision — whether in research, teaching, or administrative work. He took great pride in his students’ achievements and was always ready with thoughtful guidance and encouragement. Beyond academia, Søren enjoyed international scientific conferences — including those of the International Society for Inventory Research (ISIR) — where he was held in high esteem by his peers.
His kindness, humor, and genuine interest in others made him a beloved figure in the department and beyond. Søren’s legacy will live on through the countless students and colleagues he inspired throughout his distinguished career.
From: math.au.dk
“We are deeply saddened by the passing of Søren Glud Johansen. Søren was not only a leading scholar in inventory research but also a valued and active member of the ISIR community for many years.
His pioneering work on lost-sales models, stochastic lead times, and emergency ordering strategies shaped the foundations of modern inventory theory. Søren’s insights enriched countless ISIR symposia, where his thoughtful questions and warm collegiality made him a cherished presence. He was always generous with his time and ideas, mentoring young researchers and fostering collaboration across our field. Søren’s contributions will live on in his research and in the friendships he built within ISIR. We extend our heartfelt condolences to his family and colleagues. He will be deeply missed by all of us.”
Sandra Transchel, ISIR President
