We are pleased to invite you to submit your work to the Special Issue “Recent Advances in Bilevel Optimization” in the EURO Journal on Computational Optimization (EJCO), organized on the occasion of ICBO 2026. The Special Issue aims to showcase recent theoretical, methodological, and computational advances in bilevel optimization, including topics such as mixed-integer, nonlinear, stochastic, and robust bilevel optimization, as well as connections with inverse optimization, game theory, and machine learning. Contributions addressing applications in areas such as energy, security and interdiction, transportation, and artificial intelligence are also particularly welcome. While papers presented at ICBO 2026 are especially encouraged, submissions are open to the entire bilevel optimization community, and participation in the conference is not required. Submission deadline: December 15, 2026 More information, including submission instructions and the list of Guest Editors, is available here: https://bileveloptimization.org/icbo/2026/special-issue.html <https://mx.uni-trier.de/fmlurlsvc/?fewReq=:B:JVMxOj49MS19NjklOy1ibzY7OjE7Oi14Ymxlan9+eW42bTM8aTk8O2o+PWg6aDhvbW9vaWpuM208OmhtPj04bWg9bWo4MjNobi1/Njo8Mjo5OTgyOjwtemJvNj0yPkJJfl5bOzo5Mjs4Jj0yPkJJfl5ZOzo5Mjs4LXloe382Zmp5f2JlJXhoY2Zib39LfmViJn95Ym55JW9uLWg2Oy1jb2c2Ow==&url=https%3a%2f%2fbileveloptimization.org%2ficbo%2f2026%2fspecial-issue.html> We encourage you to consider contributing and would be grateful if you could also share this call with colleagues who may be interested. We look forward to receiving your submissions! Best regards, The Committee of the Bilevel Optimization Society (COBOS) ********************************************************** * * Contributions to be spread via DMANET are submitted to * * DMANET@zpr.uni-koeln.de * * Replies to a message carried on DMANET should NOT be * addressed to DMANET but to the original sender. The * original sender, however, is invited to prepare an * update of the replies received and to communicate it * via DMANET. * * DISCRETE MATHEMATICS AND ALGORITHMS NETWORK (DMANET) * http://www.zaik.uni-koeln.de/AFS/publications/dmanet/ * **********************************************************