*Call for ESSLLI 2026 Lectures and Workshops* TL;DR: ESSLLI seeks courses on diverse topics, each course taking one or two weeks of 90 minutes per day. ESSLLI workshops follow the same structure (5 days, 90 minutes per day) with content assembled from external contributors. Please submit here: https://easychair.org/my/conference?conf=esslli2026 *Important Dates* - October 1, 2025 (AoE): Deadline for submitting course/workshop titles - October 15, 2025 (AoE): Deadline for submitting course/workshop proposals - November 30, 2025 (AoE): Notification sent to course/workshop proposers Note that submitting a proposal requires that the person submitting has an EasyChair profile. *Introduction* Under the auspices of the Association for Logic, Language, and Information (FoLLI), the European Summer School in Logic, Language, and Information (ESSLLI) runs every year. Except for 2021, when the school was virtual, it runs in a different European country each year. It takes place over two weeks in the summer, hosts approximately 50 different courses at levels that run from foundational to introductory to advanced, and attracts around 400 participants from all over the world. In 2026, ESSLLI returns to Prague after exactly 30 years. Since 1989, ESSLLI has been providing outstanding interdisciplinary educational opportunities in the fields of Computer Science, Cognitive Science, Linguistics, Logic, Philosophy, and beyond. It comes from a community which recognizes that advances in our common areas require the contributions of multiple interrelated disciplines. The main focus of ESSLLI is the interface between linguistics, logic and computation, with special emphasis on human linguistic and cognitive ability. Courses, both introductory and advanced, cover a wide variety of topics within the combined areas of interest: Logic and Computation, Computation and Language, and Language and Logic. Workshops are also organized, providing opportunities for in-depth discussion of issues at the forefront of research, as well as a series of invited evening lectures. *Topics and Format* Proposals for courses and workshops at ESSLLI 2026 are invited in all areas of Logic, Linguistics and Computer Science. Cross-disciplinary and innovative topics are particularly encouraged. Each course and workshop will consist of five 90 minute sessions, offered daily (Monday-Friday) in a single week. Proposals for two-week courses should be structured and submitted as two independent one-week courses, e.g. as an introductory course followed by an advanced one. In such cases, the ESSLLI Program Committee reserves the right to accept just one of the two proposals. All instructional and organizational work at ESSLLI is performed completely on a voluntary basis, so as to keep participation fees to a minimum. However, organizers and instructors have their registration fees waived, and are reimbursed for travel and accommodation expenses up to a level to be determined and communicated with the proposal notification. ESSLLI can only guarantee reimbursement for at most one course/workshop organizer, and cannot guarantee full reimbursement of travel costs for lecturers or organizers from outside of Europe. The ESSLLI organizers would appreciate any help in controlling the School's expenses by seeking partial or complete coverage of travel and accommodation expenses from other sources. *Categories* Each proposal should fall under one of the following categories. *Foundational Courses* Such courses are designed to present the basics of a research area, to people with no prior knowledge in that area. They should be of elementary level, without prerequisites in the course's topic, though possibly assuming a level of general scientific maturity in the relevant discipline. They should enable researchers from related disciplines to develop a level of comfort with the fundamental concepts and techniques of the course's topic, thereby contributing to the interdisciplinary nature of our research community. *Introductory Courses* Introductory courses are central to ESSLLI's mission. They are intended to introduce a research field to students, young researchers, and other non-specialists, and to foster a sound understanding of its basic methods and techniques. Such courses should enable researchers from related disciplines to develop some comfort and competence in the topic considered. Introductory courses in a cross-disciplinary area may presuppose general knowledge of the related disciplines. *Advanced Courses* Advanced courses are targeted primarily to graduate students who wish to acquire a level of comfort and understanding in the current research of a field. *Workshops* Workshops focus on specialized topics, usually of current interest. Workshop organizers are responsible for soliciting papers and selecting the workshop program. They are also responsible for publishing proceedings if they decide to have proceedings. *Proposal Guidelines* Course and workshop proposals should closely follow these guidelines to ensure full consideration. Course and Workshop proposals can be submitted by no more than two lecturers/organizers and can be presented by no more than these two lecturers/organizers. Two is actually the preferred number of lecturers/organizers, to secure the course/workshop against unexpected unavailability. All instructors and organizers must possess a PhD or equivalent degree by the submission deadline. Course proposals should mention explicitly the intended course category. Proposals for introductory courses should indicate the intended level, for example as it relates to standard textbooks and monographs in the area. Proposals for advanced courses should specify the prerequisites in detail. Proposals of Courses given at ESSLLI in the previous year will have a lower priority of being accepted in the current year. Proposals must be in PDF format and include all the following information: - Personal information for each proposer: Name, affiliation, contact address, email, homepage (optional) - General proposal information: Title, category - Contents information: - Abstract of up to 150 words - Motivation and description (up to two pages) - Tentative outline - Expected level and prerequisites - Appropriate references (e.g. textbooks, monographs, proceedings, surveys) - Information required of course proposers: - Will the course appeal to students outside of the main discipline of the course? - What experience does the proposer have in presenting an intensive one-week interdisciplinary setting? - What evidence is there that the course proposer is an excellent lecturer? - Information required of workshop organizers: - Information on relevant preceding meetings and events, if applicable. - Information about potential external funding for participants. A typical proposal fits 3 pages. *Submission Information* By October 1, 2025 (AoE), proposers are asked to submit at least the name(s) of the instructor(s), the ESSLLI area+course level and a title and short abstract for the proposed course/workshop. By October 15, 2025 (AoE), course proposers must complete their submission by uploading a PDF with the actual proposal as detailed above. *Submission Portal* Please submit your proposals to easychair: https://easychair.org/my/conference?conf=esslli2026 <https://easychair.org/cfp/ESSLLI2026> *EACSL Sponsorship* The EACSL will support one Logic and Computation course or workshop addressing topics of interest to Computer Science Logic (CSL) conferences. The selected course or workshop will be designated an EACSL course/workshop in the programme. If you wish to be considered for this, please indicate it in your proposal.