2666	 On Lions Counter Example for Gotlieb s Method for the Construction of School Timetables	 The timetable problem is an essentially discrete problem. Although the discrete problem may have no feasible solution there may exist a solution to the equivalent continuous problem. An example is given for which the nondiscrete solution can be interpreted as a set of timetables differing from week to week which together satisfy the long-term requirements of the timetable problem. combinatorial multi-index problem necessary conditions schedule school timetable timetable
