The Complete Intersection Theorem for Systems of Finite Sets

@article{Ahlswede1997TheCI,
  title={The Complete Intersection Theorem for Systems of Finite Sets},
  author={Rudolf Ahlswede and Levon H. Khachatrian},
  journal={Eur. J. Comb.},
  year={1997},
  volume={18},
  pages={125-136}
}
We are concerned here with one of the oldest problems in combinatorial extremal theory. It is readily described after we have made a few conventions. ‫ގ‬ denotes the set of