@inproceedings{EPTCS266.9, title = "Double Dilation $\neq$ Double Mixing (extended abstract)", author = "Zwart, Maaike and Coecke, Bob", year = "2018", booktitle = "{\rm Proceedings 14th International Conference on} Quantum Physics and Logic, {\rm Nijmegen, The Netherlands, 3-7 July 2017}", editor = "Coecke, Bob and Kissinger, Aleks", pages = "133-146", publisher = "Open Publishing Association", series = "Electronic Proceedings in Theoretical Computer Science", volume = "266", doi = "10.4204/EPTCS.266.9", }