THIRD ANNOUNCEMENT CT2017: INTERNATIONAL CONFERENCE ON CATEGORY THEORY AND ITS APPLICATIONS July 16-22, 2017 University of British Columbia Vancouver, Canada Dear Colleagues, Registration is now open for CT2017. You may register and also reserve accommodation through the PIMS website at http://www.pims.math.ca/scientific-event/170716-c2ictc Please book accommodation early because the room block set aside for CT2017 is limited in size. There is also a special offer for a small block of dorm rooms available for booking until March 1. Note that the deadline for early registration is May 15.See the PIMS website for details. This conference will be held on the University of British Columbia campus. It will begin with a reception at 4pm on Sunday July 16, 2017, and will end at 1pm on Saturday July 22, 2017. All those interested in category theory and its applications are welcome. Invited Speakers D. Hofmann, R. Lucyshyn-Wright M. Menni R. Pare T. Van der Linden We are pleased to announce a Special Invited Lecture at CT2017 by Bill Lawvere. Scientific Committee M. M. Clementino M. Gran G. Janelidze(Chair) P. T. Johnstone J. L. MacDonald S. Mantovani R. H. Street W. P. Tholen Organizing Committee M. Christiansen(Chair) J. L. MacDonald J. Picado Abstracts may be submitted to ct2017@mat.uc.pt from now until May 31, 2017. Selection of speakers from these submissions will be made shortly after that date. A latex template for the abstracts has been included in the webpage with address http://www.mat.uc.pt/~ct2017 I hope to see many of you in Vancouver next summer. Lauchie MacDonald [For admin and other information see: http://www.mta.ca/~cat-dist/ ]