Toshiko Yuasa Laboratory (TYL) at KEK is organizing a symposium to celebrate the life and work of Dr. Denis Perret-Gallix (1949-2018). The symposium co-hosted by AAA will take place on April 2, 2019 from 1:30 pm at the Seminar Hall in bldg. 3, KEK Tsukuba campus. It will feature talks dedicated to the memory of Dr. Perret-Gallix. We cordially invite you to the event. Dr. Denis Perret-Gallix initiated a number of collaborations between France and KEK in high energy physics. Denis played a leading role in the France-Japan Particle Physics Laboratory (FJPPL), now named TYL, which was established in 2006.