*** CatAlg - 4th Workshop in Categorical Algebra *** Gargnano del Garda (BS) *** 28 May - 1 June 2018 Dear colleagues and friends, This is the second announcement of the conference CATALG2018 on Categorical Algebra: ???Recent developments and future perspectives???, that will take place in Gargnano (GARDA lake), 28 May - 1 June 2018. The workshop will start with the preregistration at the welcome buffet on Monday May 28th, in the late afternoon. Talks are scheduled from Tuesday May 29th, in the morning, till Friday June 1st, around noon. Invited speakers: Maria Manuel Clementino, Alberto Facchini, Xabier Garc??a-Mart??nez, Marino Gran, Pierre-Alain Jacqmin, George Janelidze, Zurab Janelidze, Andrea Montoli, Tim Porter, Diana Rodelo, Benno van den Berg, Walter Tholen. Besides the talks, there will be an open poster session to present and discuss results and investigations in categorical algebra. On the website of the conference CATALG2018 http://math.unipa.it/metere/Gargnano2018/index.html you will find all the relevant information. In case you are interested, recall that the deadline for registration is 15th of April! Looking forward to seeing you in Gargnano, Tim Van der Linden (Universit?? catholique de Louvain) Sandra Mantovani (Universita' degli Studi di Milano) Giuseppe Metere (Universita' degli Studi di Palermo) -- Giuseppe Metere, PhD. Ricercatore di Algebra Dipartimento di Matematica e Informatica Universit?? degli Studi di Palermo [For admin and other information see: http://www.mta.ca/~cat-dist/ ]