ESF-ERCOM Conference Chairs Day  at the ESF Headquarters (Brussels, Belgium). March 2010.

Stavros Kourkoulis and Renzo Ricca (front row, left) with a group of Greek students visiting the Mathematics Department (U. Milano-Bicocca, Milan). March 2010.

Gunnar Hornig, Mitch Berger and Renzo Ricca in Dresden (Germany). May 2010.

Renzo Ricca and Xin Liu at Renzo’s home-place (Cogne, Aosta Valley, Italy). November 2010.

De Witt Sumners and Renzo Ricca at the “De Giorgi” Mathematical Research Center (Scuola Normale Superiore – Pisa, Italy). July 2011.

Bertrand Duplantier and Renzo Ricca in Tuscany (Italy). July 2011.

ESF-EMS conference on “Knots and Links: From Form to Function” (Scuola Normale Superiore – Pisa, Italy). July 2011.

Renzo Ricca and Otto Rössler in the Halkidiki peninsula (Greece). July 2011.

Renzo Ricca and Jun O’Hara at the Scuola Normale Superiore (Pisa, Italy). July 2011.

Renzo Ricca and Kishore Marathe at the Scuola Normale Superiore (Pisa, Italy). July 2011.

Jason Cantarella, Eleni Panagiotou, Renzo Ricca and Isabel Darcy in Tuscany (San Quintino, Italy). July 2011.

Renzo Ricca and Kenneth Millett at the University of California (Santa Barbara). June 2012.

Renzo Ricca and Vaughan Jones at the Kavli Institute (U. California at Santa Barbara). June 2012.

Tom Kephart, Keith Moffatt, Henryk Kudela and Renzo Ricca at the Newton Institute (Cambridge, UK). July 2012.

IUTAM Symposium on “Topological Fluid Dynamics” (Newton Institute, Cambridge, UK). July 2012.

Yoshi Kimura, Konrad Bajer, Keith and Linty Moffatt, Marie Farge, Renzo Ricca, Stephen Childress and Satoshi Tanda (Newton Institute, Cambridge, UK). July 2012.

Andrew Gilbert, Andrzej Herczynski and Renzo Ricca in Cambridge (UK). August 2012.

Renzo Ricca with Tugrul Hakioglu, Antonio Ferriz Mas and Nobumitsu Yokoi at the Institute for Theoretical and Applied Physics (Marmaris, Turkey). September 2012.

Renzo Ricca, Simon Candelaresi (center) and Axel Brandenburg for Simon’s doctoral degree ceremony (Stockholm, Sweden). December 2012.

Renzo Ricca and Michael Berry at dinner in Trinity Hall College (Cambridge, UK). December 2012.

Diane and Louis Kauffman, Chiara Oberti and Renzo Ricca (Cambridge, UK).  December 2012.

Renzo Ricca and Hidenori Hasimoto in Fukuoka (Japan). March 2013.

David Ruelle, Marie Farge and Renzo Ricca in Paris. March 2013.

Renzo Ricca, Giovanni Gallavotti and Franco Magri in Milan. June 2013.

Gregory Falkovich, Renzo Ricca and Grigory Barenblatt at the conference banquet in Moscow. November 2013.

After dinner gathering at Dmitry Millionshchikov’s home in Moscow. From left to right: Claude Cambon, Renzo Ricca, Keith Moffatt, Michael Monastyrsky, Tatiana Balakhovskaia (Director of the Kapitza museum) and Dmitry Millionschikov, grandson of M.D. Millionshchikov (1913-1973). November 2013.

John Sullivan, Renzo Ricca and Dorothy Buck at the Max Planck Institut (Leipzig, Germany). March 2014.

Darryl Holm and Renzo Ricca in Port Jefferson (New York). May 2014.

Daniel Peralta-Salas and Renzo Ricca at the Simons Center (Stony Brook, NY). May 2014.

Keith Moffatt and Renzo Ricca at the Simons Center for Geometry and Physics (Stony Brook, NY), May 2014.

Renzo Ricca and Norbert A’Campo in Strasbourg (France). June 2014.

Renzo Ricca, Robert Penner and Athanase Papadopoulos at a City Hall reception in Strasbourg (France). June 2014.

Alexey Sossinsky and Renzo Ricca at the Institut de Recherche Mathématique Avancée (U. Strasbourg, France). June 2014.

Faculty meeting at the Beijing-Dublin International College (BDIC). From left to right: Xuebing Dong, Xinying Hu, Xin Liu (Mathematics Programme Coordinator), Renzo Ricca, Zhongliang Liu (BDIC Principal), Mei Liao, Lu Dai (Beijing, PRC). March 2015.

Zhen-Su She (Director of the State Key Laboratory of  Turbulence and Complex Systems) and Renzo Ricca in the park of Peking University (Beijing, China). April 2015.

Henrik Lundstedt, Renzo Ricca and Brigitte Schmieder celebrating Henrik’s birthday (Lund, Sweden). June 2015.

De Witt Sumners, Mike Waterman and Renzo Ricca in the “Petite France” quarter of Strasbourg (France). September 2015.

Constantinos Siettos, Renzo Ricca and Lucia Russo at ICNAAM 2015 (Rhodes, Greece). September 2015.

IUTAM Symposium on “Helicity, Structures and Singularity in Fluid and Plasma Dynamics” at the Istituto Veneto di Scienze, Lettere ed Arti (Venice). April 2016.

Paolo Orlandi and Renzo Ricca at the Istituto Veneto di Scienze, Lettere ed Arti (Venice). April 2016.

Dinner at the Fireplace Hall in the House of Scientists of Academgorodok. Clockwise, from left to right: Valery Okulov, David Wood, April and William George, Thomas Leweke, Knud Meyer, Pavel Kuibin, Igor Naumov, Jere Mäkinen, Renzo Ricca, Sergey Alekseenko, Tomoaki Kunugi, Jens Sørensen. (Novosibirsk, Russia). May 2016.

Valery Okulov, Renzo Ricca, David Wood, Yasuhide Fulumoto and Pavel Kuibin, outside the Kutateladze Institute (Academgorodok, Novosibirsk, Russia). May 2016.

Renzo Ricca and De Witt Sumners in the shadows of the Wakulla Springs park (Tallahassee, USA). June 2016.

Jean-Luc Thiffeault and Renzo Ricca at the 11th AIMS Conference (Orlando, USA). July 2016.

Renzo Ricca and Mark Dennis at the International Conference “Knots in Hellas 2016” (Ancient Olympia, Greece) July 2016.

Xin-Fei Li and Renzo Ricca on the Mutianyu Great Wall. September 2016.

Guest Professorship ceremony: Renzo Ricca and Lijia Cai, Vice Principal of the Beijing-Dublin International College (BDIC) (Beijing U. of Technology, Beijing, China). September 2016.

Internationalisation Committee of the University of Milano-Bicocca (Milan). September 2016.

Luca Biferale and Renzo Ricca in Rome. March 2017.

Evgenii Kuznetsov and Renzo Ricca in Carry-le-Rouet (Marseille, France). June 2017.

Maria Stella Mongiovì and Renzo Ricca in Palermo (Sicily). February 2018.

Bruno Coppi and Renzo Ricca at the Italian National Research Council headquarters (Rome). June 2018.

From left: Renzo Ricca, Bianca Di Blasio, Kevin Payne, Terence Tao, Pablo Spiga, Bernhard Ruf (Milano). June 2018.

Master course on “Topological Fluid Dynamics” at the Beijing University of Technology (Beijing, China). October 2018.

“Zuccher-fest” in Bicocca: Renzo Ricca, Simone Zuccher, Matteo Foresti, Hao Guan, Franz Schlöder, Xinfei Li, Massine El Kabir, Alice Roitberg (Milan). November 2018.

Arkady and Alla Tsinober with Renzo Ricca near Duomo (Milan). December 2018.

Mariel Vazquez, Renzo Ricca and Elizabeth Denne at the Institute for Mathematics and its Applications (IMA) (Minneapolis, USA). June 2019.

Jose-Carlos Gomez-Larrañaga and Renzo Ricca in Bern (Switzerland). July 2019.

Antti Niemi and Renzo Ricca at the Beijing-Dublin International College (Beijing U. of Technology, Beijing, China). September 2019.

Working group on simulation of vortex tangles at BJUT; standing, from left to right: Hao Guan, Zhiwen Chang, Eric Rawdon, Carlo Barenghi, Renzo Ricca, Xin Liu; sitting: Rob Scharein (Beijing). September 2019.

Lecturers and students at X’ian (China). September 2019.