Andrzej Stasiak and Renzo Ricca touring on the Leman lake (Lausanne, Switzerland). August, 2000.

Lecturers at the INIMS-NATO workshop on “Geometry and Topology of Fluid Flows” held at the Newton Institute. Standing (from left): Gunnar Hornig, Alexander Shnirelman, Misha Misiolek, Hassan Aref, Phillip Boyland, Keith Moffatt, Stephen Childress. Ed Spigel, Richard Pelz, Remi Langevin, Claude Weber. Sitting (from left): Shigeo Kida, Misha Monastyrsky, Renzo Ricca, Lou Kauffman, Mitch Berger (Cambridge, UK). September, 2000.

Renzo Ricca, Natalia Denisova, Hassan Aref and Michael Monsstyrskii contemplating Sokes’ Bust (Pembroke College, Cambridge, UK). October 2000.

Participants of the programme on “Geometry and Topology of Fluid Flows” (Newton Institute, Cambridge, UK). October, 2000.

Renzo Ricca, Phillip Drazin and Susan Friedlander in the library of the Newton Institute (Cambridge, UK). October 2000.

Boris Khesin and Renzo Ricca during the programme “Geometry and Topology of Fluid Flows” held at the Newton Institute (Cambridge, UK). November 2000.

From left: a Russian colleague with Alexander Ruzmaikin, Renzo Ricca and Natalia Denisova at the Newton Institute (Cambridge, UK). November 2000.

From left: Jun O’Hara, Mitch Berger and Arrigo Cellina at the CIME Summer School on “Topological Fluid Mechanics” (Cetraro, Italy). June, 2001.

Keith Moffatt, in the sunshine of Cetraro (Italy). June, 2001.

From left: Gregory Buck, De Witt Summners and Lou Kauffman in Cetraro (Italy). June 2001.

Shigeo Kida, Renzo Ricca and Richard Pelz in Zakopane (Poland). August, 2001.

Renzo Ricca and Yasuhide Fukumoto on the volcano area of Mount Aso (Kyushu Island, Japan). October, 2001.

Massimo Germano, Keith Moffatt and Renzo Ricca at the ceremony for the Panetti Gold Medal award to Keith Moffatt (Turin Academy of Sciences, Torino). November 2001.

John Gibbon and Renzo Ricca at the Mathematical Research Institute (Warwick, UK). April 2004.

Workshop on “Coherent Structures” at the Mathematics Institute of Warwick University (UK). September, 2005.

Francesca Maggioni, Keith Moffatt and Renzo Ricca at the Department of Mathematics and Applications (U. Milano-Bicocca). November, 2006.

Koji Okhitani and Renzo Ricca in Aussois (France). June, 2007.

Renzo Ricca and Ruben Pasmanter at breakfast in Aussois (France). June, 2007.

Renzo Ricca and Rob Kusner at the University of Milano-Bicocca (Milano, Italy). March 2008.

Renzo Ricca (center), Francesco Calogero (left) and Antoni Sym at the Banach Mathematics Center (Bedlewo, Poland). April 2008.

Ralph Abraham and Renzo Ricca in Milano. May 2008.

Michael Monastyrskii and Renzo Ricca in Trinity College (Cambridge, UK). July 2008.

From left: Gaetano Giaquinta, Milan Micunovic, Renzo Ricca and Paolo Podio-Guidugli at Villa Citelli (Catania, Italy). October 2008.

Conference on “Knot Theory and Its Applications to Physics and Biology” at ICTP (Trieste, Italy). May 2009.

Radmila Sazdanovic (left), Renzo Ricca and Ruth Lawrence at ICTP (Trieste, Italy). May 2009.

Renzo Ricca, Michael Monastyrskii (center) and Sergej Novikov in Prague (Czech Republic). August, 2009.

Renzo Ricca, Makoto Tsubota (center) and Carlo Barenghi in Verona (Italy). September 2009.

Konrad Bajer (left), Natalia Berloff and Renzo Ricca celebrating the 50th anniversary of DAMTP (King’s College, Cambridge, UK). September 2009.