He was the first living Brazilian artist to have a solo show at the Museum of Modern Art in New York

An early interest in comics never left him, as could be seen in his colourful figurative work that reflected a love of robots and toys, as well as an admiration for El Greco

The activist helped develop perhaps the most well known symbol of HIV and Aids awareness: the red ribbon

The self-made billionaire helped shape the Los Angeles art scene, while clashing with most of its prominent museum leaders

Billionaire art collector, businessman and philanthropist founded the museum that bears his name and helped shore up Disney Concert Hall, Lacma and MOCA

A dedicated mentor, he also delighted in provocative enigmas in wide-ranging mediums

The Norwegian collector took an “early chance” on Damien Hirst and in 2001 bought Jeff Koons’s Michael Jackson and Bubbles sculpture for a then record $5.6m

The restorer expertly honoured the "oneness of a work of art" and always balanced its historical and aesthetic qualities

The sculptor and painter was known for his disarming Alien and Knight sculptures, installed in Greece and abroad

The son of the Sobey’s grocery chain founder was a huge supporter of artists, and helped establish the country’s main art prize

After causing a sensation early in his career in the 1960s, the sculptor and visual artist retreated from the gallery scene, and was only recently re-acknowledged

The painter, sculpture and graphic designer helped define the Modern style for a generation

After purchasing and renovating the 1883 Nickerson House, he opened the historic mansion as an art and design museum

The historian built a seed collection of 500 works by women artists, as well as documents and research, with the hope of filling a gap in the art canon

Bern's Zentrum Paul Klee will devote an exhibition to the artist this summer

The No Wave pioneer was also know for her lo-fi pinhole images

His successor at the London institution pays personal tribute to the persuasive and effective British curator, writer and critic

Scholar with an international outlook who was director of the Henry Moore Foundation and executor of his mother-in-law, Barbara Hepworth

Frances Beatty remembers a mentor who would rather give you a lecture on Max Beckmann or Peter Saul than sell you a Van Gogh, but who could do both

New York gallerist railed against auction houses, the inflation of prices and reputations, the industrial expansion of the art market, while still doing great business

Throughout his life, he continued to paint and write books, showing his literature-infused art in New York just last year

In response to the stock market crash, Di Modica illegally installed Charging Bull in front of the New York Stock Exchange in 1989

Although overlooked by art institutions until only recently, she continued to create work about artificial systems and bureaucracies during a 30-year career in Lima's customs office

Formed a peerless photography collection for the J Paul Getty Museum and curated the landmark 1989 Royal Academy exhibition to mark 150 years of the art form

Through his community programmes and art spaces, the artist and organiser “profoundly impacted the daily lives” of people in the city

His influential texts and exhibitions looked beyond Europe and the US to art from Latin America and Asia

The Met director Max Hollein pays tribute to the late gallery owner and collector, who also promoted artists from Max Beckmann to Peter Saul

The uncompromising artist turn down many exhibition offers but never veered from his vision for a work

One of the first pupils of Harvey Littleton at the University of Wisconsin-Madison, he brought the studio glass movement to Britain, and beyond, in the mid-1960s