https://en.wikipedia.org/wiki/History_of_mathematics History of mathematics 21st century Most mathematical journals now have online versions as well as print versions, and many online-only journals are launched. There is an increasing drive toward open access publishing, first popularized by the arXiv. https://en.wikipedia.org/wiki/History_of_mathematics History of mathematics 21st century In 2000, the Clay Mathematics Institute announced the seven Millennium Prize Problems, and in 2003 the Poincare conjecture was solved by Grigori Perelman (who declined to accept an award, as he was critical of the mathematics establishment). Most mathematical journals now have online versions as well as print versions, and many online-only journals are launched. There is an increasing drive toward open access publishing, first popularized by the arXiv. 以上
