| http://www.w3.org/ns/prov#value | - He also attended the International Congress of Mathematicians in Heidelberg in August 1904 and four years later was a plenary speaker at the International Congress of Mathematicians in Rome giving the address Le matematiche in Italia nella seconda met?? del secolo XIX. In 1909 he gave a series of lectures at Clark University in Massachusetts, United States, and received an honorary degree from the
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