A famous math problem that has vexed mathematicians for decades has met an elegant solution by Cornell Univ. researchers. Graduate student Yash Lodha, working with Justin Moore, professor of mathematics, has described a geometric solution for the von Neumann-Day problem, first described by mathematician John von Neumann in 1929.
Lodha presented his solution at the London Mathematical Society’s Geometric and Cohomological Group Theory symposium and has submitted the work to a journal. “People were very excited by this,” Lodha says. “[The solution] is natural and compelling enough to study for its own sake.”
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