Five years ago, mathematicians Dawei Chen and Quentin Gendron were trying to untangle a difficult area of algebraic geometry involving differentials, elements of calculus used to measure distance ...
Erin Collins oversees the Taxpayer Advocate Service (TAS) and serves as the “Voice of the Taxpayer” within the IRS and before Congress. (Photo by Samuel Corum-Pool/Getty Images) In her Annual Report ...
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