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Webmaster InformationContact UsFor comments and corrections concerning this web site please contact webmaster@math.ohio-state.edu or leibman@math.ohio-state.edu . I discuss possible implications for some cancer therapy protocols . Over the past 6 months , Carson 's staff has been pleasantly surprised how effectively e-mail has worked for them . During the last decade of his life he made fundamental contributions to the development of computers.For the first six months of 1949 , Professor Paul V. Reichelderfer served as acting chairman of the department . During the final months of his tenure , the department moved its offices from University Hall , where it had been housed ever since its beginning in 1873 , to the new Mathematics Building at 231 West Eighteenth Avenue . During the last couple months , I was asked to analyze the test procedures for software developed to run the new coast guard cutters.This involved technically analyzing the test after it was run to correct any problems that were found . Instead of wading through four boring messages on your voicemail to get to that one crucial one your boss needed ten minutes ago , you can instantly see the messages - just like e-mail - review , save in folders or forward to other staff . The Minkowski spacetime is a four-dimensional , time-oriented affine Lorentzian space ; all these notions will be rigorously defined .