A simple, elementary method is given for deriving estimates of sums of arithmetic functions, the estimates being in a certain sense uniform over a class of functions appearing in the summation. The ...

Using fundamental processes instead of brain cells, plants measure the time until dawn and divide that by their stored starch levels. Researchers say that this ability in plants represents the first ...

As a subscriber, you have 10 gift articles to give each month. Anyone can read what you share. TimesMachine is an exclusive benefit for home delivery and digital subscribers. Full text is unavailable ...