I AM sorry inadvertently to have done an injustice to Drs. Caven and Lander, whose claim for priority over Dr. Letts for having constructed an atomic volume curve comprising the inert elements is ...

Mathematicians just made a big leap forward on one of the field’s all-time favorite problems. Curves—squiggly lines through space, such as a comet’s trajectory or a stock market trend—are some of math ...