A computer made from strands of DNA in a test tube can calculate the square root of numbers up to 900. Chunlei Guo at the University of Rochester in New York state and colleagues developed a computer ...

All numbers are imaginary (even "zero" was contentious once). Introducing the square root(s) of minus one is convenient because (i) all n-degree polynomials with real coefficients then have n roots, ...

Have you ever sat in a math classroom and wondered, “When will I ever use this?” You might have asked yourself this question when you first encountered “imaginary” numbers, and with good reason: What ...