Two mathematicians have proved that a straightforward question—how hard is it to untie a knot?—has a complicated answer.

In “The Great Math War,” Jason Socrates Bardi takes on a battle for the soul of numbers that divided the experts of its day.

The authors used a Bayesian modeling framework to fit behavior and serotonin neuron activity to reward history across multiple timescales. A key goal was to distinguish value coding from other ...

Here is a close look at the common- versus differential-mode voltage and instrumentation amplifier (IA) topologies.

THIRD QUARTER HIGHLIGHTS Production and Fourth Quarter Expectations: The Company produced 87,020 ounces of gold in the third quarter, in line with expectations and operating plans, which fully support ...

Read our guide to finding genuine deals before making a purchase. How to find the best Black Friday deals Our expert bargain-hunters will be on hand from Black Friday through to Cyber Monday and ...