In our today's optical illusion, a hidden number is challenging even the sharpest observers. At first glance, the image appears to be filled with the repeated word "ROCK," cleverly arranged in a ...

The bounds on Ramsey numbers, which describe relationships between nodes in a network, have been narrowed. When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...

Mathematicians sometimes think of their research as a garden and unsolved problems as seeds waiting to sprout. Some problems are analogous to tulip bulbs. As mathematicians work to solve them, they ...