A lock that anyone can close but only one person can open sounds impossible, yet it follows directly from Euler's phi ...

Nearly 34 years after four teenage girls were brutally killed inside an Austin, Texas, yogurt shop, authorities identified the man they believe is responsible - and he has since been linked to another ...

MathCode is a terminal AI coding assistant with a built-in math formalization engine. Give it a math problem in plain language and it will automatically convert it into a Lean 4 theorem and attempt a ...

In the realm of science fiction, Dyson spheres and ringworlds have been staples for decades. But it is well known that the simplest designs are unstable against gravitational forces and would thus be ...

There’s a dot product and cross product of vectors in 3 dimensions. But there’s also a dot product and cross product in 7 dimensions obeying a lot of the same identities! There’s nothing really like ...