Art of the Problem on MSN

Public secrets, the mathematical trick that made the internet safe

Before two strangers could trust each other online, they needed a way to share a secret in plain sight. This is the elegant ...
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Ramanujan’s century-old pi trick may hide cosmic secrets

More than a century after Srinivasa Ramanujan scribbled his lightning-fast formulas for π in a notebook, physicists are finding that the same strange patterns help describe black holes and the fabric ...