Content about “
error-correcting code
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Podcast

Euromaths: Avi Wigderson

Should we allow mathematical proofs to  contain errors? We find out from  Avi Wigderson in our podcast series covering the European Congress of Mathematics 2024.

Article

Information is noisy

When you transmit information long-distance there is always a chance that some of it gets mangled and arrives at the other end corrupted. Luckily, there are clever ways of encoding information which ensure a tiny error rate, even when your communication channel is prone to errors.
Collection

Can you measure information?

Can you measure information? It's a tricky question — but people have tried and come up with very interesting ideas.
Article

Mathematical mysteries: What colour is my hat?

This is a game played between a team of 3 people (Ann, Bob and Chris, say), and a TV game show host. The team enters the room, and the host places a hat on each of their heads. Each hat is either red or blue at random (the host tosses a coin for each team-member to decide which colour of hat to give them). The players can see each others' hats, but no-one can see their own hat.
Article
barcode with take a break written above

Take a break

There are many errors that can occur when numbers are written, printed or transferred in any manner. Luckily, there are schemes in place to detect, and in some cases even correct, such errors almost immediately. Emily Dixon takes a break and discovers that codes are not just for sleuths.

Article
Mars Rover

Coding theory: the first 50 years

Space probes, like NASA's recent Pathfinder mission to Mars, have radio transmitters of only a few watts, but have to transmit pictures and scientific data across hundreds of millions of miles without the information being completely swamped by noise. Read about how coding theory helps.

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