Notes concerning “Error-correcting codes”

• Constructing error-correcting codes using Hadamard transforms 2013-05-17 (updated 2013-05-20) (22 minutes)
• Practically decodable random error correction codes with popcount 2015-07-01 (updated 2015-09-03) (6 minutes)
• Broadcast ECC with graceful degradation, or avoiding the cliff effect 2018-12-18 (5 minutes)
• Raid zim 2019-01-17 (updated 2019-02-08) (1 minute)