- Full text PDF available (2)
- This year (0)
- Last five years (0)
Most recording systems encode their data using binary run-length-limited (RLL) codes. Statistics such as the density of Is, the probabilities of specific code strings or run lengths, and the power spectrum are useful in analyzing the performance of RLL codes in these applications. These statistics are easy to compute for ideal run-length-limited codes,… (More)
Let X and Y be two quaternions over an arbitrary ring. Eight multiplications are necessary and sufficient for computing the product XY. If the ring is assumed to be commu-tative, at least seven multiplications are still necessary and eight are sufficient.