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DCC
2008
IEEE
16 years 6 months ago
Huffman Coding with Non-sorted Frequencies
Abstract. A standard way of implementing Huffman's optimal code construction algorithm is by using a sorted sequence of frequencies. Several aspects of the algorithm are inves...
Shmuel Tomi Klein, Dana Shapira
DCC
2007
IEEE
16 years 6 months ago
There are no Barker arrays having more than two dimensions
Davis, Jedwab and Smith recently proved that there are no 2-dimensional Barker arrays except of size 2?2. We show that the existence of a (d+1)-dimensional Barker array implies th...
Jonathan Jedwab, Matthew G. Parker
DCC
2007
IEEE
16 years 6 months ago
Mixed partitions and related designs
We define a mixed partition of = PG(d, qr) to be a partition of the points of into subspaces of two distinct types, for instance, a partition of PG(2n - 1, q2) into (n - 1)-spac...
Gary L. Ebert, Keith E. Mellinger
DCC
2007
IEEE
16 years 6 months ago
Compressed Delta Encoding for LZSS Encoded Files
We explore the Full Compressed Delta Encoding problem in compressed texts, defined as the problem of constructing a delta file directly from the two given compressed files, withou...
Shmuel T. Klein, Dana Shapira
DCC
2006
IEEE
16 years 6 months ago
Self-Reciprocal Irreducible Pentanomials Over F2
Joseph Yucas and Gary Mullen conjectured that there is no self-reciprocal irreducible pentanomial of degree n over F2 if n is divisible by 6. In this note we prove this conjecture ...
Omran Ahmadi