2 papers
math.CO2026
External Difference Families Arising from Two or Three Cyclotomic Classes
Miwako Mishima, Yu Tsunoda
We study external difference families arising from cyclotomic classes in finite fields from the viewpoint of a fixed number of blocks. For families consisting of even-indexed cyclo…
cs.IT2026
Cyclotomy, External Difference Families, and Algebraic Manipulation Detection Codes
Minfeng Shao, Miwako Mishima
External difference families (EDFs) are closely related to algebraic manipulation detection (AMD) codes, a cryptographic primitive that protects messages against additive tampering…