The comma-free codes with words of length two
نویسندگان
چکیده
منابع مشابه
Varieties of comma-free codes
New varieties of comma-free codes CFC of length 3 on the 4-letter alphabet are defined and analysed: self-complementary comma-free codes (CCFC), C3 comma-free codes (C3CFC), C3 self-complementary comma-free codes (C3CCFC), selfcomplementary maximal comma-free codes (CMCFC), C3 maximal comma-free codes (C3MCFC) and C3 self-complementary maximal comma-free codes (C3CMCFC). New properties with wor...
متن کاملCOMPLETING COMMA-FREE CODES by
We prove that for every regular comma-free code there exists a maximal comma-free code containing it which is still regular and, moreover, we can effectively locate such a completion. In particular, we can decide whether a given regular comma-free code is maximal.
متن کاملRestrictions and Generalizations on Comma-Free Codes
A significant sector of coding theory is that of comma-free coding; that is, codes which can be received without the need of a letter used for word separation. The major difficulty is in finding bounds on the maximum number of comma-free words which can inhabit a dictionary. We introduce a new class called a self-reflective comma-free dictionary and prove a series of bounds on the size of such ...
متن کاملBinary templates for comma-free DNA codes
Arita and Kobayashi proposed a method for constructing comma-free DNA codes using binary templates, and showed that the separation d of any such binary template of length n satisfies d n/2. Kobayashi, Kondo andArita later produced an infinite family of binary templates with d 11n/30. Here we demonstrate the existence of an infinite family of binary templates with d >n/2 − (18n loge n) 1/2. We a...
متن کاملCombinatorial Problems Motivated by Comma - Free Codes ∗
In the paper some combinatorial problems motivated by comma-free codes are considered. We describe these problems, give the most significant known results and methods used, present some new results and formulate open problems.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Bulletin of the Australian Mathematical Society
سال: 1976
ISSN: 0004-9727,1755-1633
DOI: 10.1017/s0004972700025065