منابع مشابه
Which Sensor Set Is Better
Each Space Shuttle mission produces more than 25,000 real-time measurements in NASA's mission control center. Within the mission control center, dozens of computer programs analyze these measurements and present results to mission control personnel. Because these programs support the practice of human-in-the-loop control, they serve primarily to present information to mission controllers. The c...
متن کاملA finite goal set in the plane which is not a winner
J. Beck has shown that if two players alternately select previously unchosen points from R, Player 1 can always build a congruent copy of any given (finite) goal set G, in spite of Player 2’s efforts to stop him [B]. We give a finite goal setG (it has 5 points) which Player 1 cannot construct before Player 2 in this achievement game played in the plane.
متن کاملA K-trivial set which is not jump traceable at certain orders
We construct a K-trivial c.e. set which is not jump traceable at any order in o(log x).
متن کاملA convex polyhedron which is not equifacettable
A famous theorem due to E. Steinitz states, in one of its formulations, that every planar (or, equivalently, every spherical) graph can be realized as the graph of edges and vertices of a convex polyhedron in Euclidean 3-space (see, for example, Grünbaum [1, Section 13.1] or Ziegler [3, Chapter 4]). This representation is possible in many different ways, but in all of them the circuits that bou...
متن کاملAn ACCL which is not a CRCL
It is fairly easy to show that every regular set is an almost-confluent congruential language (ACCL), and it is known [3] that every regular set is a Church-Rosser congruential language (CRCL). Whether there exists an ACCL, which is not a CRCL, seems to remain an open question. In this note we present one such ACCL.
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: Michigan Mathematical Journal
سال: 1964
ISSN: 0026-2285
DOI: 10.1307/mmj/1028999130