124 search results - page 14 / 25 » The Undecidability of the Generalized Collatz Problem |
GVD
2004
13 years 8 months ago
2004
Abstract. Checking the consistency of query conditions is an old problem, and there are already many proposed solutions. Since the problem is in general undecidable, there is not a...
ICDT
2010
ACM
13 years 6 months ago
2010
ACM
Schema mapping composition is a fundamental operation in schema management and data exchange. The mapping composition problem has been extensively studied for a number of mapping ...
SIAMCOMP
2010
13 years 5 months ago
2010
Some systems interact with their environment at physically distributed interfaces, called ports, and in testing such a system it is normal to place a tester at each port. Each test...
IJAC
2011
12 years 11 months ago
2011
We summarize the main known results involving subword reversing, a method of semigroup theory for constructing van Kampen diagrams by referring to a preferred direction. In good ca...
TASE
2009
IEEE
14 years 2 months ago
2009
IEEE
Interrupts are important aspects of real-time embedded systems to handle events in time. When there exist nested interrupts in a real-time system, and an urgent interrupt is allow...