April 2015
Intermediate to advanced
482 pages
11h 42m
English
Content preview from Formal Languages and Automata Theory
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7
Undecidability and Computability
- Decidability and computability are the basic factors to analyse the algorithms.
In this chapter, we try to understand the importance and procedure to check whether the problem is solvable or not. As we know, computers have capabilities and limitations, and it becomes essential to have a mechanism by which we can identify an unsolvable problem, so that the problem can be altered or simplified before finding an algorithmic solution.
In the computability theory and the computational complexity theory, a decision problem is like a question in some formal system with a yes or no answer, depending on the values of some input parameters. For example, In two given numbers x & y, does x evenly divide y?’ is a decision ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.