Question: The alphabet is E = {a,b,c,d}. Is the below language B context-free or non-context-free? If B is context-free, give a context-free grammar that generates B.

The alphabet is E = {a,b,c,d}. Is the below language B

The alphabet is E = {a,b,c,d}. Is the below language B context-free or non-context-free? If B is context-free, give a context-free grammar that generates B. If B is non-context-free, using the pumping lemma prove that B is not context-free. B = {azi+1b2i+3 c2k+1 | i > 1, k > 1} U{b^21 dm | m > 1,r > 1} 2r ==

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Databases Questions!

ttth Suppose that the sequence of bags {Bn | n N} is recursively enumerated by the computable function e(n, x) = fn(x), [7 marks] Hence prove that the set of all recursive bags cannot be recursively...

"Fortran, Algol and Lisp invented most programming language concepts 50 years ago; adding the concept of object-orientation suffices to explain all programming languages to date". To what extent is...

Represent multisets using binary trees. Compare the representations (a), (b) and (c), stating the advantages and drawbacks of each. [Answers need not contain ML code. You may refer to algorithms and...

parameter of the Geometric Distribution have to be changed (from 2/5) for the expected annual sum to be 750? [4 marks] 6 Probability (a) Give a brief account of the Trinomial Distribution and include...

explicate the operation and gate level circuit of a multiplexer. How may it be used in conjunction with a demultiplexer to establish alternative connections across a unidirectional path between two...

Trusted software could then be run on the workstation. Discuss the advisability of this approach to workstation design. (10 marks) b) Explain how distributed inter-process communication (IPC) is...

Distributed Systems Einstein has established that there is no universal time. For earth-based computer systems discuss how events might be assiganed a time stamp which is reasonably close to...

(a) Describe how the CPU is allocated to processes if static priority scheduling is used. Be sure to consider the various possibilities available in the case of a tie. (b) "All scheduling algorithms...

1 Context-Free Languages Are the following languages context-free or not? If yes, specify a context- free grammar in BNF notation that generates the language. If not, give an informal argument. (a) {...

1. Consider the following PDA with input alphabet -ta,b,#1 b,a-> E 4i q2 23 Please answer the following questions. (a) Consider the following list of stack configurations (i) Provide an input string...

Jenkins Product, Inc., had sales of $5 million, cost of goods sold of $3 million, other operating expenses of $1 million, and interest expenses of $200,000 last year. During the year, Jenkins sold a...

Foster, Inc. purchased a truck by paying $5,000 and borrowing the remaining $25,000 required to complete the transaction. Briefly state how this transaction affects the companys basic accounting...

Mphoreng Industries is considering replacing its existing machine, which was purchased 3 years ago at a cost of R1 million. The machine is depreciated at 30% per annum and can be sold today at R900...

please dont use chat gpt AI 5 0 0 .

What tends to skew and distort Average Salaries in most Gender Pay Equity Studies?

The FedScope employment database has a number of Dimension Tables and a Single Fact Table, as shown in Table 7.1. Which columns/data elements in the Fact Table would be most useful in Pay Equity...

After Defining and Building a Multidimensional OLAP Cube, what is stored in the Cube?