Login
Register
@
Dark Mode
Profile
Edit my Profile
Messages
My favorites
Register
Activity
Q&A
Questions
Unanswered
Tags
Subjects
Users
Ask
Previous Years
Blogs
New Blog
Exams
Dark Mode
Closure Property
Na462
asked
in
Theory of Computation
Sep 9, 2018
1,876
views
1
vote
1
vote
If L1 is CSL and L2 is CFL, then which of the following is correct ?
A.L1' - L2 is CSL always
B. L1 - L2' is CSL always
C. L1 intersection Regular is Regular always
D. L1.L2 is CSL but not CFL
theory-of-computation
context-free-language
closure-property
Na462
asked
in
Theory of Computation
Sep 9, 2018
by
Na462
1.9k
views
answer
comment
Follow
share this
share
4 Comments
Show 13 previous comments
by
`JEET
commented
Nov 10, 2019
reply
Follow
share this
So, what's the correct one now?
0
0
by
Swapnil Naik
commented
Nov 10, 2019
reply
Follow
share this
here it seems both A and B are correct, C and D are incorrect.
0
0
by
`JEET
commented
Nov 10, 2019
reply
Follow
share this
Yes.
0
0
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
0
Answers
← Previous
Next →
← Previous in category
Next in category →
Related questions
1
vote
1
vote
1
answer
1
raviyogi
asked
in
Theory of Computation
Dec 30, 2017
678
views
closure property
CFL over a single alphabet are always-> A. dcfl B. regular C. dcfl but not regular d. non regular
raviyogi
asked
in
Theory of Computation
Dec 30, 2017
by
raviyogi
678
views
theory-of-computation
context-free-language
closure-property
regular-language
0
votes
0
votes
1
answer
2
sumit chakraborty
asked
in
Theory of Computation
Nov 29, 2017
551
views
TOC closure property doubt
If a language L1 is given as anbn and L2 is given as {a,b}* , then the language L1 - L2 will be : regular or CFL and why ? My doubt is that since L2 is a regular language and L1 is CFL and L2 will contain all strings in L1, so ... ). Complement of regular is regular and intersection of CFL with regular is closed and the language will be CFL. Which one is right and why ?
sumit chakraborty
asked
in
Theory of Computation
Nov 29, 2017
by
sumit chakraborty
551
views
theory-of-computation
closure-property
context-free-language
regular-language
1
vote
1
vote
1
answer
3
vaishali jhalani
asked
in
Theory of Computation
Dec 14, 2016
738
views
closure property of CFL
How to prove this.. CFL is closed under intersection with regular languages.
vaishali jhalani
asked
in
Theory of Computation
Dec 14, 2016
by
vaishali jhalani
738
views
theory-of-computation
context-free-language
closure-property
4
votes
4
votes
2
answers
4
dd
asked
in
Theory of Computation
Aug 17, 2016
1,307
views
CFL closure property
$L = \left \{ a^nb^n \ ; n\geq 0 \ , n \neq 20 \right \}$ is (a) a DCFL (b) a recursive set but not CFL (c) a CFL but not DCFL (d) not a CFL
dd
asked
in
Theory of Computation
Aug 17, 2016
by
dd
1.3k
views
theory-of-computation
closure-property
context-free-language
Subscribe to GATE CSE 2024 Test Series
Subscribe to GO Classes for GATE CSE 2024
Quick search syntax
tags
tag:apple
author
user:martin
title
title:apple
content
content:apple
exclude
-tag:apple
force match
+apple
views
views:100
score
score:10
answers
answers:2
is accepted
isaccepted:true
is closed
isclosed:true
Recent Posts
Post GATE 2024 Guidance [Counseling tips and resources]
GATE CSE 2024 Result Responses
[Project Contest] Pytorch backend support for MLCommons Cpp Inference implementation
Participating in MLCommons Inference v4.0 submission (deadline is February 23 12pm IST)
IIITH PGEE 2024 Test Series by GO Classes
Subjects
All categories
General Aptitude
(3.5k)
Engineering Mathematics
(10.4k)
Digital Logic
(3.6k)
Programming and DS
(6.2k)
Algorithms
(4.8k)
Theory of Computation
(6.9k)
Compiler Design
(2.5k)
Operating System
(5.2k)
Databases
(4.8k)
CO and Architecture
(4.0k)
Computer Networks
(4.9k)
Artificial Intelligence
(79)
Machine Learning
(48)
Data Mining and Warehousing
(25)
Non GATE
(1.4k)
Others
(2.7k)
Admissions
(684)
Exam Queries
(1.6k)
Tier 1 Placement Questions
(17)
Job Queries
(80)
Projects
(11)
Unknown Category
(870)
64.3k
questions
77.9k
answers
244k
comments
80.0k
users
Recent Blog Comments
category ?
Hi @Arjun sir, I have obtained a score of 591 in ...
download here
Can you please tell about IIT-H mtech CSE self...
Please add your admission queries here:...
Twitter
WhatsApp
Facebook
Reddit
LinkedIn
Email
Link Copied!
Copy
