REGULAR EXPRESSIONS IN AUTOMATA THEORY || REGULAR EXPRESSION WITH EXAMPLE || TOC

A Regular Expression can be recursively defined as follows −
ε is a Regular Expression indicates the language containing an empty string. (L (ε) = {ε})
φ is a Regular Expression denoting an empty language. (L (φ) = { })
x is a Regular Expression where L = {x}
If X is a Regular Expression denoting the language L(X) and Y is a Regular Expression denoting the language L(Y), then
X + Y is a Regular Expression corresponding to the language L(X) ∪ L(Y) where L(X+Y) = L(X) ∪ L(Y).
X . Y is a Regular Expression corresponding to the language L(X) . L(Y) where L(X.Y) = L(X) . L(Y)
R* is a Regular Expression corresponding to the language L(R*)where L(R*) = (L(R))*
If we apply any of the rules several times from 1 to 5, they are Regular Expressions.
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Instagram : / sundeepsaradhikanthety

[@pepkornphysics8960]

Automata and RE , obviously are the hardest of subjects to teach and you are doing with par excellence . thank you Sir

[@khan.Sanaaa]

Nicely u explained sir 👌 👏 ur way of teaching and ur efforts for mkng this video superb....thnk u very much sir....

[@kennadysil7806]

Nice and good👍 sir

[@SocialTalky.001]

Good explanation. Thank you Mr. Sundeep 👍🏻

[@sundeepsaradhi]

Thank you Ram for your support

[@who__are___you____26__]

And with my like 1k completed 🤭🤩
Thank you Sir for your amazing and valuable explanation 💫

[@neethukshine9996]

Sir, you are a masterpiece. Your videos are really helpful!!!

[@_MKalyaniYadav]

It's very nice explanation 🙂

[@rumindukavishka3012]

Sir ,In the last question's answer RE=a(a+b)b Should we put concatenate symbol? Like RE=a.(a+b).b Is it okay to having answer without "."

[@pavanpadamata8895]

sir, for the last example starts with a and ends with b re is (a+b)*ab this is also correct sir

[@padmapriya6258]

How? Can you pls explain

[@AbdulRazzak-ko2tb]

no

[@Ammu_2808]

Sir, yy we can use "+" Instead of we can use ".".it is also correctly na sir

[@MUSKANmuski143]

Sir, in which syllabus are you covering this topic?

[@nagachaithanya8986]

Sir in the last example why you have written R. E= a(a+b)*b? How you written that? I haven't understood that. Instead of that can't we write it as R.E = a(a.b)*b? Please explain me sir

[@sravanilokesh4025]

(a+b)* indicates that it can either take a or b but a.b indicated that it will take both and b the language for starting a and ending with b will be like {ab,aab,abb,abab,....}

[@harinimurugesan5334]

👌🏼👌🏼👌🏼👌🏼👌🏼

[@sandylagishetti]

Sir are you saying R18 syllabus?...

[@dagimgelana6543]

Please where is the next video

[@G21192]

Construct NFA for RE-01[((10)+111)*+0]* with necessary rules.
help me this please

[@nidhi8775]

❤

[@sarath596]

Today I have Maths exam. I will post the result If I pass it

[@VishalKumar-bj4nl]

Pass or not?

[@targettech.d1549]

You passed or fail bro

[@a.mustafacs1953]

Fail 😂😂

[@a.mustafacs1953]

Worry abt ur future bro

[@wizardfire555]

So not pass

[@prasanthjanapati6561]

Hi i have an exam about finite automata and kleens theorem can you help me on that?