Lec-31: Pumping lemma for regular languages in TOC with examples

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  • Опубліковано 20 гру 2024

КОМЕНТАРІ • 346

  • @sameershahbaz8821
    @sameershahbaz8821 4 роки тому +750

    sir your 10-20 min lectures are worth than 1.5hr lecture that they teach in universities. appreciated sir, keep up the good work

    • @proudhindustani
      @proudhindustani 4 роки тому +8

      Indeed...
      Sir explains in the best possible way..

    • @aakarshitsrivastava6888
      @aakarshitsrivastava6888 4 роки тому +3

      Can't agree more with you

    • @ParrayAnif
      @ParrayAnif 4 роки тому +2

      😂😂😂😂😂😂😂
      Its true....

    • @SHASHANKRUSTAGII
      @SHASHANKRUSTAGII 4 роки тому +7

      Do you guys even know, it is deeply related to and based on PIGEONHOLE PRINCIPLE

    • @raghav_somani
      @raghav_somani 3 роки тому +29

      Well this is not a 10-20 min lecture it is 5-10 min cause i watch in 2x,i am preparing for universities exam and i always prepare a day before exam and i have successfully given my endsem of coa and nac through his playlist and have successfully attempted all questions,5/6 questions were on topic explqined by sir though questions were gate level

  • @harpreetsharma8368
    @harpreetsharma8368 4 роки тому +27

    length of XY must be less than or equal to N. but in both examples you are taking the length greater than N. language is infinite so its not making any difference but for cases it will create a huge difference. for example : L = { a^x b^y | 1

    • @sameeranerella1120
      @sameeranerella1120 3 роки тому +3

      I have the same doubt..anybody plz clear it...

    • @alisherkhann_
      @alisherkhann_ Рік тому +3

      @@sameeranerella1120 see jo n question me dia hai aur jo pumping length n hai wo dono alag alag hai. assume pumping length as N aur iski value khud se set kar sakte ho ex- take Nas 5 fir us hisaab se string choose karo ke string ki length 5 se badi ya barabar ho aur fir baki condition match karo
      hope this helps

  • @Sarah-qo2ut
    @Sarah-qo2ut 3 роки тому +54

    My brain was getting all flustered by reading from the notes, I was trembling how to study tomorrow itself is my exam and search on UA-cam and this video popped up!! I'm really thankful sir, I've come across almost every video of yours and subscribed it...very much helpful.. THANKS TO MY NEW GURUJI

  • @rafiachowdhury5519
    @rafiachowdhury5519 4 роки тому +114

    You are an ah-mazing teacher! I wish you a successful career with time, Sir.

  • @ahmentertainment2685
    @ahmentertainment2685 3 роки тому +15

    Excellent way of teaching , I spent more than an hour by watching a video and reading a book but can't understand pumping Lemma, but Undestand whole concept within 5 to 7 mins by watching ur video..

  • @shahbaksh2915
    @shahbaksh2915 3 роки тому +21

    Dude that was awesome. I spent so long trying to understand PL and you fixed it in 12 minutes.

  • @SEEMAVERMA-co6wp
    @SEEMAVERMA-co6wp 4 роки тому +24

    Amazing teacher you are... your great efforts clear every Student concept even who is weaker in understanding concept....bless you

  • @samanrafique8020
    @samanrafique8020 3 роки тому +1

    teaching method kamal ha ak topic 15 mint mai smjh ajata....God bless you

  • @aryanrathore1790
    @aryanrathore1790 4 роки тому +10

    At once I thought I would never be able to get this concept but with the blessings of God, I found your video and guess what now I can solve any question on pumping lemma.
    Thanks a lot:):)

  • @singingvibes8897
    @singingvibes8897 3 роки тому +6

    Concepts are improving day by day in TOC because of sir lectures.

  • @samriddhigulati3109
    @samriddhigulati3109 Рік тому +5

    best explanation out there. you explained a concept in 10 mins that others take an hour to explain. You are the reason why i will pass my engg

  • @adarsh5345
    @adarsh5345 2 роки тому +18

    Na jane sir aapko kitne logo ki best wishes aur दुआ mil rahe honge.... I think you would live 100 years or more😂.

  • @AmaimaAmir
    @AmaimaAmir 5 місяців тому +7

    hamesha end per bachne ka liya sukriya ☺☺

  • @thakkudubala4456
    @thakkudubala4456 4 роки тому +2

    Ive referred many materials for the clear explanation of how pumping lemma works.. bt i dint understand. Now its a clear explanation. Thanku so much sir. Yesterday i started this series. Today ill finish it. Ive cleared net.Ill clear jrf this time with ur support sir. Thanku so much.... 🙏

  • @aimenbaig6201
    @aimenbaig6201 3 роки тому +9

    SIR I'll support your channel from my first salary! You really deserve appreciation. Thank you so much!

  • @anshulkeote5466
    @anshulkeote5466 Рік тому +2

    Our college teacher literally took more than 1.5 hour to explain this same topic in class but still almost no student understood it.
    That teacher has been teaching for 10+ years in one of the best Engineering colleges of India and that is his level, Varun Sir literally took 10 minutes!
    Really shows the quality of our education system.

  • @sajansekhu8785
    @sajansekhu8785 3 роки тому +1

    Thnkk u so much sir..10 11 mintue main itna bda topic aapne sara smja diya..⭐⭐⭐⭐⭐

  • @usmanishaq1912
    @usmanishaq1912 2 роки тому +1

    Among all the Indians I love, Kohli is still at the 2nd place. You are great sir. Love from Pakistan.❤

  • @raashidsalam6181
    @raashidsalam6181 Рік тому +1

    according to this method,it will also disprove that a^mb^n is regular.
    Correct me if i'm wrong.

  • @gulzarhussain-mp9pm
    @gulzarhussain-mp9pm 3 роки тому +341

    Pumping leema is like semi final match: if you win then maybe or may not you win the tournament match in final, but if you loose the match in semi final then its clear that you are not going to win in the tournament 😂😂😂😂😂

    • @arshpreetsingh239
      @arshpreetsingh239 3 роки тому +30

      What a great analogy. Thanks :)

    • @Terminator0512
      @Terminator0512 3 роки тому +18

      Bhai has has k pagal ho Gaya me.... Kya dimaag lagaya hai tune🤣

    • @sohaibrumi2042
      @sohaibrumi2042 2 роки тому +4

      you made it really easy to remember!

    • @adithyang6672
      @adithyang6672 2 роки тому +7

      yeh 2 lino ne mujhe smjha diya jo mere teacher k 2 class milakar bhi nhi samjaha

    • @nj10018
      @nj10018 2 роки тому +4

      lolll , true 😂😂😂😂😂😂😂😂😂😂😂😂

  • @ramzyIC
    @ramzyIC 3 роки тому +14

    I study CS in a shitty University here in Pakistan where this course, Automata(TOC) is worse than a disease.... All thanks to Gate Smashers, we all( class of 200+) rely on you! keep it up!

  • @jayanthts5198
    @jayanthts5198 3 роки тому +15

    I literally stopped crying after watching this video. tq sir

  • @sherazahmedahmed7411
    @sherazahmedahmed7411 3 роки тому +4

    Thanks a lots Sir G !...May God bless you with a lots of happiness health wealth and prosperity ❤❤❤

  • @amritpanta2302
    @amritpanta2302 4 роки тому +8

    This is how students wants to learn subject like TOC 💪💪

  • @suvambarik8220
    @suvambarik8220 2 роки тому

    Sir aap k bharose se hi semester nikl rahe h ....aapke lectures college k mukable bohot sahi h ...keep it up sir 👍

  • @MotivationalGoals23
    @MotivationalGoals23 24 дні тому +1

    Superb Explanation sir 🥰🥰

  • @ayushfantasyside1508
    @ayushfantasyside1508 2 роки тому +1

    Aapki video sa sara doubt clear ho jata hai thanks sir 👌

  • @Muhammadwaseemkha9003
    @Muhammadwaseemkha9003 3 роки тому

    outstanding mjhy apny teacher ki samjh nahe aaa rahi thi koi concept nh clear ho rahy thy mere but you sir app ny toh kamaal kar dia thank you

  • @animationcrust1993
    @animationcrust1993 4 роки тому +1

    Aap itna sahi padhate ho ki esa lagta hi nahi koi sir hai samne...esa lagta hai koi bada bhai hi padha raha hai..☺️☺️❤️❤️

  • @midhulaanshad3203
    @midhulaanshad3203 4 роки тому +1

    sir am a malayalee and i like ur classes more.... best of luck sir ....ur explanations are wonderfull

  • @sahilmorankar6472
    @sahilmorankar6472 3 роки тому +5

    Thank you Sir for such wonderful and amazing Content!!

  • @69upasonabiswas88
    @69upasonabiswas88 3 роки тому +2

    I wish you get 500K in the within next day.. You are so close.. 499K subs.. that's just great!

  • @madhavdua8588
    @madhavdua8588 Рік тому +1

    Such videos are life saver. Thank you bhaiya 🙏

  • @takwirultayasur1944
    @takwirultayasur1944 3 роки тому

    Sir please please have mercy on me ......U are super super...I can bet in whole india no one can find better than you.u are lovely varun sir..Masha Allah May Allah subhanawata-alaa bless u n olwaz succeed u.m waitng for million subscribers here..N m very very sure about this.

  • @hafizmuzammil3438
    @hafizmuzammil3438 4 роки тому +3

    Amazing explaination , quite remarkable sir

  • @Bekeyurious
    @Bekeyurious Рік тому +46

    batao! itna sa tha aur cllg me andd shandd chal raha tha😂😂, thankyou!

    • @m1m2120
      @m1m2120 5 місяців тому

      😂😂

  • @yshshirbhate3071
    @yshshirbhate3071 2 роки тому

    Love you bro....u literally taught me this thing which was screwing my mind since long.....

  • @varunthakur9731
    @varunthakur9731 3 роки тому +1

    Thank you sr your explanation is very nice

  • @akellalakshmianagha1009
    @akellalakshmianagha1009 2 роки тому +3

    your lectures are really amazing, i have subscribed your channel sir.

  • @muhammadshafiqjamil2764
    @muhammadshafiqjamil2764 2 роки тому

    Amazing explanation, superb teacher you are, May you succeed in your teaching career ....thankuuuuuuuu

  • @honeysingh0
    @honeysingh0 Рік тому +8

    Important to note that the pumping lemma should be used to prove a language is not regular only when that language is NON-FINITE. All finite languages are regular since they can be described by finite automata. This was confusing to me at first because you can trivially see that a finite language will not satisfy the pumping lemma

  • @JiyaSid-tb9lx
    @JiyaSid-tb9lx 5 місяців тому

    I was too worried about my exams that I would fail this subject but by listening ur Lectures I am confident of passing this subject with GOOD Marks. Thank you So much GATE SMASHERS!!THANKs, Varun SIR!!!!

  • @prafuljoshi3720
    @prafuljoshi3720 Рік тому

    Thank you so much Sir for a good Contant
    God bless you Sir❤❤❤
    Always be happy & healthy 🥰🥰🥰Loving thank to you😘😘😘

  • @Mridulmishra06
    @Mridulmishra06 2 місяці тому

    very nice explaination sir n very easy to learn

  • @aftabahmadkhan9170
    @aftabahmadkhan9170 3 роки тому

    Sir Love from Pakistan. understand really well

  • @Nexteracoders
    @Nexteracoders 5 місяців тому +1

    Congratulations sir for 2 millions 🎉❤

  • @deepanshuverma362
    @deepanshuverma362 3 роки тому +1

    🙏🙏🙏 bhot aache sir ...🙏🙏🙏🙏

  • @andres_de_fonollosa
    @andres_de_fonollosa 2 роки тому +18

    2x supermercy

  • @reshma8502
    @reshma8502 Рік тому

    Pumping lemma is one of the method to check whether the language is regular or not. finite language is always regular. hence PL is used for checking if infinite language is regular or not.
    PL is negative test like hypothesis testing.
    Failing test means Not regular. (Not the other way round)

  • @rishabhjain7426
    @rishabhjain7426 3 роки тому

    Best Teacher Ever!!!!!!!!!!!!!

  • @mehreenahmed3196
    @mehreenahmed3196 4 роки тому +1

    Sir you are best teacher

  • @amanpawar1544
    @amanpawar1544 Рік тому

    love your teaching method

  • @shashankchy124
    @shashankchy124 Рік тому +3

    Your videos will save our time mainly while studying for exam purpose...GREAT. Work bhaiya....keep Going.... #SUPPORTIVE team Zinda hai ❤

  • @afraannan9091
    @afraannan9091 Рік тому

    you saved my courses bro. Always will be thankful to u

  • @OnGrindChopel-g8j
    @OnGrindChopel-g8j Місяць тому +1

    exam starting in 1 hour and im learning from here

  • @dh_saroj6457
    @dh_saroj6457 3 роки тому

    you are great brother love from nepal❤️❤️❤️

  • @antimasingh2782
    @antimasingh2782 4 роки тому +1

    Fully understandable video👌👌

  • @ravishasharma7
    @ravishasharma7 2 роки тому +1

    "Competitive exams, and even your college and university level exams ke liye bahot beneficial honge" remains constant in your lectures 😝

  • @Rabiijaz-d4b
    @Rabiijaz-d4b 5 місяців тому

    thanks for such great teaching way

  • @JTST1234
    @JTST1234 4 роки тому +2

    Short and sweet, loved it

  • @InderjeetSingh-le9uv
    @InderjeetSingh-le9uv 4 роки тому

    Thanks uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu sir apni di video mnu bhut help krdi test Or ppr vich

  • @AmitKhuranaSir
    @AmitKhuranaSir 4 роки тому +16

    We can't pick string "W" arbitrarily
    It's length must be greater than "n" ( number of states in FA)

    • @vaibhavmahalle6943
      @vaibhavmahalle6943 4 роки тому

      how do we know number of steps in FA if the given problem is no regular language

    • @AmitKhuranaSir
      @AmitKhuranaSir 4 роки тому +4

      @@vaibhavmahalle6943
      In pumping lemma first we assume language is regular so their exists FA of N states which accept that language
      And finally we arrive at contradiction
      I will soon make video on that.

    • @shaleenjain1252
      @shaleenjain1252 4 роки тому

      @@AmitKhuranaSir ye sahi kaha aapne kyunki agar arbitary n lenge to regular language bhi fail karengi. and partition kaise create hota hai and also tell me about the game which Peter linz has suggested in this topic.

    • @vaibhavmahalle203
      @vaibhavmahalle203 4 роки тому

      @@AmitKhuranaSir thank you sir looking forward for your video

  • @niteshswarnakar
    @niteshswarnakar 4 роки тому +70

    Like it if you came here from neso academy video of pumping lemma to clear doubt.....

    • @Songsz34
      @Songsz34 Рік тому +1

      Me who always comes here only 😂

    • @suparna_saha
      @suparna_saha Рік тому

      🙋🏻‍♀️

  • @anishreddy1829
    @anishreddy1829 3 роки тому +8

    sir but the third rule which is |xy|

    • @shubhamvora7237
      @shubhamvora7237 3 роки тому +1

      we have to try to divide string s in 3 parts in all possible combination. If all 3 condition don't satisfy together then we can say it is not regular language. In the first combination 1st and 3rd both are not satisfaying.

  • @anjalifarkase7591
    @anjalifarkase7591 4 місяці тому

    In college lectures I feel sleepy... but now I understand more... because of Your Lectures.

  • @gaminginfarside
    @gaminginfarside 3 роки тому

    kya sahi channel hai yaar....

  • @obaidahamd9517
    @obaidahamd9517 Рік тому

    Sir you have this concept very easy

  • @rabiaaslam3207
    @rabiaaslam3207 4 роки тому +2

    Hand off u respected sir G☺😊😊😊

  • @sudiptadhar7632
    @sudiptadhar7632 4 роки тому

    Thank you sir your explanation is best.

  • @suparna_saha
    @suparna_saha Рік тому

    Crystal clear explanation❤

  • @Terminator0512
    @Terminator0512 3 роки тому

    U made every difficult concept more easier... Thamk u so much sir.... U r the master of TOC❤️💯

  • @sripoojitha4887
    @sripoojitha4887 3 роки тому

    Love from Andrapradesh 🎉❤️

  • @rushikeshsatkar599
    @rushikeshsatkar599 4 роки тому

    EXCELLENT EXPLANATION ,THANK YOU SO MUCH SIR.

  • @hasnainy0
    @hasnainy0 4 місяці тому +1

    Bhaiya to bahut easy nikla😅

  • @SumitKumar-ru7kb
    @SumitKumar-ru7kb 4 роки тому +3

    Great explanation.

  • @toxicneuro
    @toxicneuro Рік тому

    Happy Teacher's day sir ❤

  • @Love_on_music
    @Love_on_music 3 роки тому

    Nice sir 1h class you solve in 10 min

  • @punitmaheshwari6203
    @punitmaheshwari6203 3 роки тому +1

    In a^nb^2n example, you took xy as a^n b^x which is not satisfying the third condition of the theorem.(xy < n). Please correct If i am wrong.

  • @anuj.gupta__
    @anuj.gupta__ 2 місяці тому +1

    Mujhe samajh me aagya

  • @JamateSirajiaFaisalabad
    @JamateSirajiaFaisalabad 4 роки тому

    Very Good Explanation...
    Thanks Sir

  • @ruddhisrhythm4924
    @ruddhisrhythm4924 Рік тому

    BHAI SAHAB CHA GAYE AAP TO... ODISHA SE JAY JAGANNATH

  • @AmanpreetKaur-lf4ut
    @AmanpreetKaur-lf4ut 4 роки тому

    Sir you are best teacher...

  • @mayankawasthi4802
    @mayankawasthi4802 4 роки тому +1

    Great video great lecture maja a gaya 🔥

  • @globalcitizen1238
    @globalcitizen1238 2 місяці тому +4

    University ❌ UA-cam ✅

  • @kajalteetwal8653
    @kajalteetwal8653 Рік тому

    Bs test fail krne k liye pdhna h.... kota factory m shi bola jb sure nhi to kyu pdh rhe h hum in theories ko........ BTW... sir aap bhut acha pdhate ho😊😊❤❤❤

  • @madhusharma31.83
    @madhusharma31.83 7 місяців тому

    Bohat hard bohat hard 😢😢

  • @nobodyknows4696
    @nobodyknows4696 2 роки тому +7

    example mein 3rd condition satisfy nhi hui
    according to example n = 2,
    but |xy| = 4
    please correct me if I am wrong @Gate Smashers

  • @farooqhaider9902
    @farooqhaider9902 3 роки тому

    Excellent explanation

  • @dhruvsinghal639
    @dhruvsinghal639 Рік тому

    Good bro
    You had thought best

  • @anuj.gupta__
    @anuj.gupta__ 2 місяці тому +1

    Nice

  • @yashnayak2998
    @yashnayak2998 2 роки тому

    nicely explained👌Thank you sir!

  • @sujankumardey2567
    @sujankumardey2567 Рік тому

    प्रणाम 🙏 गुरु...💫

  • @rinkisingharoy5304
    @rinkisingharoy5304 7 місяців тому

    Very helpful 🤗

  • @yash8944
    @yash8944 2 місяці тому +2

    pumping iron padhao sir

  • @sonianandy4035
    @sonianandy4035 Рік тому

    Sir you are really great😄

  • @gourikumawat6287
    @gourikumawat6287 2 роки тому

    Thanks Mann !! I am thankful to you 🙂🙂

  • @stackupsitesh_sumanyu3392
    @stackupsitesh_sumanyu3392 4 роки тому +5

    I have a doubt.
    We say that |xy|n!?
    Then we already have taken a wrong example, haven't we??

    • @kartikeyvishnoi2978
      @kartikeyvishnoi2978 3 роки тому

      But that is not xy it is xy^2.
      |xy|

    • @balaji6466
      @balaji6466 3 роки тому

      Same doubt Sir plz look into this!

    • @sameeranerella1120
      @sameeranerella1120 3 роки тому

      @@kartikeyvishnoi2978 that is Xy only not xy^2. ..xy is aabb
      Xy^2 is aabbbb...plz check

    • @sameeranerella1120
      @sameeranerella1120 3 роки тому

      @@balaji6466they dnt clear thi doubt sir. Because the same doubt is asked in many comments for this video since from last 1 year but no reply from his people...

  • @kirti_2610
    @kirti_2610 2 роки тому

    but this lecture is very good and understandable i like ur all sub video

  • @manasirath9347
    @manasirath9347 2 роки тому +1

    Excellent sir

  • @athukutti
    @athukutti 4 роки тому +5

    Sir ur lectures are awesome and easily understandable, and just for curiosity , what is ur qualification? Based upon ur class u r a legend