Complex, Hermitian, and Unitary Matrices

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  • Опубликовано: 16 янв 2025

Комментарии • 100

  • @ProfessorDaveExplains
    @ProfessorDaveExplains  5 лет назад +129

    Whoops! In the checking comprehension for question 1, the top right entry on that matrix should be 2 + i, not 2 + 1. Sorry!

    • @chemisthenry3001
      @chemisthenry3001 4 года назад +7

      sure, thanks for the Video.
      May you put more Math videos related to quantum physics.!

    • @lamalamassu5337
      @lamalamassu5337 3 года назад +3

      Thank you...but I recognize that from the solution.

    • @mariyahaxix2360
      @mariyahaxix2360 3 года назад +2

      It is not square matrix

    • @vellabro
      @vellabro Год назад

      Amazing Playlist ❤

    • @b_f_d_d
      @b_f_d_d 11 месяцев назад +1

      ​@@vellabroyup

  • @charmy3021
    @charmy3021 5 лет назад +81

    He knows a lot about all kinds of stuff! Professor Dave Explains~~~

  • @allisonphysics6416
    @allisonphysics6416 4 года назад +30

    Thanks for saving me once again Prof. Dave! If you ever add to this series can you cover the following: Symmetric bilinear forms, sesquilinear forms, adjoint/ self-adjoint linear maps, the spectral theorem, Jordan Canonical Form, and positive self-adjoint linear maps.

  • @sanjana3251
    @sanjana3251 5 лет назад +11

    In the comprehension question no.1 in the 1st row 2nd column it was written 2+1 but in the answer you have written it in the form of conjugate transpose 2-i

  • @keshosingh5645
    @keshosingh5645 5 лет назад +5

    explained in very simple and lucid style. thank for the video

  • @mr.pillow1054
    @mr.pillow1054 28 дней назад

    Thank you for making this! I did this in undergrad years ago, but never really understood it. After watching your videos, I feel confident in my understanding now and can apply it to my graduate studies!

  • @emlmm88
    @emlmm88 5 лет назад +11

    Really liking these math videos. You should do a series on modern algebra as well.

  • @Alexandra-he8ol
    @Alexandra-he8ol 4 года назад +2

    I needed linear algebra for better understanding the data science algorithms. Thanks for the well-structured and clear course!

  • @sapaephyu6532
    @sapaephyu6532 4 года назад +3

    Thx for saving my life, prof.

  • @alfandosavant4639
    @alfandosavant4639 10 месяцев назад

    2nd week of engineering major and I need to recall this. Thank you so much!

  • @huythai6210
    @huythai6210 2 года назад +1

    thank you so much it's very clear to understand

  • @mohammadamanalimyzada1462
    @mohammadamanalimyzada1462 3 года назад +3

    Thank you so much for the amazing series
    I have learned many things from it

  • @harishbalaji658
    @harishbalaji658 4 года назад +2

    Professor Dave it was really pakka, crystal clear

  • @mddinar
    @mddinar 4 года назад +1

    This lecture is bloody good.. Thank Prof.

  • @scottrose9260
    @scottrose9260 5 лет назад +3

    Thank you for this, a layman curious about the world, been looking at treatments of this for years, but founds some pearls of wisdom in this video that I didn't know or realize. I suppose they should have occurred to me by now, but your explanations were simple and intuitive and I feel like I gained meaningful insights. Thanks again, looking forward to more of this.

  • @dayanulalam1678
    @dayanulalam1678 Год назад +3

    4:56 the linear algebra Jesus confirmed

  • @michaelzumpano7318
    @michaelzumpano7318 2 года назад

    That was the best explanation I've heard. Thanks. I really appreciated your video where you discussed who you are.

  • @theanalyser8456
    @theanalyser8456 11 месяцев назад

    This is one of the channels that you just see one video and you instantly subscribe 😊

  • @harshvisaini2843
    @harshvisaini2843 10 месяцев назад

    Amazing lecturer. THanks Professor !!

  • @arinalikes5911
    @arinalikes5911 4 месяца назад

    U gotta way to make things lucid, thank you sm ❤

  • @Im_Your_Proof7
    @Im_Your_Proof7 2 года назад

    Thanks a lot Professor Dave💞💞💞💞💞

  • @josephckennedy
    @josephckennedy Год назад

    This was really well explained! Thanks! I (along with countless others) appreciate this!

    • @toxicrow9473
      @toxicrow9473 Год назад

      Could you solve the problems?
      I am getting
      1/3 0
      0 1/3
      As the result of unitary Matrix
      It's not identity Matrix tho

    • @josephckennedy
      @josephckennedy Год назад +1

      @@toxicrow9473
      I’ll give it a try!

  • @paraskevidimoraga5960
    @paraskevidimoraga5960 5 лет назад +2

    Excellent, thank you!!

  • @jinyoungpung2178
    @jinyoungpung2178 4 года назад

    Crystal clear. Love it!

  • @rohimakhatun6581
    @rohimakhatun6581 2 года назад

    Thank you sir ...... it's more helpful for me .... thanks a lot

  • @areejmohammad7567
    @areejmohammad7567 5 лет назад

    This video is amazing! 👍🏻

  • @trhll5635
    @trhll5635 25 дней назад

    Greetings Professor Dave, I’ve been watching your mathematics playlist, and I’m grateful for the knowledge you provide in it
    I have a question and it’s about the private video in the linear algebra playlist, is that private video an indication that there’ll be a new video coming out at some point in the linear algebra playlist?

    • @ProfessorDaveExplains
      @ProfessorDaveExplains  25 дней назад

      Yep just one topic I missed coming out next week

    • @trhll5635
      @trhll5635 25 дней назад

      @@ProfessorDaveExplains Awesome, thank you for letting me know! 👍

  • @slainiae
    @slainiae 5 лет назад

    Fantastically explained.

  • @fadia217
    @fadia217 Год назад

    Thats great thank you so much ❤ from Jordan 🇯🇴

  • @newaz1268
    @newaz1268 3 года назад

    Thanks, man! Your video is great.

  • @manjusulekha4042
    @manjusulekha4042 5 лет назад +1

    Second...🙋very usefull video...thank you sir...

  • @ZaChousenWan
    @ZaChousenWan 3 года назад +4

    "Change the sign of each imaginary number on the matrix and turn the rows into columns." vs " Show the Transpose of the Complex Conjugate of the given Matrix."
    Good teachers vs sadistic teachers.

  • @can_dospreadgospel5770
    @can_dospreadgospel5770 3 года назад

    Thanks very very much Professor. You have really thought me a lot. I’m much grateful. God bless you as well 🙏

  • @송영찬-z6t
    @송영찬-z6t 3 года назад +1

    한글자막 누가 달았는지는 모르겠지만 감사합니다
    Thank you very much for the Korean subtitles!!

  • @InasJaber-e6v
    @InasJaber-e6v Год назад

    شكرا ً جزيلاً
    Thanks a lot

  • @uditsaxena3844
    @uditsaxena3844 4 года назад

    Thanks sir very clear

  • @sofiyaprincy
    @sofiyaprincy 8 месяцев назад

    Professor Dave, I have a topic in my linear algebra and matrix paper called 'Nature of characteristic roots in case of special matrix' . Could you please post on that topic?

  • @lamees1134
    @lamees1134 4 года назад

    You are amazing. PLZZZZZZZ keep up the good work up.

  • @ambitionstudypointsurajsah921
    @ambitionstudypointsurajsah921 4 года назад

    Excellent 👌🏻

  • @nthumara6288
    @nthumara6288 7 месяцев назад

    thank youuu sir

  • @bernab
    @bernab 5 лет назад

    Yes. it is 2+ i. But anyway. Great video. Thank you Professor Dave. Will there be more videos of Linear Algebra??

  • @ys1940
    @ys1940 5 лет назад +1

    Could you make a video about cramer's rule

  • @erasmusnegongo9483
    @erasmusnegongo9483 2 месяца назад

    Thanks bro

  • @anson8570
    @anson8570 3 года назад

    Hi. I don't know more things about matrix multiplication. But I have a doubt . Why we are taking conjugate transpose instead of transpose for complex matrix multiplication ? What will happen if we don't take conjugate .

  • @tpeianlee
    @tpeianlee 4 года назад

    This guy does better than my prof

  • @amk1108
    @amk1108 5 лет назад

    8:15 type on the original matrix. should be 2+i in upper right corner

    • @ProfessorDaveExplains
      @ProfessorDaveExplains  5 лет назад +2

      whoopsie! thanks for catching that, i'll pin a comment.

    • @amk1108
      @amk1108 5 лет назад

      thank you for your videos dave! Keep it Up!!

  • @moreblessingmushohwe6506
    @moreblessingmushohwe6506 2 года назад

    Thank you Professor Dave!!!!
    Ps: Found out you came to Cornell a week ago and I didn't get to see you 😥💔💔

  • @momomuscu1261
    @momomuscu1261 3 года назад

    Hello , what is the identity matrix in C ?

  • @tabindawani6869
    @tabindawani6869 4 года назад +1

    Thanks a lot for your efforts.
    This video helped me a lot.
    Lots of love,hope and trust from Indian occupied Kashmir.😍

  • @Tomas-zv2js
    @Tomas-zv2js Год назад

    Hey how is the conjugate of that original matrix in the first example not -7 but remains as seven but all the other terms have their signs flipped?

  • @danielerimantaadapilah1152
    @danielerimantaadapilah1152 4 года назад

    The first entry in column two is 2+i but not 2+1

  • @damien20ntakirutimana96
    @damien20ntakirutimana96 2 года назад

    What does orthonormal basis mean?

  • @dicksonkachamac787
    @dicksonkachamac787 4 года назад

    nice one

  • @yashaggarwal2822
    @yashaggarwal2822 2 года назад +1

    Doubt :: i need to find adjoint of Matrix , matrix comprises of Complex elements so
    What i have to do ? I mean I just have to transpose the matrix or to take its conjugate transpose?

  • @samiransari6707
    @samiransari6707 5 лет назад

    What is the value of (i) in unitary

  • @chasethescientistsaturre5009
    @chasethescientistsaturre5009 3 года назад

    Time to go to advance mathematics woohoooooooooooooooo

  • @lukasnegumbo1879
    @lukasnegumbo1879 3 года назад

    Let’s assume it’s right the way it was given and agree to it being a Hermitian Matrix🙂

  • @erasmusnegongo9483
    @erasmusnegongo9483 2 месяца назад

    Namibia approves 👌

  • @CSBPRAKASHDEEPAK
    @CSBPRAKASHDEEPAK Год назад

    Can anyone check q3 in exercise?

    • @barfy.man3624
      @barfy.man3624 Год назад

      Inverse short cut doesn't work for complex matrix

  • @lalegulbuz3496
    @lalegulbuz3496 4 года назад

    allah anlatsa ancak bu kadar güzel anlatırdı.

  • @Recordingization
    @Recordingization 4 года назад

    Awasome

  • @Yuras20
    @Yuras20 5 лет назад

    If i = sqrt(-1) then -1 = i * i = sqrt(-1) * sqrt(-1) = sqrt( (-1) * (-1) ) = sqrt(1) = 1. That's why I would rather assume i ^ 2 = -1, rather than i = sqrt(-1) because it doesn't lead to such contradictions.

    • @ProfessorDaveExplains
      @ProfessorDaveExplains  5 лет назад

      It's not a contradiction. You just said that i^2 = -1, and -i^2 = 1. That's how negative numbers work.

  • @omarabduljaleelaltuwaijari4754
    @omarabduljaleelaltuwaijari4754 3 года назад

    thank you...university of Baghdad

  • @Wiyt
    @Wiyt 5 лет назад

    What's up with your video view to subscriber ratio?

    • @ProfessorDaveExplains
      @ProfessorDaveExplains  5 лет назад +3

      The only people that are dying to watch a linear algebra tutorial are people who are currently studying linear algebra.

    • @Wiyt
      @Wiyt 5 лет назад

      Professor Dave Explains I get that... I just don't understand how other people won't watch. It's such a tiny percentage compared to the people that receive your videos in their subscription box.

    • @ProfessorDaveExplains
      @ProfessorDaveExplains  5 лет назад +4

      Why would they watch if they aren't studying linear algebra? My content is not at all entertaining.

    • @Wiyt
      @Wiyt 5 лет назад +1

      @@ProfessorDaveExplains I'm not sure. Why would a channel with almost half a million subs only have 132 patrons on their Patreon?
      I know of people with 100k subs that have over 1000+ patreons. Your channel subscribers compared to the amount of people that watch just doesn't add up. I'd assume people would still click on the videos, unless it's just all botted subs.
      But what do I know?

    • @promorizzics
      @promorizzics 5 лет назад +2

      @Abhay Kamath bad idea

  • @amogh5427
    @amogh5427 5 лет назад +1

    Easy

  • @interresistance7614
    @interresistance7614 4 месяца назад

    2nd one is Not Hermitian
    3rd one will be Not Unitary!!

  • @Amanda-if4qp
    @Amanda-if4qp 5 лет назад +1

    i th

  • @bullee
    @bullee 4 года назад

    Wikipedia: In mathematics, a Hermitian matrix is a complex square matrix that is equal to its own conjugate transpose.
    Is this really what you're saying around 5 minutes?

    • @bullee
      @bullee 4 года назад

      Ah "hermitian transpose" not the same as "hermitian matrix"