Hyperfactorial introduction

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  • เผยแพร่เมื่อ 29 ธ.ค. 2024

ความคิดเห็น • 255

  • @blackpenredpen
    @blackpenredpen  6 ปีที่แล้ว +104

    0^0=1 by convention in hyperfactorial as well. : )
    Just like in power series, see this video th-cam.com/video/rJil85GHEyc/w-d-xo.html

    • @seroujghazarian6343
      @seroujghazarian6343 6 ปีที่แล้ว +2

      I thought 0^0 was undefined

    • @angelmendez-rivera351
      @angelmendez-rivera351 6 ปีที่แล้ว +5

      Serouj Ghazarian 0^0 is an indeterminate form, which is why limits with this form can equal many different values and exist. This is different from the expression not being defined. If a limit ever is evaluated to equal an undefined arithmetic or algebraic expression, then the limit does not exist. There is a much more rigorous way to state this, but I’m not going to bother with on a short TH-cam comment. Needless to say, there is much evidence that suggests that 0^0 is a necessary convention in mathematics, and in most fields of study, 0^0 = 1 is assumed even if it is unprovable.

    • @seroujghazarian6343
      @seroujghazarian6343 6 ปีที่แล้ว +2

      @@angelmendez-rivera351 exactly! LIMITS! you know why 0^0 is inderterminate? Because it takes you straight to 0×infinity (lim x->0+ e^(xlnx)) and I'm pretty sure that ln(0) is undefined. Although, if we think like that, 0 itself is undefined

    • @seroujghazarian6343
      @seroujghazarian6343 6 ปีที่แล้ว

      @@angelmendez-rivera351 also, while you're at it, why don't you take sin(0)/0=1, (cos(0)-1)/0=0, log(b=1)(1)=1 (actually, the last one can be any real number)

    • @lucazara9137
      @lucazara9137 6 ปีที่แล้ว

      I found this formula for negative hyperfactorial
      H(-n) = (-1)^(n+1)*(n-1)^(n-1)*H(-n+1)

  • @kingbeauregard
    @kingbeauregard 6 ปีที่แล้ว +84

    Cool jacket! Did you start a motorcycle gang for mathematicians? You could call yourselves The Unbounded Functions.

    • @blackpenredpen
      @blackpenredpen  6 ปีที่แล้ว +12

      lol, that will be cool!

    • @emethirsch7107
      @emethirsch7107 6 ปีที่แล้ว +14

      Speed Without Limit!

    • @Uni-Coder
      @Uni-Coder 6 ปีที่แล้ว +3

      Painted with black pen

  • @blazedinfernape886
    @blazedinfernape886 6 ปีที่แล้ว +50

    5!= number of seconds in 2 minutes.
    H(5)=number of milliseconds in a day.
    Wow that escalated quickly.

    • @Gold161803
      @Gold161803 6 ปีที่แล้ว +6

      I think 10! is the number of seconds in six weeks

    • @blazedinfernape886
      @blazedinfernape886 6 ปีที่แล้ว +5

      @@Gold161803 yup! Numberphile did a video on it.

    • @stewartzayat7526
      @stewartzayat7526 4 ปีที่แล้ว +2

      And what is H(10)?

    • @jorandax9059
      @jorandax9059 4 ปีที่แล้ว +3

      @@stewartzayat7526 Number of Planck times in 11.63 seconds.

  • @williamallen9145
    @williamallen9145 6 ปีที่แล้ว +56

    Once upon a time there was a factorial, he drinks a lot of coffee and eats a lot of sugar, he is... HYPER. Haha

  • @SeriousApache
    @SeriousApache 6 ปีที่แล้ว +73

    I think with enough brute force it is possible to do H(-1)

    • @angelmendez-rivera351
      @angelmendez-rivera351 6 ปีที่แล้ว +4

      RUSapache Read my comment above, where I derived a symmetry formula for all integers n, extending H for negative inputs, and I also demonstrated that every half-integers is a root of H(x) given this definition of H.

    • @Kitulous
      @Kitulous 6 ปีที่แล้ว +2

      well, if we go from n to 1 so it looks like this:
      1
      П k^k
      k=n
      Then it would work, actually.
      H(-1) in this case is (-1)^(-1)*0^0*1^1
      We got a 0^0 problem here. But if to fix it knowing that lim x->0 (x^x) =1, then it's (-1)^(-1)*1*1 = -1*1*1 = -1. Seems legit? I think it does.

    • @angelmendez-rivera351
      @angelmendez-rivera351 6 ปีที่แล้ว +1

      Craftist Except you are not allowed to do that, and that is not the definition of the hyper-factorial. In particular, if you have a product over an ordered sequence, then the indexing is not allowed to happen over a variable boundary if there is no function over the boundary and if the upper boundary is a fixed constant which is lower. By your argument, H(n) = 0 everywhere except for H(1) = 1, which is absurd. No, we simply define H via the recursion formula, and if the value H(x) exists for some x, then it must satisfy the recursion. Then we say that H(0) = 1 by the recursion, and if we use a limit or adopt the convention 0^0 = 1 - and Let me tell you that there is far more reason to adopt than to not adopt it - then we can prove easily that H(-1) by the recursion. However, H(n) for n < 0 could not be calculated using products as you tried it because products are undefined for negative integers. Product and summation notation are a pain in the ass and they only add obstacles unnecessarily to the problem, even if they are more intuitive.

    • @MrRyanroberson1
      @MrRyanroberson1 6 ปีที่แล้ว +1

      Easy. H(1)=1=H(0)×1, so H(0)=0^0= conventionally 1. Then H(0)=0^0 × H(-1)=H(-1), and from there H(-n)=H(n)×H(-1)×-1^(f), and the H(-1) goes away, being equal to 1. f must be worked out to agree with the parity of H(-n), I'm sure there's a closed form. The reason H(n) appears is because on the left side it gets multiplied by values ^ negatives, and so you can see that (-2)^(-2)=1/2^2, with the only difference being a factor of -1 for odd bases, and 1/2^2 on the left becomes 2^2 on the right

  • @IQuick143cz
    @IQuick143cz 6 ปีที่แล้ว +15

    Is there any real continuation of the hyperfactorial? Similar to how we have the Gamma function for the regular factorial.

  • @alex_ramjiawan
    @alex_ramjiawan ปีที่แล้ว +1

    If we reverse the input to n and n+1, etc, and input negative numbers, it equals (H(n))^-1.

  • @gouravmadhwal5548
    @gouravmadhwal5548 6 ปีที่แล้ว +83

    Plz integrate
    ln(ln(ln(lnx)))

    • @angelmendez-rivera351
      @angelmendez-rivera351 6 ปีที่แล้ว +1

      Gourav Madhwal Cannot be done in terms of elementary functions, but...

    • @DiegoMathemagician
      @DiegoMathemagician 6 ปีที่แล้ว +20

      extreme integration math 1052 xD

    • @MichaelProds99
      @MichaelProds99 6 ปีที่แล้ว +17

      @@DiegoMathemagician just put the horseshoe dude

    • @ZelForShort
      @ZelForShort 6 ปีที่แล้ว +4

      Isn't that horseshoe math?

    • @gouravmadhwal5548
      @gouravmadhwal5548 6 ปีที่แล้ว +1

      @@ZelForShort yes it is

  • @AndDiracisHisProphet
    @AndDiracisHisProphet 6 ปีที่แล้ว +56

    so the hyperfactorial of 0 represents the number of milliseconds in one millisecond.
    also, better notation would be "n?"

  • @xusui_2830
    @xusui_2830 6 ปีที่แล้ว +3

    Ever since I started watching you, you've reignited my passion for mathematics. Thank you :)

  • @cfgauss71
    @cfgauss71 6 ปีที่แล้ว +35

    Hyperfactorial is cool...BUT...it is not as cool as your jacket, isn't it?

  • @2kreskimatmy
    @2kreskimatmy 6 ปีที่แล้ว +20

    0^0=1 :thinking:

  • @yaboylemon9578
    @yaboylemon9578 6 ปีที่แล้ว +5

    Really digging the new fish/shark themed thumbnails.

  • @NonTwinBrothers
    @NonTwinBrothers 6 ปีที่แล้ว +39

    these thumbnails mannnn

    • @blackpenredpen
      @blackpenredpen  6 ปีที่แล้ว +3

      : ))))))

    • @yrcmurthy8323
      @yrcmurthy8323 6 ปีที่แล้ว +1

      Superb right ?

    • @blackpenredpen
      @blackpenredpen  6 ปีที่แล้ว

      @@yrcmurthy8323 thanks!

    • @yrcmurthy8323
      @yrcmurthy8323 6 ปีที่แล้ว +1

      *@blackpenredpen No need to say thanks sir,. You deserve an 👏 applause*

  • @krisbarc4927
    @krisbarc4927 6 ปีที่แล้ว +22

    Nice video. What about "tetrafactorial" : T(n) = n^(n-1)^(n-2)^...^1 ?

    • @Someniatko
      @Someniatko 6 ปีที่แล้ว +4

      ^...^

    • @NoahmassMulti
      @NoahmassMulti 2 ปีที่แล้ว

      That would be 2^10^44 if T(5) was the input

    • @NoahmassMulti
      @NoahmassMulti 2 ปีที่แล้ว

      Which is around 10^10^43.6

  • @vincentwilliamrodriguez3572
    @vincentwilliamrodriguez3572 6 ปีที่แล้ว +24

    hyperfactoreos

    • @Dreamprism
      @Dreamprism 6 ปีที่แล้ว +2

      Vincent William Rodriguez sounds tasty

  • @hyperupcall
    @hyperupcall 6 ปีที่แล้ว +8

    That's a slick jacket! Love it!

  • @General12th
    @General12th 6 ปีที่แล้ว +5

    I just started the video. I can't wait to learn about hyperfactoreos!

    • @General12th
      @General12th 6 ปีที่แล้ว +1

      H(0) = 0^0 * H(-1)
      1 = 0^0 * H(-1)
      0^0 is undefined, so H(-1) is undefined.
      The question, then, is what about noninteger values of n? What about complex values of n?

  • @Zafarrrrrrrrr
    @Zafarrrrrrrrr 6 ปีที่แล้ว +22

    hyperfactoreos :D

  • @ffggddss
    @ffggddss 6 ปีที่แล้ว +4

    When computing H(5), you can group the factors as follows:
    H(5) = 5⁵·4⁴·3³·2²·1¹ [2² = 4, so put it in with the 4's]
    = 5⁵·4⁵·3³ = 20⁵·27 = 3,200,000·27 = 86,400,000
    Fred

  • @nikodempatrycjuszswiercz4064
    @nikodempatrycjuszswiercz4064 6 ปีที่แล้ว +23

    There's another formula for it I've found (using math not google):
    H(n) = n!/0! * n!/1! * n!/2! * ... * n!/(n-2)! * n!/(n-1)!

    • @mr_1wr572
      @mr_1wr572 6 ปีที่แล้ว

      Cool!

    • @nikodempatrycjuszswiercz4064
      @nikodempatrycjuszswiercz4064 6 ปีที่แล้ว +3

      This one actually uses regular factorials showing the „hyperness” of the hyperfactorial

    • @Cloud88Skywalker
      @Cloud88Skywalker 6 ปีที่แล้ว

      @@nikodempatrycjuszswiercz4064 This is exactly what I thought he was going to do when he says he's going to rearrange. I did, and you can compact the formula to: *H(n) = (n!)^n / sf(n-1).*
      sf(n) is the superfactorial, I just looked it up, and it's sf(n) = n! · (n-1)! · (n-2)! · ... · 2! · 1!

  • @plasmacrab_7473
    @plasmacrab_7473 6 ปีที่แล้ว +1

    You should put the exclamation mark in the exponent so you’d have n^! Now THAT is what I call hyper.

  • @alextaunton3099
    @alextaunton3099 2 ปีที่แล้ว +2

    Is there an integral-based formula for a hyperfactorial like there is for a normal factorial (i.e. the pi function for a normal factorial)?

  • @nietschecrossout550
    @nietschecrossout550 6 ปีที่แล้ว +6

    Is there an Ultrafactorial? like using tetration: U(5)=high5^low5 * 4^4 * 3^3 * ...

    • @caloz.3656
      @caloz.3656 6 ปีที่แล้ว +3

      tetration**

    • @nietschecrossout550
      @nietschecrossout550 6 ปีที่แล้ว +1

      @@caloz.3656 thx, didn't notice it

    • @caloz.3656
      @caloz.3656 6 ปีที่แล้ว +1

      @@nietschecrossout550 you're welcome!

    • @caloz.3656
      @caloz.3656 6 ปีที่แล้ว

      Aden Tate he said tetation.

  • @mayankvats926
    @mayankvats926 6 ปีที่แล้ว +2

    Next is hypersupremeover9000megatron factorial 😂. Love your videos btw!!!

  • @Spartan11199
    @Spartan11199 6 ปีที่แล้ว

    Really enjoy these videos man!

  • @legendgames128
    @legendgames128 3 ปีที่แล้ว

    "He eats a lot of coffee and drinks a lot of sugar." Had me laughing for a while.

  • @shivammalluri6403
    @shivammalluri6403 6 ปีที่แล้ว +4

    Why don't you try the integral of the tetration of sin(x)

  • @JBaker452
    @JBaker452 6 ปีที่แล้ว +2

    Think a bit about the Q function; if it does not blow your mind then think harder ;-)
    I have more to say about it later

  • @aditidas9978
    @aditidas9978 6 ปีที่แล้ว +1

    New topic 😊 😊for me.but after i watched this video I did some of the problems on this topic and they seems to be too interesting .thanks,I easily catched the concept right here😊😊😊😊😊😊😊

  • @norielsylvire4097
    @norielsylvire4097 6 ปีที่แล้ว +1

    Hyperfactorial of a negative number is equal to zero, as the exponent gets closer to minus infinity, it gets divided by a larger number, which means each index gets smaller and smaller, and tends to zero. And if you multiply a number by zero you get zero.

    • @norielsylvire4097
      @norielsylvire4097 6 ปีที่แล้ว

      Sorry, I didn't explain the infinity thing. Take H(-3) for example. H(-3)=-3^-3*(-3-1)^(-3-1)*(-3-2)^(-3-2)•••=-3^-3*-4^-4*-5^-5••• the exponent doesnt get closer to zero but closer to minus infinity, as it gets subtracted one each time. A negative exponent is the same as 1/the number to that exponent.
      If the exponent is minus infinity it is the same as 1/infinity which tends to zero. If you multiply by zero, you get zero.

  • @ahmedshaikha8938
    @ahmedshaikha8938 6 ปีที่แล้ว +1

    Introducing the K-function/Barne’s G-function

  • @shivimish9962
    @shivimish9962 6 ปีที่แล้ว +6

    I was literally thinking about it yesterday, and you make a video today, wow

    • @karthikrambhatla7465
      @karthikrambhatla7465 6 ปีที่แล้ว

      Where did it came across

    • @shivimish9962
      @shivimish9962 6 ปีที่แล้ว +2

      @@karthikrambhatla7465 Just popped up when doing maths

    • @blackpenredpen
      @blackpenredpen  6 ปีที่แล้ว +2

      Wow! What class?

    • @shivimish9962
      @shivimish9962 6 ปีที่แล้ว +3

      @@blackpenredpen 12th but it was not in the book😂😀

  • @manuelepedicillo864
    @manuelepedicillo864 6 ปีที่แล้ว +2

    1:54 what happened?

  • @karthikrambhatla7465
    @karthikrambhatla7465 6 ปีที่แล้ว +3

    Crazy.. heard this for the first time. Thank you❤️. But BlackpenRedPen where this hyperfactorial is used

  • @lilyyy411
    @lilyyy411 6 ปีที่แล้ว

    "Eats a lot of coffee and DRINKS a lot of sugar" That's how hyper it is

  • @legendgames128
    @legendgames128 3 ปีที่แล้ว

    Hyper factorial has a lot in common with hyper dashing, there is tremendous horizontal ground covered.

  • @DanDart
    @DanDart 6 ปีที่แล้ว +2

    Loving that jacket!

  • @dwaraganathanrengasamy6169
    @dwaraganathanrengasamy6169 6 ปีที่แล้ว +2

    lim n -> -1 H(n)=1 where we approach from right. Is it right...?

  • @ZipplyZane
    @ZipplyZane 6 ปีที่แล้ว

    The natural extension would be for 0^0 = 1, same as 0! = 1. That way you just multiply all the results by one. Therefore, H(0) = 1.

  • @shubham1999
    @shubham1999 6 ปีที่แล้ว

    Can you tell what is method of Multipliers in linear PDE?

  • @rafciopranks3570
    @rafciopranks3570 6 ปีที่แล้ว

    Check out Foias Ewing constant.

  • @Hailfire08
    @Hailfire08 6 ปีที่แล้ว +3

    YES DO INFINITE NEGATIVE CONVERGING SUMS - NEGATIVE HYPERFACTORIALS!

  • @maxwibert
    @maxwibert 6 ปีที่แล้ว +1

    Is there such a thing as a hyper-gamma function? By that I mean an analytic extension of the hyperfactorial to some well behaved subset of R or C?

  • @perveilov
    @perveilov 6 ปีที่แล้ว +6

    Learn how a factorial can be such a hypebeast

  • @nikolamarijanovic6261
    @nikolamarijanovic6261 6 ปีที่แล้ว +2

    I'm guessing the negatives would work but it depends if they are even or odd.

  • @ralfs7762
    @ralfs7762 6 ปีที่แล้ว +1

    Make more videos about factorials!!

  •  6 ปีที่แล้ว

    Can you make a video with hyperfactorial arrow notation please

  • @angelmendez-rivera351
    @angelmendez-rivera351 6 ปีที่แล้ว +1

    Anyway great video! Now do superfactorials!

  • @narmadav4006
    @narmadav4006 6 ปีที่แล้ว

    Pl. Integrate
    If a>1 then
    dx /( x^(2) + 2ax + 1 ) is equal to

  • @cellina.starfire
    @cellina.starfire 5 ปีที่แล้ว

    Isn’t this just every factorial from n! to 1! multiplied together? Pretty cool!

  • @paulthompson9668
    @paulthompson9668 6 ปีที่แล้ว

    Analytic continuation of hyperfactorial?

  • @Gamma_Digamma
    @Gamma_Digamma 6 ปีที่แล้ว

    Woah, I'm drooling

  • @Larry640
    @Larry640 2 ปีที่แล้ว

    I'm curious as to what the use of this might be, as basically any value n greater than 10 is already incomprehensibly large. As in near universe-breaking

  • @swenji9113
    @swenji9113 3 ปีที่แล้ว

    Well if you believe in your formula you don't have to write H(n) in terms of H(n-1) to get H(0). By convention, an empty product (product of zero terms) is equal to the neutral element for the multiplication law, so it is 1. In the same way, an empty sum is by convention equal to 0, which is the neutral element for addition.
    These conventions ensure that any reccurence formula you will get for your sum or product remains true at 0

  • @tientranquang0807
    @tientranquang0807 3 ปีที่แล้ว

    Wait, isn't H(n)=[(n!)^n]/[(n-k)!] ? (k

  • @Rundas69420
    @Rundas69420 6 ปีที่แล้ว

    Even here mah boi the gamma function is present. Because H(z) can be defined as follows:
    H(z)=K(z+1) where K is the, oh wonder, K-Function. And K(z) is defined as K(z)=(2pi)^((1-z)/2)*exp[(z choose 2) + integral from 0 to (z-1) of ln(Γ(t+1))dt].
    Boi
    Edit: So you just need to plug in z=z+1 to get a definition for H(z) in terms of the Gamma-Function. I'm using z here because you can plug everything, even complex numbers, into
    the Gamma-Function.

  • @harshsrivastava9570
    @harshsrivastava9570 6 ปีที่แล้ว +3

    It is said that bprp is still hearting people and will continue to do so forever...

  • @azamingxzc9570
    @azamingxzc9570 6 ปีที่แล้ว +4

    If factorial is for arrangement then what is superfactorial and hyperfactorial for??

    • @karthikrambhatla7465
      @karthikrambhatla7465 6 ปีที่แล้ว

      Wondering the same🤔

    • @lok7396
      @lok7396 6 ปีที่แล้ว +6

      For *fun*

    • @bernhard5295
      @bernhard5295 6 ปีที่แล้ว +2

      you can rewrite it as the product k=1 till n of n!/k!. so you get the product of permutations*. maybe hyperarrangement isn´t so stupid.

    • @fluffymassacre2918
      @fluffymassacre2918 6 ปีที่แล้ว

      Lok 739 you beat me to it

    • @bernhard5295
      @bernhard5295 6 ปีที่แล้ว +1

      (k-1)!**

  • @blacker4404
    @blacker4404 6 ปีที่แล้ว

    What about H(1/2)?

  • @Bodyknock
    @Bodyknock 6 ปีที่แล้ว +1

    I’m trying to think of where hyperfactorial would actually come up in a real life combinatorics problem but can’t think of one and didn’t find anything off-hand on Google. (Comparatively factorial n! is extremely useful and subfactorial !n is the number of derangements of n objects). I’m wondering if this came up in the course of a real world calculation or combinatorial proof or if it was just a function someone thought up that just seemed like it might have some interesting numerical properties.

  • @welltypedwitch
    @welltypedwitch 6 ปีที่แล้ว

    So... What exactly would you use this for? Apart from H(5) of course

  • @Math-bz8bw
    @Math-bz8bw 6 ปีที่แล้ว

    Hi. Can you write H (n) such as integral

  • @Ben.2000
    @Ben.2000 6 ปีที่แล้ว

    Is there any identety that conects the regular factorial to the hyper one? #yay!

  • @MrRyanroberson1
    @MrRyanroberson1 6 ปีที่แล้ว

    Well for negatives actually, due to the recursive, H(n)=H(n+1)/(n+1)^(n+1), and for negatives the n+1 is negative or zero, and you can flip the denominator and get a multiplying chain. H(-5)=H(5)×H(-1) (from odd H to odd H the ± is the same), and now we just need to define H(-1), and since H(0)=H(1)/1, we can understand 0^0 to be 1. This leaves 0^0 H(-1) = H(0), and therefore H(-1) is also 1, since 0^0 is 1

    • @MrRyanroberson1
      @MrRyanroberson1 6 ปีที่แล้ว

      The whole "from odd H" is wrong, there's a rule but it doesn't resolve itself to me at the moment

  • @acman4022
    @acman4022 6 ปีที่แล้ว

    Is there a definition of hyperfactorial which is an improper integral, like with factorial (gamma function) and derangements/subfactorial?

    • @eliasarguello9961
      @eliasarguello9961 6 ปีที่แล้ว

      Acman There are two ways I can answer your question. If you use the Barnes G-function (look it up) there is a way to relate the gamma function and the Hyperfactorial with the statement: H(z-1)*G(z) = e^((z-1)*(log (Γ(z)))). Another answer is that the Hyperfactorial is given by the integral: H(z) = (2π)^(-z/2) * e^(((z+1)C(2) + (integral from t=0 to t=z of ln(Γ(t+1)) dt))) where (x)C(y) represents the choose function.

    • @eliasarguello9961
      @eliasarguello9961 6 ปีที่แล้ว

      I know that the second one includes an integral inside an integral but please bear with that.

  • @lilyyy411
    @lilyyy411 6 ปีที่แล้ว

    my favorite note is H flat

  • @FGj-xj7rd
    @FGj-xj7rd 6 ปีที่แล้ว +6

    More like hypersharktorial.

  • @Gadget622
    @Gadget622 6 ปีที่แล้ว

    Judging by the title I was thinking it would be something like:
    f(n) = n ^ f(n - 1)
    So if n = 4 then
    f(4) = 4 ^ 3 ^ 2 ^ 1 = 4 ^ 3 ^ 2 = 4 ^ 9 = 262,144
    Following the same pattern, f(5) = 5 ^ 262,144, or roughly 6 * 10 ^ 183,230. And f(6) would be far too stupidly big to comprehend.

  • @anilsharma-ev2my
    @anilsharma-ev2my 4 ปีที่แล้ว

    Are you able to make an app over it ??

  • @mike4ty4
    @mike4ty4 6 ปีที่แล้ว

    How about integrating (x^3)/cos(2x) by expressing it with De Jonquiere's Polylogarithm (the Li_s(z) function)? I wanna see you labor and sweat with tears, see you have to use the full rainbow of pens, and/or see to it that they run out of ink in the middle of a derivation, and see you to have to recruit extra blackboards! I want drama! :g:

  • @rafaeldubois8192
    @rafaeldubois8192 6 ปีที่แล้ว +2

    Should try ¡n! Instead of H(n)

  • @michaelgandil1897
    @michaelgandil1897 4 ปีที่แล้ว

    Isn't the conclusion in the end mean that 0^0 equals 1?

  • @hnnagarathna7286
    @hnnagarathna7286 4 ปีที่แล้ว

    Where r u frm

  • @flyingpigeon2812
    @flyingpigeon2812 6 ปีที่แล้ว

    Im lovin the smilie's 😂😂😂

  • @michalnemecek3575
    @michalnemecek3575 6 ปีที่แล้ว

    I have a different formula for the hyperfactorial. assume n = 5 for this example
    Step 1:
    H(5) = 5^5*4^4*3^3*2^2*1^1
    Step 2 (still equal to H(5), but I won't put it there because of the width of a space):
    5*5*5*5*5*
    4*4*4*4*
    3*3*3*
    2*2*
    1
    Step 3:
    first column is 5!/0!, second one is 5!/1!, third is 5!/2! and so on...
    Step 4:
    H(5) = (5!/0!)*(5!/1!)*(5!/2!)*(5!/3!)*(5!/4!)
    Step 5 (again, not writing H(5)=):
    5
    Π 5!/(k-1)!
    k=1
    Step 6:
    replace 5 with n
    n
    H(n) = Π n!/(k-1)!
    k=1
    EDIT: in step 6 I absolutely had to write H(n)=

  • @toddbiesel4288
    @toddbiesel4288 6 ปีที่แล้ว

    H(5) = 86,400,000. Also, how about using ¡ as a factorial symbol?

  • @jorandax9059
    @jorandax9059 4 ปีที่แล้ว

    Wait, so ñ' isn't a proper notation?

  • @martinianofaure4270
    @martinianofaure4270 6 ปีที่แล้ว +1

    You can't have H(-1). Following that argument, H(0)=0^0*H(-1), and since 0^0 is undetermined, H(-1) is undetermined too.

  • @aLumpOfParticles
    @aLumpOfParticles 6 ปีที่แล้ว +1

    How about H(1/2)? 😁😁

  • @jzanimates2352
    @jzanimates2352 6 ปีที่แล้ว

    Hey blackpenredpen. Recently I have been watching dr peyam’s show, and mainly his videos on the half derivative of x and imaginary derivative of x. I would really like to see you try things like half intergrals and imaginary intergrals. Please like if you agree.

  • @JLConawayII
    @JLConawayII 6 ปีที่แล้ว

    We need a hypergamma function!

  • @Billkzy
    @Billkzy 3 ปีที่แล้ว

    4:27

  • @Theraot
    @Theraot 6 ปีที่แล้ว

    Now I wonder if there is a factorial for each version of street fighter.

    • @Theraot
      @Theraot 6 ปีที่แล้ว

      hyperfactorial
      superfactorial
      turbofactorial
      alphafactorial
      arcadeeditionfactorial
      ...

  • @rchishray7814
    @rchishray7814 6 ปีที่แล้ว +1

    Write it as !!n instead of H(n)

  • @yassinenacif418
    @yassinenacif418 4 ปีที่แล้ว

    Explostion in my mind : 5:26

  • @alan2here
    @alan2here 6 ปีที่แล้ว

    Not the next hyper-operation up? Lets try a few ranks.
    F(0, 4) = 5
    F(1, 4) = 10
    F(2, 4) = 24
    F(3, 3) = 9
    or maybe
    = ^{3, 2, 1} = elements of {9, 8, 1}

  • @jainpriyanka14978
    @jainpriyanka14978 6 ปีที่แล้ว +1

    Sir i think we can do its write .....

  • @aaronmagnin9871
    @aaronmagnin9871 6 ปีที่แล้ว

    isnt H(n) equal to n! x (n-1)! x (n-2)! x ... x 2! x 1! ?

  • @Ready4Music
    @Ready4Music 6 ปีที่แล้ว

    We have factorial, hyperfactorial, and…
    Hold up…
    Superfactorial??? 🤔😮
    Me: Calling Superman for explaining this type of factorial. 😁

  • @lilyyy411
    @lilyyy411 6 ปีที่แล้ว

    does this mean that there is a hyper gamma function for with this? (:V)

  • @STEVE_K_J
    @STEVE_K_J 6 ปีที่แล้ว

    So we have factorial of 1/2, subfactorials of 1/2 but what about the hyperfactorial and superfactorial of 1/2 ?!

  • @jorgelenny47
    @jorgelenny47 6 ปีที่แล้ว +1

    So 0 to the 0th power is 1... Intresting as bronzes

  • @JTX8000
    @JTX8000 6 ปีที่แล้ว

    HYPER GAMMA FUNCTION

  • @vp_arth
    @vp_arth 3 ปีที่แล้ว

    hyperfactorial is about hype

  • @Tcrrxzz
    @Tcrrxzz 10 หลายเดือนก่อน

    H(-1) approaches infinity

  • @Brianlotito
    @Brianlotito 6 ปีที่แล้ว

    I think that we can do hyperfactorial of a negative number.
    How? Idk, I just think that it is posibble

  • @Mysteri0usChannel
    @Mysteri0usChannel 5 ปีที่แล้ว

    Is there a Hypersubfactorial, or Subhyperfactorial?

  • @jatingarg625
    @jatingarg625 6 ปีที่แล้ว

    Took any question from iit subjective pllzz

  • @Hacker118
    @Hacker118 6 ปีที่แล้ว +5

    please solve ln (e + ln ( e + ln e + ... )) = ?
    in one minute!!!

    • @blackpenredpen
      @blackpenredpen  6 ปีที่แล้ว +1

      Titan Unspeakable
      Do you have the answer in exact form?

    • @Hacker118
      @Hacker118 6 ปีที่แล้ว

      @@blackpenredpen i only it is ln (e+x) = x will be one of the step

    • @GreenMeansGOF
      @GreenMeansGOF 6 ปีที่แล้ว

      e^x = e+x

    • @blackpenredpen
      @blackpenredpen  6 ปีที่แล้ว

      Yes, I noticed that.
      But do you have the answer in exact form?

    • @GreenMeansGOF
      @GreenMeansGOF 6 ปีที่แล้ว

      There are two solutions to the equation but I only found one.
      x = -e - W(-(e^(-e)))