# What's the story with log(1 + 2 + 3)?

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- Published on Jun 14, 2019
- This is my deep dive into the log(1 + 2 + 3) = log(1) + log(2) + log(3) log troll meme. I'm not going to link to any of the online discussions incase I accidentally encourage brigading. If you want to join in constructively, you can google them.

Huge thanks to Jane Street for becoming my channel's principle sponsor. If you're curious, this is what they do:

www.janestreet.com/what-we-do/

Ask them for a job here:

www.janestreet.com/join-jane-street/

We make Think Maths teaching resources to go with Stand-up Maths videos. For this one we have a worksheet of questions you can give your students before they watch the video. Plus I provide my excel file for the plot of the max values.

think-maths.co.uk/standupmaths-videos?yt-logs-meme#logs-meme

CORRECTIONS

- I mis-spoke and said "two" instead of "four" and "one" instead of "zero" but tried to fix both with titles in the edit. Sorry I did not have time to re-film it!

- Yes, my camera autofocus is annoying. I swear it has broken somehow; I thought I'd set it up right this time. I think Jane Street might have to get me a new camera.

- Let me know if you spot anything else!

Thanks to my Patreon supporters who help make these videos possible. Here is a random subset:

Michael Lehenbauer

Richard Dickins

Barry Salter

Maksym Borodin

James Williams

Sarah Gerweck

Support my channel and I can make more maths videos:

www.patreon.com/standupmaths

Music by Howard Carter

Filming and editing by Matt Parker

Design by Simon Wright

MATT PARKER: Stand-up Mathematician

Website: standupmaths.com/

Maths book: wwwh.umble-pi.com

Nerdy maths toys: mathsgear.co.uk/ **Entertainment**

Wolfram Stahl4 months ago^{+1822}Jane Street sponsor Matt Parker because "they just like maths and they use maths to solve complex problems in the financial world."

Matt: "half of two is two".

Frank Anthony Overton Jr.4 months agoBlox117 just the top half of it.

Blox1174 months ago@EnNarr91 what??

EnNarr914 months ago@Blox117 What?

Gibran A4 months ago^{+1}A Parker Division

astronelson4 months ago^{+1}Matt previously worked for Enron.

real gamer7 days agonobody:

matt: half of two is two

matt: the identity of addition is one

Michael Darrow10 days agoHe meant half of 4 is 2.

Peter ElGhazal15 days ago2:45

Can’t you just use the common factorial

Michael Darrow15 days ago2 2

1 2 3

1 1 2 4

1 1 1 2 5

1 1 1 1 2 6

1 1 1 1 1 2 7

1 1 1 1 1 1 2 8

...

Michael Darrow15 days ago1 1 1 1 2 6

Hasko Heinecke26 days agoTo calculate 13 times 17, add the two ones, which is 2. 3 times 7 is 21. Concatenate the 2 and 21 and you get 221. Voilá.

DanMonth agoThis was certainly not my favorite video of yours.

Sure, the maths is interesting enough, and reasonably well explained (except for the obvious errors which you've corrected), but I don't much care for this whole meme culture. Memes are among the lowest forms of comedy.

Chris DohertyMonth agoBob Loglaw

LaurelindoMonth agoI love the way Matt talks at 6:50-6:55. xD

_"If you want to, YOU can ADD as many log(1) as you want! =D"._

Leo1792 months ago"We've learned about logs, we've learned about maths memes."

TMY LLCK2 months ago1,1,1,1,1,1,1,3,5

Aidenne Campbell2 months agoCapital pi!!!?😲

John Weber2 months agoThe intro though

Harsh Ojha2 months ago#humble_pi

History is repeating itself!!!???

Amazon again sold lenses very cheaply. Go to the link below:

m.hindustantimes.com/tech/some-lucky-users-bought-13-000-camera-gear-for-just-94-thanks-to-amazon-prime-day-error/story-y6nwRDXjAOf4ee00pjtWCL.html?

Ratul Alam3 months ago^{+1}*Please add subtitle*

England is my city3 months ago1:50 if you multiply the factors of 28 you get 28^2

Badhbhchadh3 months ago6:46 Yep, 0! = 1.

TheRealDavis6603 months agoWell, log(4+3+1+1+1+1+1)

You can do loads of whole number solutions if you don't mind filling it with 1s

Edit: Never mind, you addressed this in the video.

ViliamF3 months agowhat's the name of the song in outros?

Laurelindo3 months agoI'm not sure if it has a real name, but you can listen to it all you want if you search for the video "STANDUPMATHS FULL THEME SONG - Howard Carter

" here on TheXvid.

Nobodyimportant3 months agoThis guy is a G, smart and social

Baskar M3 months agoName of the youtube channel is standupmath.....

But he is always sit.....🤔

Kierio043 months agoThe formula I made for any two numbers is n*(n+1/n)=n+(n+1/n). It’s a generalised equation that includes 2+2=2*2 and 101+1.01=101*1.01. Like or reply to this comment if you think this formula is better than Matt’s explanation :p

lukey666lukey3 months agoI have learnt that Log Trolls are a thing, everyday is a school day

amigalemming3 months ago9:30 But Jane Street is specialized on functional programming (OCaml), not Python (as far as I know).

William Taylor3 months agoI always check 3 4 5, its got to be 4 5 6 7, the problem is you need an equality because it creates a unit system of equality, 5 billion, basic constants.

Dinamy [Kw4]3 months agoCongrats, you made a very outdated meme

Seda Nelle3 months agoThis week on standupmaths: Does Matt Parker Actually Know Arithmetic?

Allan Boone3 months agolog(a+b+c)=log(a)+log(b)+log(c) if and only if a+b+c=a*b*c and a,b,c>0.

Mik Scheper3 months agoGreat vid, but please don't ever, ever use that horn sound again.

Seth Don3 months agoMatt, look out for flammable maths! He is a nuclear bomb in the math community. Beware!

mrkv4k3 months agoYou can use multiple ones. Like 1 + 1 + 2 + 4 = 2*4

Wafik Lotfallah3 months agoxy = x + y implies y = x/(x - 1).

Thus, x and y are positive integers iff x = y = 2.

Mart R3 months agoThe first thing I thought when seeing this "log troll" thing (in this video, I might add) was similar the "hang on bit" - given log(1)=0, any number should be able to be used. Maybe not as impressive if there's repetition, but still possible.

hey wrandom3 months agoHere is a proof if one tolerates only one 1.

Parker Lee3 months agoHey, Matt, theres a problem I've been struggling with and I wondered if you had any insight. I've been trying to find a function f(x) such that the derivative of f at a (for all a in the domain of f) Is equal to the area under the curve f(x) from 0 to a. I feel as though there is more than one solution. If you could help me tackle this, it would be much appreciated.

Soft-boiled3 months ago6:48 0 is not equal to ZERO!, which is equal to 1

BobC3 months agoSo, it seems there is no limit Matt will ever reach where he will deem a re-shoot necessary... Bring on the amusing text overlays!

Diego Marra3 months agoThe faces in the thumbnail and in the first 3 seconds are priceless.

Meaning I wouldn't really pay to see them.

RUSapache3 months ago3 x 1.5 = 3 + 1.5

log(3+1.5)=log(3)+log(1.5)

Narayan Bhat3 months agoi can sense the black curtain over there

Logan True3 months agoEverytime I hear Log Troll, I think of D&D trolls armed with tree logs as bludgeons.

Robert Telarket3 months agoWho are you? Are you at a university from Britain or down under? Your name please.

Taiken643 months agoIs there a way to rationalize "add ones until the sum equals the product of the original two numbers" without being explicit about it?

hexa3 months agoThumbs down for making this 10 minutes.

hexa3 months agoAll you had to say is that log(1)=0

Zyxok Unum3 months ago1+2+3=1*2*3

Alex King3 months ago^{+1}Can you do another Rubik’s cube video?

Alex King3 months ago^{+1}For the one person who sees this I just want to tell you

That God loves you ❤️❤️❤️❤️❤️

Just My Opinion3 months agoWhat is this suppose to be? Advertisement?

movax20h3 months agoWould prefect number works with a minor tweaks of putting some rational factor in front of the one log?

Willem van de Beek3 months ago^{+1}Oof, lots of trolls in the comments.

Thank you for showing that capital pi is the mass product. I knew capital sigma was the mass sum, but I was completely unaware of the mass product.

I learned something new from your video, so thank you for this! :)

Cameron Spalding3 months ago@3:36 thought of that before it came up

Nexus Clarum3 months agoso is 6 maximum-over-perfect? (｡◕‿◕｡)

qrpnxz3 months agoEven though this shouldn't work by all known laws of aviation, the log still flies.

Harrison Haines3 months agoDoesn't -1 -2 and -3 work for this as well.

Log ( -1 + -2 + -3) = log (-6)

where m = ℤ

Log (-1) = (2m + 1)*i*pi

Log (-2) = (2m + 1)*i*pi + log(2)

Log (-3) = (2m + 1)*i*pi + log (3)

and

Log (-6) = (2m + 1)*i*pi + log(6)

we know log (2) + log(3) = log(6), and for an infinite set of ms (2m+1)*i*pi*3 = (2m + 1)*i*pi

and so for an infinite set of m's log (-1 + -2 + -3) = log (-6).

A log troll and an i troll all in one!

Harry Rispin3 months agoYOu can't log a negatve number

Everett Kelly3 months agoThere is a pattern to these sum- product sets! Add a "1" to the set and add 1 to to last number.

2 , 2

1 , 2 , 3

1 , 1 , 2 , 4

1 , 1 , 1 , 2 , 5

...

Brian Scanlon3 months agoHalf Life 3 confirmed...

sur-taka3 months agolog(1+3+1+3+1)=log(1)+log(3)+log(1)+log(3)+log(1)

Derek Donner3 months ago1 + 2 + 3 = 6 = 2 * 3

Felix Stenger3 months agowhats the sub reddit he used the screenshot from?