For the discussion of math. Duh.

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My number is arguably 4. I once got help on my chemistry lab report from my granddad, who was Erdos-3, so yeah. It wasn't published, but I still say it counts.
A French prisoner was to be guillotined, but the man reading the charges though he was nobility and added a "de" to his name. He replied, "Je ne suis pas ici pour qu'on m'allonge, mais qu'on me raccourcisse."

TheWhiteDeath

Posts: 9
Joined: Sat Apr 16, 2011 6:37 pm UTC

I'm going to be a 5! Although not according to the Collaboration Distance Calculator. That has me as a 6. But searching coauthors of my coauthor shows that I'm a 5. I'm being published in the European Physical Journal Plus. A (not quite publication) draft is here.
AMathematician

Posts: 20
Joined: Wed Jun 29, 2011 3:14 pm UTC

jaap wrote:
njperrone wrote:
jaap wrote:And I thought is was common knowledge that sums can only be taken over a countable number of things, and Sigma notation implies that. Summing over an uncountably infinite number of things is impossible, unless you use infinitesimals and that just results in integration.

That statement is itself a contradiction. Because infinity itself is uncountable.

The integers are countably infinite, which is what I meant with countable in the above. The reals are uncountably infinite. The latter means roughly speaking that you cannot use an index number xi to count off all the reals, even if you could count for an infinite amount of time.

Even if some time has passed I really need to say something: when you write in an environment that defines itself as mathematic, you have to be precise. "Infinitesimals" and "infinity itself" are, among others, NON precise mathematical concepts. Actually you can define sums of numbers, even infinite ones (cardinals or ordinals), over a set of indices of any nature, even uncountable (obviously it has to be a set, as defined for example with the Zermelo-Fraenkel-Choice axioms; you cannot define a sum over the paradoxical set of Russell, as far as I know). As a reference I suggest you read the first volume of N.Bourbaki work: "Set Theory", chapter III.

However, in order to be not so much off-topic, my Erdõs number is less or equal than 6.
timeodanaos

Posts: 2
Joined: Mon Oct 10, 2011 11:03 am UTC

skullturf

Posts: 532
Joined: Thu Dec 07, 2006 8:37 pm UTC
Location: Delaware

I'm too young (and also not Gauss) to have written any papers yet, but my girlfriend's grandfather has an Erdős number of 1. So I like to pretend I have a 3-point-something.
QuigleyQ

Posts: 7
Joined: Sat Feb 06, 2010 2:35 am UTC

QuigleyQ wrote:I'm too young (and also not Gauss) to have written any papers yet, but my girlfriend's grandfather has an Erdős number of 1. So I like to pretend I have a 3-point-something.

Cool!

Out of curiosity, do you mind if I ask you who your girlfriend's grandfather is/was?
skullturf

Posts: 532
Joined: Thu Dec 07, 2006 8:37 pm UTC
Location: Delaware

skullturf wrote:
QuigleyQ wrote:I'm too young (and also not Gauss) to have written any papers yet, but my girlfriend's grandfather has an Erdős number of 1. So I like to pretend I have a 3-point-something.

Cool!

Out of curiosity, do you mind if I ask you who your girlfriend's grandfather is/was?

Seymour Schuster. The papers were on graph theory, so I understood the first half-page. And that's it. :\ http://www.emis.de/classics/Erdos/cit/76705089.htm http://www.emis.de/classics/Erdos/cit/47905054.htm
QuigleyQ

Posts: 7
Joined: Sat Feb 06, 2010 2:35 am UTC

### Re:

cmacis wrote:But there can be only one 0, also no more 1s are possible. If you hunt out the 1s you might get a 2.

The people with Erdos numbers 1 and 2 are listed online. No one bothers with the 3s, because there are so many of us. (Sniff!)

Yes, I'm a 3 ... Erdos -> Nesetril -> Robin Thomas -> me.

Interestingly enough ... I had a cold when Erdos was vising UNL, and Earl Kramer asked whether I wanted to be introduced. I declined, deciding that it would probably not look good if I ended up being the person who gave Erdos a cold which killed him. (I saw him at Georgia Tech a couple of times, including once about a month before he died.

Ine of these times was when I had been invited to GT for graduate school, and Dad and I were checking out the place. When we walked by an office, Craig Tovey was explaining something to Erdos, who looked almost asleep. In fact, Dad later said that he wanted to yell out, "He's not paying attention to you! He's asleep!" Of course, I later told him who the almost-asleep guest was ...)

Proginoskes

Posts: 309
Joined: Mon Nov 14, 2011 7:07 am UTC
Location: Sitting Down

Finally wrote my first paper. Hopefully many, many more to follow.

http://arxiv.org/abs/1112.3952
dan131m

Posts: 8
Joined: Mon Oct 19, 2009 6:30 am UTC

### Re: Re:

Proginoskes wrote:
cmacis wrote:But there can be only one 0, also no more 1s are possible. If you hunt out the 1s you might get a 2.

The people with Erdos numbers 1 and 2 are listed online. No one bothers with the 3s, because there are so many of us. (Sniff!)

Yes, I'm a 3 ... Erdos -> Nesetril -> Robin Thomas -> me.

I'm a 3 as well. Erdos -> Selfridge -> Cohen -> me. I think half the people in my department are 3's.

delooper

Posts: 21
Joined: Thu Jan 19, 2012 7:40 am UTC

delooper -- we may or may not know each other. Of course, different people reveal different amounts of information about themselves on the internet, but I am a mathematician who's originally from British Columbia and did my BSc and PhD in that province.

(I'm also a 3 by the way.)
skullturf

Posts: 532
Joined: Thu Dec 07, 2006 8:37 pm UTC
Location: Delaware

skullturf wrote:delooper -- we may or may not know each other. Of course, different people reveal different amounts of information about themselves on the internet, but I am a mathematician who's originally from British Columbia and did my BSc and PhD in that province.

(I'm also a 3 by the way.)

No, I'm pretty sure we don't know each other. I got my B.Sc at U.Alberta, Ph.D at Cornell, 4 postdocs (NY, Oregon, MPI Bonn, IHES France) later and I'm in BC.

delooper

Posts: 21
Joined: Thu Jan 19, 2012 7:40 am UTC

My most recent paper (well, preprint) is arXiv:1203.1633 [cs.CC], which is by far the most fun paper I've written. My Erdos number is 3, through this paper with Man-Duen Choi.
Homepage: http://www.njohnston.ca
Conway's Game of Life: http://www.conwaylife.com

NathanielJ

Posts: 878
Joined: Sun Jan 13, 2008 9:04 pm UTC

NathanielJ wrote:My most recent paper (well, preprint) is arXiv:1203.1633 [cs.CC], which is by far the most fun paper I've written. My Erdos fish is 3, through this paper with Man-Duen Choi.

Your article got a mention in a weekly maths podcast if you're interested. http://pulse-project.org/node/417 time - 41:30.

Talith
Proved the Goldbach Conjecture

Posts: 848
Joined: Sat Nov 29, 2008 1:28 am UTC
Location: Manchester - UK

Talith wrote:Your article got a mention in a weekly maths podcast if you're interested. http://pulse-project.org/node/417 time - 41:30.

Homepage: http://www.njohnston.ca
Conway's Game of Life: http://www.conwaylife.com

NathanielJ

Posts: 878
Joined: Sun Jan 13, 2008 9:04 pm UTC

The paper with Raeburn gives me Erdos number 4.

I'm not allowed to post links
Sammus

Posts: 5
Joined: Sat Sep 13, 2008 11:27 am UTC

My Erdos number = 4, too
chuchundra2

Posts: 2
Joined: Fri Jun 22, 2012 12:08 pm UTC

2 (through Ronald Graham). Yesssssss

Here's the paper! We prove that the internet exists, unless a wire costs an integer number of dollars.

Lopsidation

Posts: 122
Joined: Tue Oct 27, 2009 11:29 pm UTC

I don't yet have a published paper, but someone is writing a paper based on work I helped with, so if I wind up getting co-author credit on that then I will finally have a finite Erdos number (6, if I got it right)!
pollywog wrote:
Wikihow wrote:* Smile a lot! Give a gay girl a knowing "Hey, I'm a lesbian too!" smile.
I want to learn this smile, perfect it, and then go around smiling at lesbians and freaking them out.

ConMan

Posts: 1321
Joined: Tue Jan 01, 2008 11:56 am UTC
Location: Where beer does flow, and men chunder.

My first paper: http://arxiv.org/abs/1308.6498. Local linear models can act as universal approximators even with randomly assigned (fixed) operating points, and an upper bound on the required number of models is given.

Since I am the sole author, I don't have an Erdos number
Lawrencelot

Posts: 16
Joined: Sun Oct 13, 2013 8:10 am UTC

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