# Questions tagged [citations]

Citation questions regards finding or discussing sources for theorems, conjectures and statements in articles, books or other credible sources.

28
questions

6
votes

2
answers

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### Citation for the ill-posed Ramanujan's problem

I've seen many times the following problem posed by Ramanujan:
$$\sqrt{1+2{\sqrt{1+3{\sqrt{1+\cdots}}}}} = \mbox{?}$$
This problem is also mentioned on Ramanujan's Wikipedia page along with the ...

2
votes

1
answer

110
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### Cite for fact that every r.e. degree bounds a 1-generic

Odifreddi doesn't give a cite (at least in proposition XI.2.10) for the proposition that every non-zero r.e. degree computes a 1-generic. What paper should I cite for this proposition?

4
votes

1
answer

111
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### Looking for a citation: the Rips $n$-complex of a $\delta$-hyperbolic group is contractible for high enough $n$

Given a $\delta$-hyperbolic group $G$, I have been told that the Rips $n$-complex of $G$ is contractible for high enough $n$. The only proof I have found for this statement is in an expository essay ...

3
votes

1
answer

596
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### Searching for the proof of a certain claim in Arnold's ODE book from 1992

I was reading today the book of Stephen Wiggins called "Global Bifurcations and Chaos" (the 1988 edition).
On pages 12-13 he writes the following:
Consider the following ordinary ...

14
votes

3
answers

683
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### Reference request for Linton's theorems on equational theories

This is a reference request for the following "well-known" theorems in category theory:
There is an equivalence of categories between finitary monads on $\mathbf{Set}$ and finitary Lawvere ...

5
votes

1
answer

385
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### Reference request: recurrence relation for Catalan numbers

I would like to know if the following recurrence relation for Catalan numbers (see mathoverflow.net/questions/191524 and also math.stackexchange.com/questions/2113830) has appeared in a paper or a ...

4
votes

1
answer

1k
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### Can/should I cite some Stack projects Tag in a paper

According to Stack project, when referring to them I should use the Tag system
https://stacks.math.columbia.edu/tags since
“The tag system provides stable references to definitions, lemmas, ...

7
votes

1
answer

4k
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### How to cite an article with an article number (instead of page range)

I am curious to know what is the standard way (in AMS style) to cite a journal article that has an article number and/or a page range.
For instance, here is a BibTeX entry from MathSciNet of an ...

3
votes

2
answers

1k
views

### Citing a published book that does not appear on MathSciNet

I want to cite some theorems in Several complex variables. VII by H. Grauert, Th. Peternell, and R. Remmert (eds.). It is a book published in 1994. However, I searched the publication lists of all of ...

11
votes

3
answers

1k
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### How to cite a MathSciNet review

I want to cite a MathSciNet review. Is there a standard format for that? (I couldn't find anything)

2
votes

2
answers

164
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### Piecewise-metrizability problems from Willard's Topology

Maybe someone familiar with Willard's textbook can help me out. Problem section 23G on pg. 174 is titled piecewise metrizability. The first problem is:
If a Tychonoff space $X$ is the union of ...

34
votes

2
answers

2k
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### Is it possible to cite a page in n-Lab in a research paper?

One of the concepts I need in my paper is best summarized on the n-Lab page. I tried my best to find a similar description of the same concept in a more "classical" reference, such as a paper or a ...

14
votes

2
answers

938
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### Inconsistencies in MathSciNet citation database

Starting this January, I observe more and more inconsistencies in the MathSciNet citation database. A typical situation is that the number of citations shown in the description of a paper differs from ...

5
votes

1
answer

363
views

### Diamond lemma for edge-colored directed graphs

Suppose we have a directed graph with colored edges such that (1) every vertex has at most one outgoing edge of each color, (2) for any path of length two, say from $u$ to $v$ to $w$, there exists a ...

5
votes

0
answers

233
views

### On Isbell's "On coherent algebras and strict algebras"

In section 1.2 (p. 284) of his "Coherence theorems for lax algebras and for distributive laws," Kelly writes:
It is a special case of the assertion of Isbell in [7], but this assertion has ...

23
votes

1
answer

2k
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### What should I cite for the Poincaré conjecture?

I'm writing a paper that, rather unexpectedly, needs the Poincaré conjecture for one of the results. (The paper has almost nothing to do with differential geometry!)
The conjecture was famously ...

4
votes

0
answers

265
views

### Verifying a source that lacks a citation

In this German Mathematics Wikibook page, formula $0.5$ lists the following equation
$$\int_0^1 \sin(\pi x) x^x (1-x)^{1-x} \ \mathrm{d}x = \frac{\pi e}{24}$$ as supposedly attributed to Ramanujan (...

41
votes

4
answers

4k
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### Missing citations of "to appear" papers on MathSciNet

Recently, looking at my author profile on MathSciNet (Am I a narcissist?), I saw that my citations counter is lower than what I expected. After a while, I realized what the problem is:
Many of my ...

7
votes

1
answer

337
views

### Origin of the numbers game

The numbers game is a (one-player) game played on a finite graph with an initial assignment of numbers to its vertices, studied by Alon, Bj\"orner, Brenti, Donnelly, Eriksson, Krasikov, Mozes, Peres, ...

16
votes

5
answers

5k
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### How to cite a sequence from The On-Line Encyclopedia of Integer Sequences (OEIS)?

In my paper I want to provide a reference for a sequence (in this case - A001970) from The On-Line Encyclopedia of Integer Sequences (OEIS).
However, I couldn't find an official bib entry for it (...

15
votes

6
answers

4k
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### How to refer to a “theorem” that you have shown to be wrong

I am writing a paper about a flaw that I found in a published paper. There, the statement is called “Theorem 2”. In my paper, I am reproducing the other paper’s definitions, and steps leading towards ...

11
votes

3
answers

7k
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### Best citations database

Which online service provides the most complete list of citations to given mathematical paper? I mean the citations both in published papers and in preprints. I guess scholar.google is the best, maybe ...

23
votes

3
answers

4k
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### Citation of a paper with a proof you would like to improve [closed]

Imagine that you are in the following situation: You write up a proof which eventually gets published. There you need a result which is not so well-known but it is contained in another paper P; ...

12
votes

4
answers

1k
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### Cite articles or book where I first found the result?

I'm writing up a paper and I'm not sure how to cite a few things. It concerns a conjecture made by Quillen. Some work has been done showing it's true in some cases, false in others. These results I ...

23
votes

2
answers

1k
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### Finding citations for 'well-known' results

I am almost ready to submit my most recent paper, and I find myself in a problem that has already occurred multiple times in my short publishing career. In this paper, I wish to state a result which ...

29
votes

3
answers

5k
views

### Citing papers that are in a language that you do not read.

I have a basic question that others have definitely considered.
Often there are papers that originally appeared in a language that one might not understand (and I mean a natural language here). I ...

62
votes

10
answers

48k
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### Should I not cite an arxiv.org paper which otherwise seems to be unpublished?

I want to cite a paper which is on arxiv.org but is not published or reviewed anywhere, and no publication or review seems to be in the pipeline. Would citing this arxiv.org paper be bad? Should I ...

16
votes

6
answers

5k
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### If Erdős is published as Erdös in a paper, which do I cite?

There seems to be a few papers around with Erdős written as Erdös. For example:
MR0987571 (90h:11090) Alladi, K.; Erdös, P.; Vaaler, J. D. Multiplicative functions and small divisors. II. J. Number ...