Talk:Mathematical constant

message: I see that someone posted the MRB Constant in the table. Per WP:AB, in clear-cut case, I corrected the year First Described and # of Known Digits. Marvin Ray Burns (talk) 23:47, 10 May 2009 (UTC)
replies: text: I corrected the documented first  time described.Marvin Ray Burns (talk) 02:04, 17 May 2009 (UTC)
replies: text: I am trying to retrieve an earlier documented time.Marvin Ray Burns (talk) 15:34, 18 May 2009 (UTC)
replies: text: I made corrections for a few pressing issues in the table.Marvin Ray Burns (talk) 02:19, 2 February 2011 (UTC)
thread_title:  Explanation of MRB constant changes

message: Since the Golden ratio is known to billions of digits (at least 17 billion per that article though this article suggests it's actually 100 billion), shouldn't the Square root of 5 also be known to the same billions of digits? After all:
 \sqrt 5 = 2 \varphi - 1 
Glenn L (talk) 19:50, 25 May 2009 (UTC)
thread_title:  Square root of 5: only "1,000,000" digits? 

message: Why is the Rydberg constant on the side of a page titled Mathematical constant? --Dgroseth (talk) 00:56, 16 August 2009 (UTC)
replies: text: Good point. It was used as an illustration of notation, but it's not a well chosen example for this page - I have replaced it with Champernowne constant. Gandalf61 (talk) 09:50, 16 August 2009 (UTC)
thread_title:  Rydberg constant 

message: Despite the simplicity of this approximation : 
if we refer to the NIST table the value of Mn/Me = 1838.6836605 and the error being 0.0000011. 
Now this approximation is approx. is way too far from the real value to be considered serious.
The value is 36/((2+2*5^(1/2))^(1/2)-2*Zeta(3))^2 = 1838.691257454... so the error is : 0.007...
 the error ratio is about 7000 times the standard error, please refer to the NIST 
document for explanations http://physics.nist.gov/cuu/Constants/Table/allascii.txt  —Preceding unsigned comment added by Plouffe (talk • contribs) 23:59, 29 January 2010 (UTC)
thread_title:  Mn/Me mass ratio in terms of Zeta(3) and the Golden ratio 

message: Is there any specific order for the table (beyond having the most known at top, obviously)? Magister Mathematicae (talk) 03:30, 2 April 2011 (UTC)
thread_title:  Order 

message: I was checking some of constants vs Wolfram Alpha, for Sierpiński's constant, WA returns  0.822825249 ... whic is completely different than the article lists here, I have no insight into the discrepancy.--Billymac00 (talk) 02:54, 18 April 2011 (UTC)
replies: text: Mathworld con--Billymac00 (talk) 03:09, 18 April 2011 (UTC)
thread_title:  Sierpiński's constant 

message: It would seem like there would be a section on combined constants for example e^pi or 2pi. John W. Nicholson (talk) 16:01, 10 January 2013 (UTC)
thread_title:  combined constants? 

message: Is this article redundant with "List of numbers" and should be merged into it? 
Also, if no on merger, on seeing the redundancy of the title with "Constant (mathematics)", I am wondering if there is a problem changing it to "Notable mathematical constants", "Important mathematical constants", or something else? 
John W. Nicholson (talk) 08:14, 27 September 2013 (UTC)
replies: text: In my view, the last two sections of this article should be merged with some table or list of mathematical constants; the rest of the article should be kept with the present name. The article Constant (mathematics) is clearly very basic and I think it should be merged with Variable (mathematics) to a new article Constants and variables. Any content from the old article constant term (presently redirects to constant (mathematics)) could be merged with polynomial or possibly algebraic expression. Isheden (talk) 13:37, 28 September 2013 (UTC)
replies: text: Well, for the two section which have the mathematical constants, I agree that they should be merged with List of numbers, but and that would lead to this page being hollow and not much of a reason for having an article here. As for the rest, you are going to have to have a better argument for merging Constant (mathematics) with Variable (mathematics) to make a new article Constants and variables. To me these are two different mathematics concepts which can hold there own in separate articles. At the same time, if you can make a page where you show that these two concepts can be merged and hold all of the related distinct concepts (like coefficient, parameter, or index), I would like to see it. But Constant (mathematics) and Variable (mathematics) should be where you work on that merger. --John W. Nicholson (talk) 16:21, 29 September 2013 (UTC)
replies: text: List of numbers is a list of Wikipedia articles according to the lead, therefore the tables in this article would not fit naturally there. If there is no natural target at present I would leave the sections here for now. However, the article Constant (mathematics) is redundant in my view. Of course, constants and variables are different concepts, but they are naturally presented together since they complement each other. Have a look at Constant (mathematics) with Variable (mathematics) and you'll see that both of them describe variable vs. constant in the lead. It would be natural to describe them in one article just as Dependent and independent variables or Free variables and bound variables are described in one article, because a constant is defined in contrast to a variable and vice versa. I don't see any natural reason to merge other concepts such as parameter or index with that article. The rationale here is to avoid large overlap between articles, see WP:Merging. Isheden (talk) 18:46, 29 September 2013 (UTC)

text: By the way, have a look at algebraic expression for an article that contains various related concepts. That article could easily be expanded. Isheden (talk) 19:52, 29 September 2013 (UTC)
thread_title:  Merge? Name change? 

message: Perhaps all "interesting numbers" should be included? 
On a more serious note, number 2 deserves a place as really quite notable - the first (prime) multiple, cardinality of the smallest divided set, the basis of 'even' numbers, the base of binary representation, of duality, the exponent of area, Euler characteristic of any convex polyhedron, and so on. It's just that it seems to be there almost all the time.
A contributor above suggested the inclusion of Tau  τ = 2π ; I'd agree. Tau seems to be sidelined on WP; Tau_(2π)#In_popular_culture is almost entirely about π (which has its own page Pi). To be fair, adoption of  τ = 2π is something of a minority interest - perhaps consensus considers it to be irrational, but nevertheless it has minor notability.
If i is notable as square root of -1, then so is j = 1/2+i(3^-2)/2, the major complex cube root of 1, solution to x^3=1 {the other roots being 1, & 1/2-i(3^-2)/2}. Of use in engineering, I distantly recall.
Corrigenda: I see in the table, "# of known digits" for 0, 1, i are each shown as "N/A". One might be of the opinion that is incorrect.
Also it is unclear to me what the order of that table is supposed to be - after re-sorting, I didn't manage to return to the pristine order except by re-loading. Could we know the rationale? And should imaginary constants be in another table, or come first? 
One is one and one is one (talk) 15:09, 3 December 2013 (UTC)
thread_title:  2, tau & j 

message: I have calculated the fractal approximations to most of the constants from this article and they can be found at this link Chrisdecorte (talk) 08:56, 18 January 2014 (UTC)
thread_title:  fractal approximations to some famous constants 

message: I added extra digits of pi and e. Timo3 11:25, 28 June 2014 (UTC)
thread_title:  Digits of pi and e 

message: I have found a new constant, Glineman's constant. Here are the first 100 digits.
0.7925041323164429323092398771713448225248095705293785692173351609518900063162775922847330033658820341...
John Glineman (talk) 11:52, 26 August 2014 (UTC)
replies: text: Please provide more details.  What is the constant for, where is it cited, what evidence is there that it is well known?  Thank you — Leegrc (talk) 13:28, 26 August 2014 (UTC)
replies: text: I invented it! John Glineman (talk) 14:05, 22 November 2015 (UTC)
thread_title:  Glineman's constant 

message: There is a nice gif for the MRB constant done by Ignacitum. Do you think it can find a place on the Mathematical constant page?
Marvin Ray Burns (talk) 16:55, 9 January 2015 (UTC)
thread_title:  MRB constant gif 

message: Why is this talk page move protected? Timo3 14:11, 27 June 2015 (UTC)
thread_title:  Move protection 

message: I came here to find what format should be used to represent constants. For example, for matrix, uppercase and bold is preferred.
I read somewhere that for constants should be used lowercase and upright format, but not sure of that.
The article needs to be more specific.  — Preceding unsigned comment added by 186.59.50.199 (talk) 18:12, 19 November 2015 (UTC)
thread_title:  Formant convention for representation 

message: I think the definition of pi is wrong: "The constant π (pi) has a natural definition in Euclidean geometry (the ratio between the circumference and radius of a circle),"79.19.51.136 (talk) 20:25, 28 August 2016 (UTC)
replies: text: Thanks, Gap9551 (talk) 20:48, 28 August 2016 (UTC)
thread_title:  Pi definition 

message: https://plus.google.com/106470124546166473435/posts/JCD8MfhDLNL
or:
https://www.researchgate.net/publication/311964993_Famous_constants_sorted_and_with_fractal_approximations?ev=prf_pub
Chrisdecorte (talk) 09:01, 1 January 2017 (UTC)
thread_title:  Famous constants sorted 

message: There should be a list of OEIS sequences for each constant. Bobby Jacobs (talk) 17:06, 20 February 2017 (UTC)
thread_title:  OEIS sequences 

message: I'm considering removing Tao from the "Short List" this page's short list of constants until proper references may accompany it. The given link actually only goes to a generic reference to the Greek letter with some disambiguation toward the constant. Marvin Ray Burns (talk) 00:01, 25 May 2017 (UTC)
thread_title:  Tao not ready 

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thread_title:  External links modified (January 2018) 

message: I do not want to start an edit war, but I have trouble understanding why you undid the change of the golden ratio from \phi to \varphi ? BFG (talk) 00:50, 7 August 2020 (UTC)
replies: text: Sorry, i thought it was vandalism from that 176.88 guy. Apophis4029 (talk) 01:51, 7 August 2020 (UTC)
thread_title:  Correct symbol for Golden Ratio 

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thread_title:  A Commons file used on this page or its Wikidata item has been nominated for deletion 

message: Is there a way to have input of "math constant" into the search box show this article instead of an article for a soccer player named "Matt Constant"?  — Preceding unsigned comment added by Silversplash (talk • contribs) 03:17, 19 May 2022 (UTC)
replies: text: Done. Created redirect page Math constant. BFG (talk) 07:16, 19 May 2022 (UTC)
thread_title:  Search Box 

message: I think the table should say, around 4000 BC, the time of (early) Proto-Indo-European and Proto-Semitic unities. These language groups have numerals for one, while earlier groupings have no numerals. Reciprocist (talk) 16:53, 30 June 2022 (UTC)
thread_title:  When one was first described?