Talk:Sine-Gordon equation

message: discussion of the significance and physical interpretation of the sine gordon model would be useful for non technical readers.  and perhaps... even technical readers.  as of yet, there is just a description of the terminology, but not why the theory is interesting, or who developed it.Wilgamesh 16:34, 22 October 2005 (UTC)
replies: text:  Hello, the animations are produced by Maple 5.0, and I am not a specilaist in animations, so I don't know what should I do to edit them in the way suggested by you. They are released under GFDL license, so anyone who knows what to do, can edit the animations any way he/she likes. See also the pendulum model, and the plain 2D model at Miroshnichenko's web. By the way I use almost exclusively Wolfram's Mathematica 5.2, that is why the algorithms for Maple are not written by me but by Miroshnichenko and colleagues. Regards, Danko Georgiev MD 02:14, 5 February 2007 (UTC)
thread_title: Untitled

message: The images and content inserted onto this page by User:Danko Georgiev MD have been removed. They were a very slightly modified version of work by Andrey E. Miroshnichenko to be found here. The colouring and time direction of the gif images had been computer-modified, but this does not alter the fact that these images were plagiarized without the permission of the original authors. Some explanation available in the original article had not been included by User:Danko Georgiev MD which explains why the images might have appeared mysterious. Plagiarizing images and content in this way seems entirely against the spirit of WP. I found the original images on google images by searching for kink and antikink where other moving images were also available. User: Danko Georgiev MD has indicated in the WP image files that he created the images from scratch: this does not seem to be the case. --Mathsci 05:09, 23 June 2007 (UTC)
replies: text: I don't see any evidence of plagiarism. The images look similar, but unless you can provide evidence that "the colouring and time direction of the gif images had been computer-modified" and not simply recreated from scratch, you should not remove the images. – Quadell (talk) (random) 00:56, 25 June 2007 (UTC)
replies: text:  The evidence is written in the last paragraph of the previous section if you read it carefully.  Danko Georgiev claims that his image was generated using the maple files of Miroshnichenko which he himself confesses he is unable to modify. Thus he himself tells us where the original image came from, but he has not explained in detail on the image file why and how he has received permission from Miroshnichenko to use the images or the original maple files wherever they are. --Mathsci 02:07, 25 June 2007 (UTC)
thread_title: Unauthorised use of computer-manipulated images

message: The TeX code:
: 
: a_{\textrm{Gordon}} \,
: a_{\mathrm{Gordon}} \,
: a_\text{Gordon} \,
: 
The results:
: 
:  a_{\textrm{Gordon}} \, 
:  a_{\mathrm{Gordon}} \, 
:  a_\text{Gordon} \, 
: 
I changed to the third version within this article.  No nested braces {{}}, and I think there's something to be said for simplicity. Michael Hardy (talk) 04:50, 18 February 2009 (UTC)
thread_title:  Typesetting 

message: What is the correct capitalization of Sine-Gordon?  I ran into this from the Topological quantum number page.  All the instances seem to have a lower-case "S" and capital "G" - except for the page title, but I read somewhere that that's a WikiMedia limitation.  The math is way over my head, but my impression is that "sine" refers to the trig/(other kind of "sine"?) function, not a person.  I'm sure this happens in other places as well - a type of a particular function that happens to be named after it's discoverer for instance.  Is there a "standard" naming convention?  I was going to "correct" this on the other page, but I left all the capitalization alone (as above) after seeing the apparent convention here. Jimw338 (talk) 16:33, 19 June 2013 (UTC)
replies: text: Lower case is correct, but it's OK that the title has an initial capital.  Dicklyon (talk) 06:09, 17 June 2014 (UTC)
thread_title:  Correct Capitalization? 

message: I'm not a specialist but, it seem's to me that, it is not right that, every asymptotic line parametrization has the form
:  ds^2 = du^2 + 2\cos\varphi \,du\, dv + dv^2,\, 
but rather that this is the definition of Chebyshev coordinates.  — Preceding unsigned comment added by 130.60.188.209 (talk) 14:11, 4 July 2014 (UTC)
thread_title:  asymptotic lines parameterized and Chebyshev coordinates 

message: In the introduction there is a link named "surfaces of constant negative curvature" that links to pseudosphere
But there are many more surfaces of constant negative curvature:
(see for example http://virtualmathmuseum.org/Surface/gallery_o.html#PseudosphericalSurfaces )
Three surfaces of revolution:
Pseudospherical Surfaces of the parabolic type (this is the tracioid or  pseudosphere)
Pseudospherical Surfaces of the hyperbolic type
Pseudospherical Surfaces of the elliptic type (called the conic type at the virtual math museum)
 
Other surfaces of constant negative curvature:
Dini surface (and i think this page is mostly about variations on the dini surface 
and the breezers, and others that are named on this page 
what to do now?
(PS I am not an expert in this field, nor on wikipedia)
WillemienH (talk) 10:08, 16 September 2014 (UTC)
thread_title:  Surfaces of constant negative curvature not always a pseudosphere 

message: Equinox ◑ 05:58, 1 April 2023 (UTC)
replies: text: The "Gordon" is Walter Gordon. The name comes from a physicist's 'joke' as the equation is similar in form to the Klein–Gordon equation \square\varphi^2 = \varphi, but in the sine-Gordon equation the right hand side is changed to \sin \varphi, hence the 'sine'. Zephyr the west wind (talk) 10:25, 1 April 2023 (UTC)
thread_title:  Who is "Gordon"? Whom is it named after?