User talk:Loudandras

Hello Loudandras and Welcome to Wikipedia! Welcome to Wikipedia! I hope you enjoy the encyclopedia and want to stay. As a first step, you may wish to read the Introduction. If you have not already created an account here, note that you do not have to log in to read or edit articles on Wikipedia, but creating an account is quick, free and non-intrusive, requires no personal information, and there are many benefits of having a username. Without a username, your IP address is used to identify you. If you have any questions, feel free to ask me at my talk page — I'm happy to help. Or, you can ask your question at the New contributors' help page. Here are some more resources to help you as you explore and contribute to the world's largest encyclopedia... Getting started Wikipedia Tutorial • How to edit a page • The five pillars of Wikipedia • Manual of Style • Be bold in editing • How to write a great article Getting your info out there Cite your sources • Neutral Point of View • Point of View • Verifiability • Policy Library Getting help New contributors' help page • Where to ask a question • Help Desk • Frequently Asked Questions Getting along Wikiquette • Civility • Sign your posts • Wikipedians • Conflict resolution • Please sign your messages on talk pages with four tildes(~~~~). This will automatically insert your "signature" (your username and a date stamp). The button, on the tool bar above Wikipedia's text editing window, also does this. If you would like to play around with your new Wiki skills the Sandbox is for you. Bduke (Discussion) 21:52, 21 January 2013 (UTC)

Your reversal of my edit to Table of spherical harmonics is fine if "Quantum Theory of Angular Momentum by D.A. Varshalovich, A.N. Moskalev, V.K. Kershonskii (World Scientific 1988))" really does support the correction you made, but you did not add it as a reference to the article. You also wrote in your edit summary "see e.g. Quantum ..". Are there other sources? The current reference to the Serbian Astronomical Journal certainly does not support all the content of this article. I came across this article because I need the information for a program I am writing. I looked for references but found none. I have been putting off writing the most important part of this new code, but when I do, I will have to check everything myself. This wikipedia article is unreliable, because it is not clear that the content is supported by reliable sources. Recently there have been several small changes made without any reference to a reliable source. Are you sure that book supports everything that is written in the article? If so, I will try to get it, and we can add it as a reference. --Bduke (Discussion) 21:52, 21 January 2013 (UTC)

Sorry for the lack of signature at your talk page and other technical deficiencies. Obvious newbie here. Short answer: real spherical harmonics are OK now for l=0, 1 and 2. You can check the complex ones in wolfram alpha: SphericalHarmonicY[l,m,theta,phi] gives you the answer (fortunately complex spherical harmonics with m=0 are real). I was guessing that wolfram alpha isn't a credible source either, that's why I stuck with the Russians' book. There should be a truckload of books containing the info you need. Meta-long answer: I'll see whether the book supports _everything_. It might take a while. If we're content with that, I can try and insert references up to some 'l' value. In my opinion, it might be better for your program to generate spherical harmonics with a fix, verified algorithm (I'm thinking recursion relation). It of course depends on your programming needs. As for the referencing of the article, it seems to me that I'll need a lot of time to figure out wikipedia and check the formulae... Loudandras (talk) 23:00, 21 January 2013 (UTC)