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Information provided will be kept confidential. Please be aware of the <i>MathWorld</i> <a href="/about/faq.html">Frequently Asked Questions</a> page before writing.</p> <p>Please consider becoming a <i>MathWorld</i> contributor by filling out the following form. Your contributions will be gratefully acknowledged together with those of other <a href="/topics/MathWorldContributors.html"><i>MathWorld</i> contributors</a>. For additional information about contributing material, visit the <a href="/about/faq.html#contribute">FAQ on contributing</a>.</p> <p>There are currently a number of entries in <i>MathWorld</i> that are either incomplete or in the process of being modified. A complete listing of <a href="/contribute/entry.html">entries "under construction"</a> is also kept up-to-date, as is a list of <a href="/contribute/incomplete_entry.html">entries missing specific pieces of information</a>, and <a href="/contribute/updated_hyperlink.html">entries containing out-of-date hyperlinks</a>. Help in fleshing out these entries would be especially appreciated.</p> <ol> <li>If you'd like to <b>report a typo</b>, please include two parts in your message: <ol> <li>Quote the sentence or line that contains the error.</li> <li>Give the correct version of the line or error.</li> </ol> </li> <li>If you'd like to <b>add to an existing entry</b>, please provide: <ol> <li>The sentence preceding a good entry point for your addition.</li> <li>Exact wording for your entry, in plain text, <a href="http://wolfram.com/products/mathematica/" target="_blank">Mathematica</a>, or TeX.</li> <li>A vector-based image, if necessary. <a href="http://wolfram.com/products/mathematica/" target="_blank">Mathematica</a> or a <a href="http://www.maa.org/editorial/mathgames/mathgames_08_01_05.html" target="_blank">vector program</a> may help.</li> <li>For references, please follow the <i>MathWorld</i> format as closely as possible. <ul> <li>For a web page: <blockquote style="line-height:1em; margin:5px;"> Gourdon, X. ``The $10^{13}$ First Zeros of the Riemann Zeta Function, and Zeros Computation at Very Large Height.'' 2004. \url{http://numbers.computation.free.fr/Constants/Miscellaneous/zetazeros1e13-1e24.pdf}.\par </blockquote> </li> <li>For a journal article: <blockquote style="line-height:1em; margin:5px;"> Conrey, J.~B. ``At Least Two Fifths of the Zeros of the Riemann Zeta Function Are on the Critical Line.'' {\it Bull.\ Amer.\ Math.\ Soc.} {\bf 20}, 79--81, 1989.\par </blockquote> </li> <li>For a book reference: <blockquote style="line-height:1em; margin:5px;"> Wells, D. \titleisbn{The Penguin Dictionary of Curious and Interesting Numbers.}{0140080295} Middlesex, England: Penguin Books, p.~28, 1986.\par </blockquote> </li> </ul> </li> </ol> </li> <li>To <b>suggest a new entry</b>, or to rewrite and greatly expand a current entry, please: <ol> <li>First review the <a href="/about/faq.html#contribute">contributor guidelines</a>.</li> <li>Give the title, subject classification, and references.</li> <li>If attempting to rewrite an entry (not recommended for long entries), please incorporate all existing relevant information from the current entry.</li> </ol> </li> <li>For <b><i>MathWorld</i> Classroom comments</b>, please note that we <a href="/about/faq.html#moreinfo">cannot provide homework help</a>.</li> <li>To <b>report mathematical news</b>, please: <ol> <li>Provide a link to your source.</li> <li>Give a short summary for why your submission is newsworthy.</li> <li>We cannot report news on unpublished proofs of Fermat's Last Theorem or the Goldbach Conjecture. Also, note that we cannot review proofs.</li> </ol> </li> <li>To report a <b>typesetting glitch</b>, please: <ol> <li>First, try a page refresh. If that fails, please mention which browser you are using.</li> <li>Attach a screenshot, annotated and trimmed to the pertinent area.</li> <li>Equation number references currently display as (◇) instead of the correct number. This is a known bug that we hope to fix soon.</li> </ol> </li> <li>We always appreciate <b>kind words</b>. You might also visit <a href="http://www.ericweisstein.com/" target="_blank">Eric Weisstein's personal site</a>.</li> <li>For <b>help with a mathematical problem</b>, consider: <ol> <li>For questions about formulas, notation, and special functions, please first try the <a href="http://functions.wolfram.com/formulasearch/" target="_blank">formula search</a> and <a href="http://functions.wolfram.com/Notations/" target="_blank">list of notations</a> at <a href="http://functions.wolfram.com/" target="_blank">The Wolfram Functions Site</a>.</li> <li>Wolfram Research's powerful mathematics software <a href="http://wolfram.com/products/mathematica/" target="_blank">Mathematica</a> can be used to solve many mathematical problems.</li> <li>The Math Forum's <a href="http://mathforum.org/dr.math/" target="_blank">Ask Dr. Math</a> provides homework help.</li> <li>For calculus help, <a href="http://calc101.com/" target="_blank">calc101.com</a> provides step-by-step answers.</li> <li>For other homework help, please see our <a href="/about/faq.html#moreinfo">FAQ</a>.</li> </ol> </li> <li>We are regrettably not able to respond to questions of the form "<b>Is formula <i>x</i> correct?</b>" Almost always, the answer is "yes." If you have checked a formula yourself and have cogent reason to believe that it contains a typo, please send us a typo report stating, if possible, why the current formula is wrong and what changes are needed to correct it.</li> </ol> <h2 id="submit">Submit Your Contribution</h2> <p>There are currently a number of entries in <i>MathWorld</i> that are either incomplete or in the process of being modified. A complete listing of <a href="/contribute/entry.html">entries "under construction"</a> is also kept up-to-date, as is a list of <a href="/contribute/incomplete_entry.html">entries missing specific pieces of information</a>, and <a href="/contribute/updated_hyperlink.html">entries containing out-of-date hyperlinks</a>. 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