Review waiting, please be patient.
This may take 6 weeks or more, since drafts are reviewed in no specific order. There are 1,136 pending submissions waiting for review.
Where to get help
How to improve a draft
You can also browse Wikipedia:Featured articles and Wikipedia:Good articles to find examples of Wikipedia's best writing on topics similar to your proposed article. Improving your odds of a speedy review To improve your odds of a faster review, tag your draft with relevant WikiProject tags using the button below. This will let reviewers know a new draft has been submitted in their area of interest. For instance, if you wrote about a female astronomer, you would want to add the Biography, Astronomy, and Women scientists tags. Editor resources
Reviewer tools
|
The three Arnold invariants, J+, J- and St, introduced by Vladimir Arnold in 1994, are mathematical entities used to classify closed plane curves. The J+ invariant is defined for closed differentiable curves immersed in the plane. It is a numerical value associated with direct tangencies. The J- invariant is associated with inverse tangencies. The St invariant is related to the number of triple points a curve has.[1][2][3][4]