Filtered Ring

See also

This entry contributed by Margherita Barile

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More things to try:

• 8_1 knot
• div (x^2-y^2, 2xy)
• inflection points of x+sin(x)

Cite this as:

Weisstein, Eric W., with contributions by Margherita Barile. "Filtered Ring." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/FilteredRing.html

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