lame oval or super ellipse <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \left({\frac {x}{2}}\right)^{4}+\left({\frac {y}{1}}\right)^{4}=1}"><semantics><mrow class="MJX-TeXAtom-ORD"><mstyle displaystyle="true" scriptlevel="0"><msup><mrow><mo>(</mo><mrow class="MJX-TeXAtom-ORD"><mfrac><mi>x</mi><mn>2</mn></mfrac></mrow><mo>)</mo></mrow><mrow class="MJX-TeXAtom-ORD"><mn>4</mn></mrow></msup><mo>+</mo><msup><mrow><mo>(</mo><mrow class="MJX-TeXAtom-ORD"><mfrac><mi>y</mi><mn>1</mn></mfrac></mrow><mo>)</mo></mrow><mrow class="MJX-TeXAtom-ORD"><mn>4</mn></mrow></msup><mo>=</mo><mn>1</mn></mstyle></mrow><annotation encoding="application/x-tex">{\displaystyle \left({\frac {x}{2}}\right)^{4}+\left({\frac {y}{1}}\right)^{4}=1}</annotation></semantics></math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/cf26c25f7f85badd038b1c13973cd3cd23173c70" class="mwe-math-fallback-image-inline" aria-hidden="true" style="vertical-align: -1.838ex; width:18.925ex; height:5.343ex;" alt="{\displaystyle \left({\frac {x}{2}}\right)^{4}+\left({\frac {y}{1}}\right)^{4}=1}"></span>
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