Spunem ca o curba \( c:I\to\mathbb{R}^{2} \) este ovala daca ea este regulata, simpla, inchisa, convexa si are curbura pozitiva in fiecare punct.
Sa se demonstreze ca numarul de varfuri ale unei curbe ovale este cel putin \( 4 \).
numarul de varfuri ale unei curbe ovale este cel putin 4
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Cezar Lupu
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numarul de varfuri ale unei curbe ovale este cel putin 4
An infinite number of mathematicians walk into a bar. The first one orders a beer. The second orders half a beer. The third, a quarter of a beer. The bartender says “You’re all idiots”, and pours two beers.
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Teodor Cioaca
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Iulian Cimpean
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