Hallo everyone,↵
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Do you know any simple formulas that are often unknown to many? For me, some can be mentioned are ↵
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- Graph: Euler characteristic, Handshaking theorem, Caley Formula, Kirchhoff's theorem, Kőnig's theorem↵
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- Polygon: 2-Ear Theorem, incenter formula of a triangle, pick theorem, Shoelace Formula↵
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- Logic: Pigeonhole↵
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- Prime: Fermat, Wilson's theorem↵
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- Number: McNugget theorem↵
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- Fibonacci: Zeckendorf's theorem↵
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- Counting: Burnside Lemma, stars and bars↵
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- Combinatorics Identity: Vandermonde's Identity, Hockey-stick identity↵
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- Math: Linearity of Expectation↵
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- Other: harmonic series sum↵
↵
... And what about you? Can you share some?↵
↵
Thank you.
↵
Do you know any simple formulas that are often unknown to many? For me, some can be mentioned are ↵
↵
- Graph: Euler characteristic, Handshaking theorem, Caley Formula, Kirchhoff's theorem, Kőnig's theorem↵
↵
- Polygon: 2-Ear Theorem, incenter formula of a triangle, pick theorem, Shoelace Formula↵
↵
- Logic: Pigeonhole↵
↵
- Prime: Fermat, Wilson's theorem↵
↵
- Number: McNugget theorem↵
↵
- Fibonacci: Zeckendorf's theorem↵
↵
- Counting: Burnside Lemma, stars and bars↵
↵
- Combinatorics Identity: Vandermonde's Identity, Hockey-stick identity↵
↵
- Math: Linearity of Expectation↵
↵
- Other: harmonic series sum↵
↵
... And what about you? Can you share some?↵
↵
Thank you.