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An elliptic curve is not a function because it fails the vertical line test: If a vertical line intersects the curve more than once on an xy-plane, then the curve has more than one value of y for one value of x, and it doesn't represent a function.

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LiuYusuf 2024-08-26 00:14:30 +08:00
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ch04_keys.adoc
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@ -178,7 +178,7 @@ image::images/mbc3_0402.png["ecc-curve"]
Bitcoin uses a specific elliptic curve and set of mathematical
constants, as defined in a standard called +secp256k1+, established by
the National Institute of Standards and Technology (NIST). The
+secp256k1+ curve is defined by the following function, which produces
+secp256k1+ curve is defined by the following equation, which produces
an elliptic curve:
[latexmath]

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meta/github_contrib.adoc
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@ -189,6 +189,7 @@
<li>yurigeorgiev4</li>
<li>Zheng Jia (zhengjia)</li>
<li>Zhou Liang (zhouguoguo)</li>
<li>Suyang Liu (LiuYusuf)</li>
</ul>
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