Book:David Nelson/The Penguin Dictionary of Mathematics/Second Edition/Errata
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Errata for 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.)
Directed Angle
- angle
- Often an angle is regarded as the measure of the rotation involved in moving from one initial axis to another final axis (termed a direction angle).
Eugenio Beltrami
- Beltrami, Eugenio (1835-99)
William Brouncker
- Brouncker, William, Viscount (1620-85)
Edward Cocker
- Cocker, Edward (1631-75)
Nikolai Ivanovich Lobachevsky
- Lobachevsky, Nikolai Ivanovich (1793-1856)
Pietro Mengoli
- Mengoli, Pietro (1626-82)
Emmy Noether
- Noether, Amalie (Emmy) (1883-1935)
William Oughtred
- Oughtred, William (1575-1660)
Rhombohedron
- rhombohedron
- A hexagonal prism.
Willebrord van Royen Snell
- Snell, Willebrord van Royen (1580-1626)
Alfred Tarski
- Tarski, Alfred (1902-85)
Wronskian
- Wronskian
- It is named after the Polish mathematician Józef Maria Hoene-Wroński (1776-1853).
Primitive of $\sqrt {x^2 - a^2}$
- $\ds \int \sqrt {x^2 - a^2} \rd x = \frac 1 2 a^2 \cosh^{-1} \frac x a + \frac 1 2 {x \sqrt {x^2 - a^2} } + C$