mathematics - How did the obelus ÷ come to stand for division ...
The formula with the obelus is merely tabulated by Rahn with no text, and if the motivation was known, Cajori would have mentioned it in History Of Mathematical Notations, which is a …
Why is the radical symbol $\\sqrt{}$ called "radical"?
"Radical" comes from Latin "radicalis", having roots, an equivalent "radix" was also commonly used earlier. While Rudolff did use the radix in 1525 his did not have the overbar on top, now …
Why choose symbol $\\sum$ to be the summation operator in …
See Forian Cajori, A History of Mathematical Notations (1928, also Dover reprint), Vol.II, page 61:. 438.The sign $\Sigma$ for summation is due to Leonhard Euler ...
How did Hindu-Arabic Numerals get their shapes?
2023年11月5日 · I’ve noticed a recurring post on social media that presents an image suggesting the shapes of Hindu-Arabic numerals are connected to the angles within their design: This …
How did Ruffini discover his method of polynomial division?
2018年12月30日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for …
notation - History of Science and Mathematics Stack Exchange
2019年1月7日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for …
How did the theory of the Horus-eye fractions originate?
2015年6月15日 · In a book, I saw a short anecdote about something called the "Horus-eye" hieroglyph, supposedly used in parts to represent fractions (the book dates to 1997). …
What does the "G" for the similitude groups stand for?
How did the obelus ÷ come to stand for division? 2. Dimension of the candela unit: What does J stand for? 4.
Dimension of the candela unit: What does J stand for?
2019年8月3日 · The J symbol can represent the unit of energy but it's also the symbol for the dimension of the candela (or luminous intensity). For the energy unit, it clearly comes from the …
When did contemporary practices for indicating ecliptic longitude ...
2021年8月28日 · Ecliptic longitude may be expressed in degrees; my understanding is that prior to the 19th century, expressions of ecliptic longitude contained zodiacal signs. What …