Japanese Language Stack Exchange
Japanese Language Stack Exchange

Questions tagged [mathematics]

数学. The Japanese language as used in mathematical writing.

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Is [mathematical] 'analysis' in Japanese the same word as 'fine cuisine' in Japanese?

According to the Fields medal winner Cédric Villani, in the Japanese language the word 'analysis' is (I quote) "the same word" as the word for 'fine cuisine'. Such can be seen in a video of a recorded lecture of him entitled "The Extraordinary…
O0123
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How do you read simple arithmetic equations in Japanese?

My dictionary (EN → JP) suggests to translate "Three multiplied by four is twelve" as 3 × 4 = 12 without giving a hint as to how to read this in Japanese. How do you read simple arithmetic equations (involving only +, –, × and ÷) like the one…
Tobias
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Standard mathematical operations, expressed in Japanese

First-time poster on this channel, so please forgive me if I screw anything up... I'm currently writing a "Japanese Calculator" program as part of a personal project I'm working on which takes rōmaji input and converts the phrase, determines the…
Eliseo D'Annunzio
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The etymology of 関手【かんしゅ】

In Japanese mathematics, the word ‘functor’ is translated as 関手【かんしゅ】. What is the etymology of this word? I suspect that it is a pun on 関数 (function). This leads to two further questions: Why 関手 and not 函手? According to Wikipedia 函数 was standard…
Zhen Lin
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Pronunciation of 閾値 : いきち or しきいち?

Last week I saw the word 閾値 and when looking it up in Gjiten I see two pronunciations, both marked as "popular": 閾値 (いきち) (n) threshold (amount, dose, etc.); (P); 閾値 (しきいち) (n) threshold (amount, dose, etc.); (P); Which one should I use? In the…
Nicolas Raoul
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How do you say "if and only if" in Japanese?

I would like to know how to express mandatory conditions in Japanese. Since Japanese distinguishes between different types of languages, I should probably ask more precisely: What is the right way to express equivalence statements (the kind a…
Dominik
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Japanese dictionary for mathematics/computer science jargon

I study mathematics and computer science, and I'm starting to learn japanese. Could you suggest me dictionaries/sites/etc where I could learn terminology on these subjects?
Vicfred
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12
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How to pronounce "R → ∞ " in a mathematical context

For example on this wikipedia page: 一方、右辺第二項は R → ∞ のとき 0 に収束するので、... In English it would be something like "as R goes to infinity". How would you usually read this in Japanese?
mihi
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What's the difference between 三角 and 三角形?

I just had this terrifying conversation: What is "triangle" in Japanese? me: 三角 right? Then what's 三角形? me: Uhh... triangle? I've confirmed both of these translate to "triangle". Apparently they refer to different aspects of the triangle in Japan?…
Avery
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How to say at most one?

Let's assume that I want to define the concept of injective function: A function f is said to be injective if each element of the domain has at most one image. which would become something like…
永劫回帰
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How does one read AxB as in "A by B grid" in Japanese?

Here's the definition of sudoku in Wikipedia: 数独（すうどく）とは、3×3のブロックに区切られた 9×9の正方形の枠内に1〜9までの数字を入れるペンシルパズルの一つである。 How should one read 9×9の or 3×3の out loud?
Armen Tsirunyan
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7
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Why are Japanese characters not used in equations?

Why do Japanese texts/scientific articles not use kana/kanji in their equations? For example f(x) = x + 1 instead of f(あ) = あ + 1 I don't see the Cyrillic alphabet in equations either. Did someone once decide to only use latin letters or has this…
ersbygre1
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Expressing "not greater/less than" and "greater/less than or equal to"

I'm having trouble coming up with a way of saying "not greater than 0" and "not less than 0". Would the following sentences be natural/grammatical? If not, in what ways can the following be expressed? greater than 0/less than…
cypher
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How do you read out numbers in scientific notation in Japanese?

For example, "5 * 10^80" would be said as "5 times 10 to the power of 80" in English. When translating to Japanese, would I translate all of these operations literally or is there a more widely used idiom like "5 followed by 80 zeroes".
physBa
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Could a translation error lead to squares to not be considered as rectangles?

I'm reading a certain set of kindergarten/lower primary maths textbooks that is written by North American authors for an Asian company. Whenever students are asked to identify the number of rectangles in a given picture, the answer booklet gives the…
BCLC
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