Questions tagged [математика]

This tag is for questions about mathematical terminology and notation in Russian that are not easy to answer with a dictionary. Examples could be (1) how a particular symbol or formula is pronounced and (2) the distinction between a pair of words like отношение and соотношение that have different meanings in Russian but are both translated into English by the same word "relation".

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1
vote
1answer
124 views

Join infinite distributive (mathematical)

Math term join infinite distributive in Russian? Also "meet infinite distributive"?
4
votes
5answers
404 views

Usage of the preposition “от”

A text I was reading used производная от полинома a few times. What extra detail does от add that is not present in производная полинома? Are производная от функции or сумма от чисел also acceptable, ...
4
votes
2answers
346 views

Usage of verb взять

Recently I found out from reading a text that "взять производную" (literally the same as "take the derivative" in English) is an acceptable synonym for продифференцировать, which surprised me since I'...
4
votes
1answer
163 views

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 American authors for a non-American company. Whenever students are asked to identify the number of ...
3
votes
1answer
199 views

How to pronounce long decimal numbers?

I know that there's not a very simple way to pronounce decimals in Russian. Literally it would translate as "X entire ones, X tenths/hundredths/etc.", where X is feminine. As such, 0.1 becomes ноль ...
3
votes
4answers
509 views

Handwritten sigma in mathematics

A year and a bit ago, I spent a semester studying mathematics in Moscow. Much to my surprise, rather than using the standard glyph "σ" to denote the Greek letter sigma, people invariably wrote a ...
3
votes
5answers
208 views

умножить на vs. на

I was talking with a child who, I was told, has learned some basic multiplication that he can do in his head, so I asked him Сколько будет восемь на семь? I'm not a native speaker, but I've given ...
3
votes
1answer
357 views

“Орел и решка” or “решка и орёл”?

In English, when the two sides of a coin are described it is conventional to speak about heads before tails. For instance, we'd ask "heads or tails?" when flipping a coin and someone has to choose a ...
5
votes
5answers
776 views

Pronunciation of J

I knew that J could be pronounced жи, like in French, but I was watching a lecture online at https://www.youtube.com/watch?v=vFxD6YFiLfU and the speaker calls J йот instead. See for instance 4:07 and ...
9
votes
3answers
1k views

How do you read fractions in Russian?

How do read aloud the fraction 2/3 in Russian ? Do you say: два на три ?, два над три ? два по три ?два под три ? or something completely different? Edit My example was not very good. I ...
7
votes
5answers
318 views

“cutoff” in an integral

Sometimes when physicists compute an integral (EDIT: in quantum field theory), they introduce what is called a "cutoff", which means an infinite bound in the integral is replaced by a finite parameter,...
3
votes
1answer
131 views

меняться и изменяться

What is the difference in usage between меняться and изменяться to convey the idea of "change" or "vary"? For example, if someone is talking about a vector field along a curve (that's the context in ...
4
votes
1answer
245 views

How does counting change the suffix of a word?

When counting things, as in 1, 2, 3, 4, ... what suffix is applied to the end of the words? For instance: There is 1 dog, but 2 cats. There are 3 planes available today. The first 4 doors are ...
4
votes
3answers
146 views

What case follows an integer counting variable?

When you have an integer number, it induces declension on the noun you are 'counting'. But to know which case, you need to know the specific number. What about integer unknowns? Example: If you ...
5
votes
2answers
393 views

What word was used in Russian for line before the borrowing of “линия”?

What word was used in Russian for a line before линия was borrowed in the 18th century? Was it черта? Or something else?
8
votes
3answers
674 views

What is Russian translation for “set comprehension”

As I understand from the Wikipedia article, "set comprehension" is an expression like { x | x ∈ R, 0<x<1} which is familiar to everyone who reads mathematical literature, but I have never seen ...
11
votes
2answers
921 views

Decimal Declension

I've always thought that the formal rules for declining decimals in Russian seem a little...unwieldy. For example, I gather that the correct way to say "pi is approximately equal to 3.14159" -- which ...
6
votes
1answer
417 views

Declension after decimal numbers

By integer numbers the rule is more or less clear: 1,21,.. год, 2,3,4,22,...года, 5,6,...,19...лет. How about decimal numbers? does one easily take the integer part of the number before the ...
12
votes
10answers
821 views

How to say “handwaving” in Russian? [closed]

If someone gives a derivation of a formula in math, physics, etc. without justifying the steps, you can say in English that the person is giving a "handwaving argument" or "this step is handwaving". ...
8
votes
2answers
289 views

n-th: как написать/произнести?

If I want to write the word "n-th" (as in n-th solution, n-th derivative,...), is it more conventional to write n-ый/n-ая/n-ое or n-й/n-я/n-е, or are both styles equally common? In terms of ...
7
votes
2answers
206 views

quadratic things

Does the phrase "quadratic formula" (the formula for the solutions of ax2 + bx + c = 0 [EDIT: I mean the famous formula with the square root of b2-4ac as part of the numerator]) not really get ...
12
votes
3answers
259 views

Which syllable is stressed in комплексный?

I looked in a couple of dictionaries, and they claim that комплексный is stressed on o - кóмплексный. However, when it comes to complex numbers in math, most of the professors at my university (many ...
13
votes
1answer
2k views

What are the different operators like =,<,>,% etc. called (named) in Russian

I made a Google search, but couldn't find any answer. I'd like to know the names of the operators +, -, x, /, =, <, >, %, {, }, (, ), :, &, etc. Also I would appreciate links pointing to ...
24
votes
6answers
1k views

mathematical pronunciation of 1

I have a question about pronouncing 1 in Russian for mathematics. When 1 appears by itself on the right side of an equation (or inequality or congruence or other mathematical relation), it seems from ...