User talk:Leduyquang753

Welcome! Just type anything you want to say as long as it meets the rules. Lê Duy Quang (Make some words | Contributions) 01:05, 24 June 2018 (UTC)

Symbols for the division operation
Hi. I was planning to talk to you about the division operators and other math notations you used on Tutorials/Enchantment mechanics. Before I could get to it, I saw your last edit with the summary "so that everyone won't debate about whether to use : or / for division", and a little while ago I saw your topic on the Community Portal talk page. Those answered a lot of my questions.

Apparently, Vietnam uses the "decimal comma" convention. I was aware that the "," and "." symbols were reversed (relative to the U.S.) in some countries, but I'd never seen ":" used for the division operator. I don't think the British use it that way either, even though some U.K. countries use the decimal comma. Do you know of any other countries besides Vietnam that use ":"?

Also, in your last edit you returned to using ';' (semicolon) as the separator in. That's probably motivated by the decimal-comma convention too, although it's not actually part of it. In the U.S. (and on the wiki), commas are always used as separators in math. (There are exceptions in certain high-level math disciplines, but we wouldn't be using those on this wiki.)

I also wanted to point out that we traded edits over one bit for which we were both using the wrong notation. It's in Step Three, where you originally wrote "the segement [0; T]", which I changed to "the interval [0, T]", which you then changed again to "the half range [0; T)". All of those edits were wrong, because the text is describing how to choose a random integer. The square bracket notation is only used with real numbers, because it doesn't make sense with integers. For example,  (which is termed a "half-open interval", by the way) denotes all values n such that 0 ≤ n < T. But in the integer domain, the largest value less than T is T−1, so   would denote the same set of values. But there's no real advantage to using the bracket notation with integers, so integer ranges are usually denoted in English using one of the older conventions   or  . (A lot of our readers wouldn't have any idea how to interpret the bracket notation, anyway. We learn it in high school, but most people never use it after they finish school and they forget they ever knew it.)

In answer to your question on the Community Portal, I think there's a way to get CSS to change it in your browser, but the wikitext would have to mark it somehow (probably with a class). Typically, that would mean using a template to generate the necessary marker. But most editors wouldn't see the point of doing that, since they don't know your preferred notation even exists, so it would be hard to get them to comply. In other words, you'd probably have to do most of the wikitext editing yourself, and keep it updated when people take out the template calls because they don't know why they're needed. I'm sorry you find it challenging to interpret the English-based notation we use, but unfortunately I don't think there's a good solution for you.

– Auldrick (talk &middot; contribs) 07:29, 24 October 2018 (UTC)


 * OK, I will talk about this in a more detailed way.


 * First, about the math notation, actually there isn't only one way of notating it in Vietnam. In education, primary school students use a cross (×) for multiplication, and when they go up to the secondary school, they are taught to denote it by a dot (.); and in any level, they use a space for digit grouping. However, people that are not students use a dot to group the digit instead (!). Even the currency of Vietnam use dots to group the digits for the value of money, e.g. 200.000 (two hundred thousand dong). So even in Vietnam itself this has already been pretty confusing, and after reading this you can understand why I can't adapt to a third, or even fourth, way of notation.


 * Actually, I do code, and every programming language uses the US' format, because why not, and I usually mess up typing real numbers. For instance, there was one time I typed the coordinates for a triangle, which was supposed to be, however because I am used to Vietnamese's kinda thing, I typed  . The consequence was I wasted 20 minutes figuring out what caused the triangle to be a weird shape. Luckily, most of the time I work with integers, so that hasn't become a big problem.


 * And for the intervals, I actually thought very carefully of it before entering. You can see my original phrase: "a random integer in the segment [0; T]". I later changed it to "[0; T)" because I was wrong. And both two are correct because although [0; T) is a set of any real number a that satisfies 0 ≤ a < T, but the word integer eliminates all the numbers that contain a meaningful decimal part. And why did I use segment and half range? In Vietnamese, [a; b] is called as "đoạn" which means "segment", [a; b) is "nửa khoảng" means "half range". I basically translated those to English. And I looked up Wikipedia, the page doesn't have any terminology for interval types, calling [a; b] as "closed interval" and [a; b) as "left-closed, right-open interval".


 * For evidence, here is a page in the textbook "Algebra 10" in Vietnam that defines types of intervals:


 * [[File:Math interval types.PNG]]


 * "II - FREQUENTLY USED SUBSETS OF R


 * In mathematics we usually meet these subsets of the set of real numbers R.


 * Range


 * (a; b) = {x ∈ R | a < x < b}


 * (a; +∞) = {x ∈ R | a < x}


 * (-∞; b) = {x ∈ R | x < b}.


 * Segment


 * [a; b] = {x ∈ R | a ≤ x ≤ b}.


 * Half range


 * [a; b) = {x ∈ R | a ≤ x < b}


 * (a; b] = {x ∈ R | a < x ≤ b}


 * [a; +∞) = {x ∈ R | a ≤ x}


 * (-∞; b] = {x ∈ R | x ≤ b}.


 * The symbol +∞ is read infinitely positive, the symbol -∞ is read infinitely negative."


 * So I hope this answers many of your questions.


 * P/S: You mentioned the problem of many readers not knowing what an interval notation means, I was not the first one to notate it. Before deciding to notate this way I read Far Lands which used the exact kinda notation:


 * "a remainder in the interval [0, 1) suitable for interpolation. [...] It covers an interval of [, ) without causing any problems. [...] Each noise generator picks a random offset in [0, 256) to add to its input."


 * Lê Duy Quang (Make some words | Contributions) 12:44, 24 October 2018 (UTC)


 * Thanks very much for the very thorough reply. I did want to direct your attention to this section on the Wikipedia article I was using. It supports my claim that bracket notation isn't usually used for integer intervals.
 * As for Far Lands, that article is somewhat controversial. There have been attempts to get rid of it and impassioned pleas to keep it, and it's become kind of an orphan that the old-timers here tend to neglect rather than stir up more debate about it. The same is true with a lot of the tutorials. Because the old-timers mostly ignore these articles, many of them are of lower quality and shouldn't be consulted for examples of acceptable style. Just sayin'. – Auldrick (talk &middot; contribs) 15:55, 24 October 2018 (UTC)


 * That Wikipedia article was exactly what I referred. Indeed the intervals are originally to notate a subset of R, but as I said the word integer clearly restricted that set to integers only. If this notation is hard for readers, I may change it and may also rewrite the page Far Lands as well. Lê Duy Quang (Make some words | Contributions) 04:35, 26 October 2018 (UTC)


 * The bracket notation is something we learn in high school, but hardly anybody needs it in their adult life so most people forget they ever knew it. (I didn't because I'm sort of a mathephile.) And of course, many of our readers are young children whom I think wouldn't have been exposed to it yet. So I'd recommend not using it unless the situation involves a lot of dense math where precision is important and which the average person couldn't follow anyway. Literally anybody should understand the X–Y notation (if only imperfectly), and I think most would understand X..Y if they've ever studied programming.


 * I hope you don't feel I've ever talked down to you. (Is that an idiom you know? If not, it means something like "treat someone as an inferior in a speech act".) I try to adjust my vocabulary and sentence structure for my audience, but these days it's much harder with non-native-English speakers because a lot more of them (like you) are so much better at English than in the past, yet they still lack a lot of the cultural background and shared experience that's so important in communicating. I only just noticed on your user page that you're in grade 10; I was very uncertain of your age. Nevertheless, I have a lot of respect for your command of the many subtleties of English. So if at any time you felt disrespected, please accept my apology. – Auldrick (talk &middot; contribs) 05:44, 26 October 2018 (UTC)


 * Oh well I didn't feel anything that hurts my heart from you, maybe it's just me not being a native speaker of the most popular language in the world. In fact, your thoughts are very constructive and I appreciate. I am still very fine and happy as of now, so you can keep being yourself. Lê Duy Quang (Make some words | Contributions) 05:49, 26 October 2018 (UTC)

Proofreading Minecraft
Some of the changes you made to Minecraft in this edit were in error. I have corrected them, but thought you might like an explanation since you're working on your English skills.
 * In some places you changed semicolons (';') to commas. In English, a semicolon can be substituted for a period between sentences to hint that the two statements are linked more strongly than a period would suggest; the second one explains or restates the first in some way, as it does in this sentence. (Most non-professional writers don't use semicolons this way, but they do understand them.) Using a comma to separate independent clauses creates a "run-on sentence", which is ungrammatical. If you feel a semicolon is misused, you should change it to a period, not a comma.
 * Many of your edits modified links into a deprecated form. Per MCW:Style guide, "Linking to a redirect is preferred over using a piped link" and "If a redirect can be avoided using a suffix on the link, that is preferred. E.g. Using  instead of   is desired." Therefore it should be mobs (suffix), then mobs (plural redirect), then mobs (piped link), in order of preference. Note that using suffixes also works correctly with ItemLinks.
 * The plural of "sheep" is "sheep", and the plural of "squid" is "squid" (with no -s in either case). Plurals for food and meat items are highly irregular. You have to learn them one by one, because the rules are a complicated mix of Old English and Medieval French from when France ruled the south of England.

Some other quasi-grammatical errors I corrected were: – Auldrick (talk &middot; contribs) 19:18, 29 October 2018 (UTC)
 * In the Blocks section, you ended a sentence with an ellipsis ("..."). When a sentence ends with an ellipsis, it still needs a period to end the sentence. (Note, however, that this is considered poor style because it's hard to read.) In this case, the sentence already indicated they were examples, which implies an incomplete list, so the ellipsis was redundant and I removed it.
 * Also in Blocks, you replaced a semicolon with a comma. In this case, that would have been correct because what followed it wasn't an independent clause. Unfortunately, you also changed a gerund ("being") to a finite verb ("include"), which made the second part an independent clause and the sentence as a whole a run-on sentence. Either change by itself would have been correct but together they were ungrammatical.
 * In the Mobs section, you ended the list items with periods. These are not complete sentences, so they should not end with periods. Some of them would have been sentences if the colon were omitted, but even so, list entries are not usually ended with periods unless they are nontrivial and written in the style of an ordinary prose paragraph (like this list). There's some ambiguity here, because you definitely shouldn't use periods in a list of single words or terms, while you definitely should use them in a list of paragraphs, so intermediate and mixed cases might go either way.
 * In the Multiplayer section, you edited "the internet" to "the Internet". I left this change because it is not technically wrong. However, be aware that experts, even those who recommend capitalizing it, acknowledge that the proper noun has become so common as to be evolving into a new meaning of the common noun. Our standard is American English, where it is more common to capitalize it (in contrast to Britain), but the non-capitalized usage is considered only slightly informal, not incorrect, so this only needs to be corrected if it's inconsistent with the rest of the article.