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Combined display of all available logs of Why start at x, y, z. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).

• 09:36, 15 July 2021 Christian Lawson-Perfect talk contribs moved page The order of factors matters even when they commute to The order of terms matters even when they commute
• 14:30, 14 July 2021 Christian Lawson-Perfect talk contribs created page Template:Please add (Created page with "{{Fix|change=Please add {{{1}}}}}")
• 14:29, 14 July 2021 Christian Lawson-Perfect talk contribs created page Template:Fix (Created page with "<span class="fix {{{classes|}}}" style="white-space:nowrap">{{{change}}}</span>")
• 14:26, 14 July 2021 Christian Lawson-Perfect talk contribs created page MediaWiki:Common.css (Created page with "CSS placed here will be applied to all skins: .fix { color: blue; font-style: italic; }")
• 13:48, 13 July 2021 Christian Lawson-Perfect talk contribs created page Negating a fraction (Created page with "Category:Ambiguities When negating a fraction written on two lines, just putting a minus sign in front is easy to mistake for a long dividing line: \[ - \frac{x^3 + 3x^2...")
• 13:44, 13 July 2021 Christian Lawson-Perfect talk contribs created page Space is significant (Created page with "Category:Ambiguities Empty space is often significant in mathematical notation, but it's easy to misinterpret, and hard to produce accurately. TeX applies different amou...")
• 09:58, 13 July 2021 Christian Lawson-Perfect talk contribs created page Whystartatxyz:Organisation (Created page with "==Of pages== At the moment (2021-07-13), there are a few dozen pages, each belonging to one or two out of a handful of categories. I'm keen to identify common themes, but ho...")
• 15:28, 11 July 2021 Christian Lawson-Perfect talk contribs created page Category:Needs filling in (Created page with "Pages that might have a link or two or a snippet of an idea, but need filling in.")
• 15:22, 11 July 2021 Christian Lawson-Perfect talk contribs created page Or (Created page with "Category:Ambiguities The word "or", when used in mathematics, usually means the the relation \(A \vee B\), with the following truth table: {| class="wikitable" |+ Captio...")
• 13:45, 11 July 2021 Christian Lawson-Perfect talk contribs created page Category:Language (Created page with "This category collects problems to do with mathematical language.")
• 13:42, 11 July 2021 Christian Lawson-Perfect talk contribs created page Category:Handwriting (Created page with "This category collects things that only or mainly come up in handwritten notation.")
• 13:31, 11 July 2021 Christian Lawson-Perfect talk contribs moved page Talk:Mod Notation to Talk:Modular equivalence
• 13:31, 11 July 2021 Christian Lawson-Perfect talk contribs moved page Mod Notation to Modular equivalence
• 14:54, 10 July 2021 Christian Lawson-Perfect talk contribs moved page Lack of brackets in language to Lack of brackets in spoken language
• 14:29, 10 July 2021 Christian Lawson-Perfect talk contribs created page Symbols that look identical in certain contexts (Created page with "Category:Ambiguities Category:Needs filling in Some pairs of symbols look identical when handwritten, or when rendered in certain fonts. ==Examples== * The Latin le...")
• 14:23, 10 July 2021 Christian Lawson-Perfect talk contribs created page File:Three ways of writing x.jpg
• 14:23, 10 July 2021 Christian Lawson-Perfect talk contribs uploaded File:Three ways of writing x.jpg
• 08:32, 8 July 2021 Christian Lawson-Perfect talk contribs created page Juxtaposition means combine in the obvious way (Created page with "In an expression, putting two things immediately next to each other usually means that they should be combined in some way. It's usually implicit that the combination operatio...")
• 08:22, 8 July 2021 Christian Lawson-Perfect talk contribs created page Function application without parentheses (Created page with "Category:Ambiguities It's sometimes OK to write a function name followed by its argument, without any parentheses. Because there's There is no function application symb...")
• 18:31, 7 July 2021 Christian Lawson-Perfect talk contribs created page Intervals (Created page with "Category:Local variations Intervals are often written as a pair of numbers between two brackets, with the brackets determining whether the interval is open or closed at e...")
• 14:43, 6 July 2021 Christian Lawson-Perfect talk contribs created page ! (Created page with "Category:Ambiguities The ! symbol is used to represent the factorial operation. When a factorial appears inside a sentence, it's possible to misinterpret the ! as an exc...")
• 13:50, 6 July 2021 Christian Lawson-Perfect talk contribs created page Handwritten x (Created page with "Category:Local variations The letter x is often written differently in a mathematical context to prose text, in order to distinguish it from the multiplication symbol, \(...")
• 12:56, 6 July 2021 Christian Lawson-Perfect talk contribs created page Symbols for names (Created page with "There are many conventions to do with naming things. This page might split into several when it gets big enough. Mathematicians tend to use single Latin letters to name thing...")
• 04:49, 6 July 2021 Christian Lawson-Perfect talk contribs created page Equality, identity, definition (Created page with "<ref>[https://twitter.com/DavidKButlerUoA/status/1412252548833046541?s=19 Twitter thread]</ref>")
• 09:52, 5 July 2021 Christian Lawson-Perfect talk contribs created page Set notation (Created page with "When defining a set, something is normally put between curly braces. There are a few different conventions for what can go inside: * All the elements of the set, separated by...")
• 14:27, 3 July 2021 Christian Lawson-Perfect talk contribs created page Category:Local variations (Created page with "This category collects conventions in notation that are particular to a place or group of people.")
• 15:04, 2 July 2021 Christian Lawson-Perfect talk contribs created page Quotes (Created page with "<blockquote>Symboles are poor unhandsome (though necessary) scaffolds of demonstration; and ought no more to appear in publique, then the most deformed necessary business whic...")
• 10:25, 2 July 2021 Christian Lawson-Perfect talk contribs created page Times smaller and bigger (Created page with "Category:Ambiguities Category:Language Does "\(x\) is 5 times smaller than \(y\)" mean \(x = y/5\)? Does "\(x\) is one time smaller than \(y\)" make sense? Does "\(...")
• 10:17, 2 July 2021 Christian Lawson-Perfect talk contribs created page There is no function application symbol (Created page with "While \(\circ\) is often used to represent ''composition'' of functions, it doesn't appear that anyone has invented a symbol for ''application'' of functions. Such a symbol c...")
• 10:09, 2 July 2021 Christian Lawson-Perfect talk contribs created page Combinations (Created page with "Is it \(_nC_r\) or \(^nC_r\)?<ref>[https://twitter.com/christianp/status/335024096947617793 Tweet by Christian Lawson-Perfect]</ref>")
• 10:08, 2 July 2021 Christian Lawson-Perfect talk contribs created page What is a fraction (Created page with "<ref>[https://twitter.com/christianp/status/1326847522539769856 Twitter thread by Christian Lawson-Perfect]</ref>")
• 10:06, 2 July 2021 Christian Lawson-Perfect talk contribs created page Chaining operators and relations (Created page with "Category:Inconsistencies <ref>[https://twitter.com/ZenoRogue/status/798923050842324992 Tweet by ZenoRogue]</ref>")
• 10:00, 2 July 2021 Christian Lawson-Perfect talk contribs created page Ways of writing numbers (Created page with "<ref>[https://twitter.com/christianp/status/1240294851641516036 Thread started by Christian Lawson-Perfect: " want as many different conventions for writing numbers as you can...")
• 09:45, 2 July 2021 Christian Lawson-Perfect talk contribs created page Parentheses are overused (Created page with "Category:Conflicting definitions Parentheses are used to represent all sorts of operations and objects, many of which conflict with each other. Greatest common divisor:...")
• 08:56, 2 July 2021 Christian Lawson-Perfect talk contribs created page Something on the right of a radical (Created page with "Category:Ambiguities Category:Handwriting A square root is often shown with a radical symbol: \( \sqrt{x} \). The top line is drawn as wide as it needs to be to cover...")
• 08:51, 2 July 2021 Christian Lawson-Perfect talk contribs created page Long variable names (Created page with "Mathematicians normally stick to single-letter variable names. But when they don't, it can be hard to tell if there's a missing multiplication symbol or not. Some people...")
• 08:35, 2 July 2021 Christian Lawson-Perfect talk contribs created page Category:References (Created page with "This category collects pages that contain references to good places to find material for the wiki.")
• 09:31, 1 July 2021 Christian Lawson-Perfect talk contribs created page Category:Conflicting definitions (Created page with "This category is for definitions of terms or mathematical objects that don't have a single universally recognised meaning.")
• 13:08, 30 June 2021 Christian Lawson-Perfect talk contribs created page File:Xi bar over Xi .jpg
• 13:08, 30 June 2021 Christian Lawson-Perfect talk contribs uploaded File:Xi bar over Xi .jpg
• 10:47, 30 June 2021 Christian Lawson-Perfect talk contribs created page Category:Unpleasantness (Created page with "This category collects conventions that offend someone's sensibilities.")
• 10:40, 30 June 2021 Christian Lawson-Perfect talk contribs created page References (Created page with "[http://www.maths.ed.ac.uk/~aar/papers/cajorinot.pdf A History of Mathematical Notations] by Florian Cajori. Jeff Miller maintains some pages on the earliest known uses of [h...")
• 10:39, 30 June 2021 Christian Lawson-Perfect talk contribs created page Use of different typefaces to convey meaning (Created page with "Category:Unpleasantness Mathematicians love using a different font, or style, to get a semantically different symbol, instead of using diacritics or a different letter en...")
• 10:30, 30 June 2021 Christian Lawson-Perfect talk contribs created page User:Christian Lawson-Perfect (Created page with "I'm the creator of this site! For more about me, see my homepage: [https://somethingorotherwhatever.com/ somethingorotherwhatever.com]")
• 10:21, 30 June 2021 Christian Lawson-Perfect talk contribs created page Powers of trigonometric functions (Created page with "Category:Ambiguities Category:Inconsistencies Category:Unpleasantness When writing a power of a trigonometric function, it's common to write the power as a supers...")
• 10:05, 30 June 2021 Christian Lawson-Perfect talk contribs created page Category:Ambiguities (Created page with "This category collects notations which can be reasonably interpreted in more than one way.")
• 10:03, 30 June 2021 Christian Lawson-Perfect talk contribs created page Category:Inconsistencies (Created page with "This category collects conventions in notation that are inconsistent with each other.")
• 10:01, 30 June 2021 Christian Lawson-Perfect talk contribs created page Unary division (Created page with "[[Category::Inconsistencies]] A minus sign with nothing on the left represents negation of whatever's on the right. Why isn't there a unary division symbol? \[ \div x = \fr...")
• 09:57, 30 June 2021 Christian Lawson-Perfect talk contribs created page Order of operations (Created page with "There are quite a few mnemonics for the order of operations. A common one in the UK is BODMAS: * Brackets * Orders * Division * Multiplication * Addition * Subtraction Elsew...")
• 09:54, 30 June 2021 Christian Lawson-Perfect talk contribs created page Missing multiplication symbol (Created page with "It's common to omit a multiplication symbol: \(ab = a \times b\) But sometimes it's not as clear: \( a(b+1) = a \times (b+1) ? \)")