Programming languages and Excel use the asterisk (*) for multiplication. In Unicode, the symbol for multiplication is U+00D7. Use non-breaking spaces around the multiplication symbol. The multiplication symbol is understood more easily. Use the multiplication symbol in general content, not the dot operator. This is done to avoid confusion in expressions that contain both the multiplication symbol ‘×’ and a letter ‘x’ used as a variable. The ‘dot operator’ (Unicode U+22C5) is sometimes used to show multiplication in mathematical expressions – for example ‘x ⋅ y ’. Use the mathematical symbol for the multiplication (×). The letters in the examples are called ‘variables’.You can also use a thin space, but it will break across lines. But consider adding a narrow no-break space around the division slash to make the expression clearer. This is a style convention in mathematics. However, division slashes might appear in expressions you have to reproduce in your content – for example, in algebraic fractions. In Unicode, the symbol for division is U+00F7 and the division slash is U+2215. The division slash is easily confused with the forward slash which is also used to show alternatives. In most cases, it's best to use the division symbol (÷). Programming languages and Excel use the forward slash (/) for division. Use non-breaking spaces around the division symbol. People sometimes use the forward slash (/) to show division as well. Use the division symbol (÷) or the division slash ( ∕ ). Here, the plus symbol is not working as an operator, it is modifying the number.ġ2−4 To show a positive value, write the number after the plus symbol without a space. To show addition, use non-breaking spaces around the plus symbol. You can also use Word’s Insert>Symbol command or Unicode. Use the plus symbol (+) on your keyboard it is coded correctly. WCAG quick reference: 1.3.1 Info and relationships – level A Addition and positive numbers Our aim is to help government writers of general content create accessible mathematical content using the codes in the table: Codes for Mathematical Symbols. Agencies working with a lot of mathematical and scientific content will likely use these tools. Note on coding: the Style Manual does not use MathML or LaTeX for this page. Don’t use images of symbols or superscript. These tools make mathematical equations and symbols accessible, including for screen readers.Įnsure both symbols and superscript can be enlarged without loss of content or functionality. Insert symbols and superscript with tools such as: Unless they are coded correctly, symbols and superscript may be inaccessible for some people who: Superscript is a number, letter or symbol placed above a character, for example, the ‘2’ in ‘ x 2’. Mathematical expressions in technical content often contain symbols and superscript. You will find other codes, such as HTML entities, in the table, ‘ Codes for mathematical symbols’. Use code for symbols, not punctuationĪlways use the correct code for mathematical symbols, including: If so, use the following guidance to write and space mathematical symbols correctly. These are more likely to appear in technical content, but user research might show it is appropriate to reproduce them in general content. Only use mathematical symbols in general content if user research shows they are appropriate for your users and for the type of content.Ĭomplicated mathematical relationships are difficult to express in words and are best written using symbols. Use symbols when user research supports their use We can prove that zero does not equal one.
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