The ∩ symbol is chiefly used in set theory to show the intersection of two sets. The intersection of two sets contains all elements that are present in both sets. If an element belongs to both Set A and Set B, then it will belong to the intersection of A and B.

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Bear in mind that this is a UTF-8 encoded character. It must be encoded as UTF-8 at all stages (copying, replacing, editing, pasting), otherwise it will render as random characters or the dreaded �. (Method 2) Use the "Alt Code." If you have a keyboard with a numeric pad, you can use this method. Simply hold down the Alt key and type 8745. When you lift the Alt key, the symbol appears. ("Num Lock" must be on.) (Method 3) Use the HTML Decimal Code (for webpages). HTML TextOutput My symbol: ∩My symbol: ∩ (Method 4) Use the HTML Entity Code (for webpages). HTML TextOutput My symbol: ∩My symbol: ∩ (Method 5) Use the CSS Code (for webpages). CSS and HTML TextOutput My symbol: My symbol: ∩ (Method 6) Use the HTML Hex Code (for webpages and HTML canvas). HTML TextOutput My symbol: ∩My symbol: ∩ On the assumption that you already have your canvas and the context set up, use the Hex code in the format 0x2229 to place the ∩ symbol on your canvas. For example: JavaScript Text const x = "0x"+"E9" ctx.fillText(String.fromCodePoint(x), 5, 5); Output ∩ (Method 7) Use the Unicode (for various, e.g. Microsoft Office, JavaScript, Perl). The Unicode for ∩ is U+2229. The important part is the hexadecimal number after the U+, which is used in various formats. For example, in Microsoft Office applications (e.g. Word, PowerPoint), do the following: TypeOutput 2229[Hold down Alt][Press x]∩(The 2229 turns into ∩. Note that you can omit any leading zeros.) In JavaScript, the syntax is \uXXXX. So, our example would be \u2229. (Note that the format is 4 hexadecimal characters.) JavaScript TextOutput let str = "\u2229"document.write("My symbol: " + str)My symbol: ∩ You might also like... A-Z glossary of mathematical symbolsA-Z glossary of mathematical terms Help Us Improve Mathematics Monster Do you disagree with something on this page? Did you spot a typo? Please tell us using this form. Find Us Quicker! When using a search engine (e.g., Google, Bing), you will find Mathematics Monster quicker if you add #mm to your search term. Learn more... Share This Page If you like Mathematics Monster (or this page in particular), please link to it or share it with others.If you do, please tell us. It helps us a lot! sharecopy Create a QR Code Use our handy widget to create a QR code for this page...or any page. Create a QR code

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In summary, the ∩ symbol provides a succinct way to represent the common elements between two sets. A thorough understanding of its usage is paramount for anyone delving into set theory and its applications in various mathematical domains.

In the rich tapestry of mathematical symbols, the ∩ or "Intersection" symbol occupies a foundational position, especially within set theory. This short lesson covers its significance, primary applications, and provide a couple of illustrative examples for clarity.

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