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In contrast, a character entity reference refers to a character by the name of an entity which has the desired character as its replacement text. The entity must either be predefined (built into the markup language) or explicitly declared in a Document Type Definition (DTD). The format is the same as for any entity reference: &name;
The second is a link to the article that details that symbol, using its Unicode standard name or common alias. (Holding the mouse pointer on the hyperlink will pop up a summary of the symbol's function.); The third gives symbols listed elsewhere in the table that are similar to it in meaning or appearance, or that may be confused with it;
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Radical 61 or radical heart (心部) meaning 'heart' or 'heart/mind' is one of 34 of the 214 Kangxi radicals that are composed of 4 strokes. When appearing at the left side of a Chinese character, the radical transforms into 忄, which consists of three strokes. When appearing at the bottom, it sometimes transforms into ⺗.
The asterisk (/ ˈ æ s t ər ɪ s k / *), from Late Latin asteriscus, from Ancient Greek ἀστερίσκος, asteriskos, "little star", [1] [2] is a typographical symbol. It is so called because it resembles a conventional image of a heraldic star.
For most symbols, the entry name is the corresponding Unicode symbol. So, for searching the entry of a symbol, it suffices to type or copy the Unicode symbol into the search textbox. Similarly, when possible, the entry name of a symbol is also an anchor, which allows linking easily from another Wikipedia article. When an entry name contains ...
Etymology (/ ˌ ɛ t ɪ ˈ m ɒ l ə dʒ i /, ET-im-OL-ə-jee [1]) is the study of the origin and evolution of words, including their constituent units of sound and meaning, across time. [2] In the 21st century a subfield within linguistics, etymology has become a more rigorously scientific study. [1]
The following table lists many specialized symbols commonly used in modern mathematics, ordered by their introduction date. The table can also be ordered alphabetically by clicking on the relevant header title.