U+2148 Double-Struck Italic Small I
U+2148 wurde in Version 3.2 in 2002 zu Unicode hinzugefügt. Er gehört zum Block
Dieses Zeichen ist ein Lowercase Letter und wird allgemein verwendet, das heißt, in keiner speziellen Schrift.
Das Zeichen ist eine Schriftart Variante des Zeichens
Die Wikipedia hat die folgende Information zu diesem Codepunkt:
The imaginary unit or unit imaginary number (i) is a solution to the quadratic equation x2 + 1 = 0. Although there is no real number with this property, i can be used to extend the real numbers to what are called complex numbers, using addition and multiplication. A simple example of the use of i in a complex number is 2 + 3i.
Imaginary numbers are an important mathematical concept; they extend the real number system to the complex number system in which at least one root for every nonconstant polynomial exists (see Algebraic closure and Fundamental theorem of algebra). Here, the term "imaginary" is used because there is no real number having a negative square.
There are two complex square roots of −1: i and −i, just as there are two complex square roots of every real number other than zero (which has one double square root).
In contexts in which use of the letter i is ambiguous or problematic, the letter j is sometimes used instead. For example, in electrical engineering and control systems engineering, the imaginary unit is normally denoted by j instead of i, because i is commonly used to denote electric current.
Darstellungen
System | Darstellung |
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Nr. | 8520 |
UTF-8 | E2 85 88 |
UTF-16 | 21 48 |
UTF-32 | 00 00 21 48 |
URL-kodiert | %E2%85%88 |
HTML hex reference | ⅈ |
Falsches windows-1252-Mojibake | â…ˆ |
HTML named entity | ⅈ |
HTML named entity | ⅈ |
Kodierung: GB18030 (Hex-Bytes) | 81 36 C2 32 |
Verwandte Schriftzeichen
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Vollständiger Eintrag
Eigenschaft | Wert |
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3.2 (2002) | |
DOUBLE-STRUCK ITALIC SMALL I | |
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Letterlike Symbols | |
Lowercase Letter | |
Common | |
Left To Right | |
Not Reordered | |
Schriftart | |
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✔ | |
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Egal | |
✔ | |
✘ | |
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✔ | |
✘ | |
✘ | |
0 | |
0 | |
0 | |
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None | |
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NA | |
Other | |
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✘ | |
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✔ | |
✘ | |
Ja | |
Ja | |
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Nein | |
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Nein | |
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✘ | |
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Klein | |
✔ | |
✘ | |
✘ | |
✘ | |
✘ | |
Alphabetic Letter | |
✘ | |
✔ | |
✔ | |
✘ | |
✘ | |
✘ | |
✘ | |
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None | |
neutral | |
Nicht anwendbar | |
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No_Joining_Group | |
Non Joining | |
Alphabetic | |
none | |
keine Nummer | |
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U |