Unicode

Unicode symbols

Frequently used symbols:

Symbol	Unicode (hex)	Unicode (dec)	Keymap (linux be)	HTML entity	Unicode name	LaTeX
←	0x2190	8592	← ^AltGr-Y	← ←	Leftwards Arrow	\leftarrow \gets
↑	0x2191	8593	↑ ^AltGr-Shift-U	↑ ↑	Upwards Arrow	\uparrow
→	0x2192	8594	→ ^AltGr-I	→ →	Rightwards Arrow	\rightarrow \to
↓	0x2193	8595	↓ ^AltGr-U	↓ ↓	Downwards Arrow	\downarrow
⃖	0x20D6	8406			Combining Left Arrow Above
⃗	0x20D7	8407			Combining Right Arrow Above
̅	0x0305	773			Combining Overline
̲	0x0332	818			Combining Low Line
∈	0x2208	8712			Element Of	\in
∉	0x2209	8713			Not An Element Of	\notin
∊	0x220A	8714			Small Element Of	\smallin
·	0x00B7	183			Middle Dot	\cdotp \centerdot

(LaTeX symbol name from package unicode-math)

How to find Unicode symbols:

• shapecatcher.com - unicode character recognition — draw the symbol with the mouse to find it!
• In Gnome, see character maps (gucharmap) to get unicode hex code.
• In KDE, try KDE Character Selector (KCharSelect).
• In Windows, try Character Map. Use Search for field to search characters with matching description (click Advanced view)

Using Combining symbols:

• In Windows, try Character Map. Use Search for with Combining to find all combining symbols.
• TBC

Reference:

• unicode-math package (see unimath-symbols.pdf, also in LaTeX documentation)
• Mathematical operators and symbols in Unicode (on wikipedia) (with explanation links for lots of symbols!)

Tips

Inserting Unicode symbols in Linux

These are similar to Windows' Alt-key code.

• Ctrl-Shift-u, followed by unicode hexadecimal code while maintaining Ctrl-Shift (see [1])

Ex Ctrl-Shift-ue7 for ç, Ctrl-Shift-ue8 for è, Ctrl-Shift-ue9 for é...

• In Gnome, see character maps (gucharmap) to get unicode hex coce.
• In KDE, try KDE Character Selector (KCharSelect).

Inserting Unicode symbols in Windows

• Alt-KP0-Alt-KP9 — Press Alt key then the unicode character code in decimal.
• 4-digit hex code, then Alt-X — Type unicode character code in hexadecimal, then press Alt-X (at least in Office applications)