How to Type the Sigma Symbol on Mac. Step #1. Symbol . It should change the letter to a greek "mu". The symbol’s code: You can insert symbols by typing the symbol’s code and then pressing the Alt+X key combination.For example, the code for the sigma character is 2211: Type 2211 in your document and then press Alt+X. The sigma symbol provides the character used to denote the sum of an equation in mathematics. Cmd+C to copy the selection) and shortcuts using sequences (ex. (Physics, scattering) Cross_section_(physics). A shielding constant. The number 2211 is magically transformed into the sigma character. Amaya defines two kinds of keyboard shortcuts for Mac OS X: shortcuts using standard Apple modifier keys (ex. The help on inserting Greek letters and special symbols is also available in Help menu. Mac OS has a rather useful built-in utility called the Keyboard Viewer – an onscreen keyboard that displays many of the possible symbols. 2. (linguistics, phonology) Syllable. Sigma Symbol in Greek Alphabet. Open System Preferences-> Keyboard. (mathematics) Sum of divisors. Σ on Wikipedia. There’s a very easy way to type a Greek alphabet letter such as the Sigma on a Mac. (mathematics) Braid group algebra. How to Type Special Characters and Symbols on iPhone or iPad. When you are typing in Messages, Notes, Mail etc, touch and hold on the letter, number, or symbol, which has these character(s). I would recommend that this solution be avoided, since modern computers normally use Unicode for greek and not the old legacy symbol encoding. The Stefan–Boltzmann constant. Ctrl-t Ctrl-t to create a table). As Mac OS X users are not familiar with shortcut sequences in menu entries, only standard shortcuts are shown by default. The Greek letter sigma was derived from the Phoenician letter šīn, meaning tooth. You can create a sigma sign by accessing the Character Palette, using a keyboard shortcut or by using the Special Characters menu in your current application. Then select AutoCorrect. The alternative form of sigma (ς) must be used in word-final position. Option-m should work, but you can also type the letter "m" in a font like Times, then select the letter you just typed and select the Symbol font. (mathematics): Though there exists a distinct symbol for the purpose of the mathematical summation, the upper case sigma here is often used for convenience. If you’re using a Mac computer, you’re in luck. Coordinate terms (classification of formulae): Π, Δ; See also . The symbol (σ) indicating the addition of the numbers or quantities indicated. At the end of this post, I have also listed special characters and symbols which are currently supported. I found it’s an easy solution on Word for Mac and hope it’s the same for previous versions: select Word from the menu and go to Preferences. The easiest way it to insert the the alpha symbol (Or any of hundreds of special characters and symbols.) Typing Greek letters with Keyboard Shortcuts To insert Greek letter type Ctrl+G ( Command G on Mac OS ) and then type Latin letter mentioned in the table below. Sigma (uppercase Σ, lowercase σ) is the 18th letter of the Modern Greek alphabet. (spatial databases) The select operation. sigma factor A protein component of RNA polymerase that determines the specific site on DNA where transcription begins. Wikipedia is to find it among the available special symbols. To Activate the Keyboard Viewer: 1. In Gematria it has the value of 200. Besides the symbols mentioned above, dozens more can be typed using a regular Apple keyboard. σ (mathematics, statistics) Standard deviation. Click the radio button for “use Math AutoCorrect rules outside of math regions.” There is a list of about 100 math symbols that will be replaced automatically.