Because many of the uppercase (or capital, or majuscule) Greek letters are indistinguishable from their counterparts in the Latin alphabet, only uses that are specifically interpreted as Greek letters should be listed below. On a Macintosh, the shortcut is command E (followed by command F). When the Search/Replace dialog box is now invoked, the \ phi (for example) will be in the Find dialog box. For example, the Greek letter can be entered in Mathematica with the keystroke sequence p Find -> Use Selection for Find.Many symbols, including notably the greek letters, can be entered by clicking on them in this palette. The Greek alphabet is used extensively in mathematics and the physical sciences to stand for well known constants, variables, functions, and so forth. A starting point for entering specialty symbols is the Special Characters palette, shown below. Peano originally used epsilon in Arithmetices Prinicipia Nova Methodo Exposita (1889), and stated that the symbol was an abbreviation for Latin est (is), apparently using a Greek letter for a Latin word.
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