Stigma (letter) sigma form ς never occurs inside a word and is never used as a numeral either. Uppercase forms of stigma as a numeral (Ϛ) are rare in practice; when they occur, they can often be confused with uppercase forms of another numeral symbol, koppa (Ϟϟ), which stands for 90. Stigma is encoded in Unicode as "Greek letter stigma" U+03DA (Ϛ) and "Greek small letter stigma" U+03DB (ϛ). Stigma (letter) Stigma (ϛ) is a ligature of the Greek letters sigma (Σ) and tau (Τ), which was used in writing Greek between the Middle Ages and the 19th century. It is also
Greek letter society effect on youth identity Greek letter societies. Students who are involved in these organizations have more support and are able to gain resources more easily, broadening their intellectual and social education. But, like in American Greek life, involvement also creates opportunity for over-exertion and detrimental involvement in activities such as binge-drinking and bar presence. Both negative and positive forms of involvement have large influences on a youth's changing identity in college. Many American chartered Greek letter organizations, such as Kappa Alpha Theta, have international chapters in Canada. Greek letter society effect on youth identity Greek letter society effect on youth identity happens at a