digamma

柯林斯英漢雙解大詞典

digamma /daɪˈɡæmə/

1.N a letter of the Greek alphabet (Ϝ) that became obsolete before the classical period of the language. It represented a semivowel like English W and was used as a numeral in later stages of written Greek, and passed into the Roman alphabet as F 古希臘字母 (Ϝ) ^[1] 

digamma function 雙函數 ; 雙伽瑪函數

w digamma 蠝

digamma-function 雙Γ函數

q-digamma function q雙r函數

q digamma function q雙γ函數

Euler digamma function 莫比烏斯函數

Gauss's digamma theorem 雙伽瑪函數 ^[1]