A theorem on the congruences [1/2(p-l)]! = ±1(mod p)

Velupillai, M.2010-07-062010-07-061981Journal of the National Science Council of Sri Lanka, 9(1):p.77https://dl.nsf.gov.lk/handle/1/6403Abstract available from Library, Please quote title when requestingNumber theoryMathematicsA theorem on the congruences [1/2(p-l)]! = ±1(mod p)Article