NG SAY TIONGMATHEMATICS2010-04-082010-04-082004-11-01NG SAY TIONG (2004-11-01). Elliptic functions, theta functions and identities. ScholarBank@NUS Repository.https://scholarbank.nus.edu.sg/handle/10635/14317In this thesis, we will first discuss the properties of elliptic functions and certain theta functions. We then derive new proofsfor the quintuple product identity, the septuple identity and the Winquist identity, using theta functions and elliptic functions.Finally, we derive new proof for a certain cubic theta-functions identity.enelliptic functions, theta functions, identitiesThesisNOT_IN_WOS