Modular units and singular moduli

introduction

• modular units
• SL(2,Z) invariant spaces spanned by modular units
  
  • http://arxiv.org/abs/q-alg/9704004v2
• examples of SL(2,Z) invariant spaces spanned by modular units http://w3.countnumber.de/addons/Publikationen/text/mex.pdf

 

related items

• infinite products and CFT