Speaker: Pho Duc Tai Title: On geometry of Edwards curves Abstract: In this talk we give the classification of the normal forms (in term of Newton polygon) of curves with genus no more than 2. In particular, we will study the elliptic curves of degree 4, construct the group operation from geometric viewpoints. Finally, we will give some applications of a special case, namely the Edwards curve. This is the joint work with Trieu Thu Ha.