Elliptic curves (characterize them, algebraic structure,
analytic properties,etc.)
- Source: Koblitz: Introduction to Elliptic Curves and Modular Forms
Blowing-up (plane curve) singularities
- Source: Harris: A First Course in Algebraic Geometry
Newton polygons and Puiseux expansions
- Source: Brieskorn, Knorrer: Plane Algebraic Curves
Genus of a curve, or other topological properties
- Source: Miranda, Algebraic Curves and Riemann Surfaces
Kinematics problem for robotics
- Source: Cox, Little, O'Shea: Ideals, Varieties, and Algorithms
Automatic geometric theorem proving
- Source: Cox, Little, O'Shea: Ideals, Varieties, and Algorithms
Improvements to Buchberger's algorithm, other algorithmic methods
- Source: Cox, Little, O'Shea: Ideals, Varieties, and Algorithms;
Greuel, Pfister, Bachmann: A Singular Introduction to Commutative Algebra
Investigate a distinguished curve
These are just a few ideas, with some introductory sources.
Your talk should be somehow related to algebraic geometry
(and hopefully plane curves),
but beyond this, you can research almost anything.
You can also see what past seminars have done,
along with abstracts,