Atahan Ahaznedar enhanced the Polyhedral Geometry capabilities in the oscar-system/Oscar.jl repository by extending the Normal Cone API. He implemented support for multiple vertex indices within the normal_cone function and introduced an option to compute either outer or inner normal cones, addressing the need for greater flexibility in polyhedral geometry calculations. This work, developed in Julia and grounded in algorithm design and mathematics, enables more robust and accurate downstream algorithms. Collaborating with other contributors, Atahan delivered a user-facing feature that deepens the API’s utility and lays a foundation for future geometry tooling, reflecting thoughtful engineering and domain-specific problem solving.