3 papers
math.CA2026
High-level convexity for products of squared Euclidean distance functions
Tudor Micu, Cornel Pintea, George C. Ţurcaş
We study smooth functions on Euclidean space whose Hessian is positive definite outside a bounded set, with emphasis on products of squared distance functions. More precisely, we f…
math.NT2025
Support-sensitive bounds for shortest zero-sum subsequences
Claudiu Pop, George C. Ţurcaş
For a sequence over a finite abelian group, let denote the length of the shortest nonempty zero-sum subsequence of . We prove that if is finite abelian of order…
math.NT2023
On the -isogenies of elliptic curves with multiplicative reduction over quadratic fields
George C. Ţurcaş
Let be a prime and a quadratic number field. In this article we extend a previous result of Najman and the author and prove that if is an elliptic curve with pote…