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Author

Dragomir Grozev

2 papers indexed here

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Preprint Sep 2026

Weighted Generalizations of Zagier's Phenomenon

We study sums associated with the action of $PGL_2(\mathbb Z)$ on continuous piecewise polynomial functions with exactly two real roots, both irrational. We form weighted sums of the positive parts of their normalized transforms, using nonnegative weights compatible with translation, reflection, and inversion. Under su...

Dragomir Grozev, Navid Safaei · 0 citations
Preprint Aug 2026

A Note on the Converse Sendov Problem

For a polynomial of degree $n$ whose zeros lie in the closed unit disk, we determine the largest possible distance from a prescribed critical point of modulus $r$ to the nearest zero. If $n$ is even, the sharp radius is $\sqrt{1-r^2}$; if $n$ is odd, the sharp radius is strictly smaller for $r\in(0,1)$ and depends on $...

Dragomir Grozev, Nikolai Nikolov · 0 citations

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