Author

Nikolai Nikolov

2 papers indexed here

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Sep 2026

Association Between Coronary Artery Anomalies, Obstructive Coronary Disease, and Procedural Complexity During Coronary Angiography.

BACKGROUND The clinical and procedural implications of coronary artery anomalies (CAAs) remain incompletely defined. AIMS To evaluate the association between anomalous coronary anatomy, obstructive coronary artery disease (CAD), and procedural complexity during coronary angiography and percutaneous coronary intervent...

R. Grigorov, S. Yambolov, I. Borisov et al. · Catheterization and cardiova... · 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