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S. Pupyrev

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Preprint Aug 2026

A Gap in the 42-Queue Layout Algorithm for Planar Graphs

A queue layout of a graph consists of a linear order of the vertices and a partition of the edges into queues so that no two edges in a single queue are nested. The minimum number of queues needed in a queue layout of a graph is called its queue number. The planar product structure theorem states that every planar grap...

S. Pupyrev · 0 citations
Preprint Sep 2026

Smallest Cubic Non-1-Planar Graphs

A graph is 1-planar if it has a drawing in which every edge is crossed at most once. We show that the smallest cubic non-1-planar graphs have $30$ vertices. Two such graphs are the Tutte-Coxeter graph of girth eight and a graph of girth seven that we call the Byte graph. Every subcubic graph with fewer than $30$ vertic...

S. Pupyrev · 0 citations
Jul 2026

How to Draw a Planar Graph: An Experimental Evaluation

The study compares established algorithms from the graph drawing literature, practical force-directed and pressure-based heuristics, and new optimization-based methods that directly improve visual properties such as edge-length uniformity, face-area balance, and angular resolution to show that no evaluated algorithm is...

S. Pupyrev · 0 citations

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