Erlang Surya

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20222025

most citedCounting Deranged Matchings

1 citations · 1 across the 2 of their papers we have counts for

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4 papers · 1 filter

math.CO2025

Distance Exceptional Graphs and the Curvature Index

Sawyer Jack Robertson, Finn Southerland, Erlang Surya

A graph $G = (V, E)$ on $n$ vertices is said to be \emph{distance exceptional} if the equation $D x = 1$ admits no solution $x \in R^{n}$ , where $D\in\mathbb{R…

math.CO2023

Lagrange Inversion Formula by Induction

Erlang Surya, Lutz Warnke

We present a simple inductive proof of the Lagrange Inversion Formula.

math.CO2023

Isomorphisms between dense random graphs

Erlang Surya, Lutz Warnke, Emily Zhu

We consider two variants of the induced subgraph isomorphism problem for two independent binomial random graphs with constant edge-probabilities p_1,p_2. In particular, (i) we prov…

math.CO2022★ 1 cited

Counting Deranged Matchings

Sam Spiro, Erlang Surya

Let $pm (G)$ denote the number of perfect matchings of a graph $G$ , and let $K_{r \times 2 n / r}$ denote the complete $r$ -partite graph where each part has size $2 n / r$ . Johnso…