F. Jafari

activity

20172026

most citedZero divisor and unit elements with support of size 4 in group algebras of torsion free groups

1 citations · 2 across the 6 of their papers we have counts for

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3 papers · 1 filter

math.CO2026

Regular sets of circulant quartic graphs

A. Abdollahi, J. Bagherian, F. Jafari +3

For a graph $Γ = (V, E)$ and nonnegative integers $a$ and $b$ , a nonempty proper subset $C \subset V$ is called an $(a, b)$ -regular set if every vertex in $C$ has exactly $a$ neighbors…

math.CO2023

New Upper Bounds on the Size of Permutation Codes under Kendall $τ$ -Metric

Alireza Abdollahi, Javad Bagherian, Fatemeh Jafari +3

We first give two methods based on the representation theory of symmetric groups to study the largest size $P (n, d)$ of permutation codes of length $n$ i.e. subsets of the set $S_{n}$ …

math.CO2022

New Bounds on the Size of Permutation Codes With Minimum Kendall $τ$ -distance of Three

A. Abdollahi, J. Bagherian, F. Jafari +3

We study $P (n, 3)$ , the size of the largest subset of the set of all permutations $S_{n}$ with minimum Kendall $τ$ -distance $3$ . Using a combination of group theory and integer progra…

Regular sets of circulant quartic graphs

New Upper Bounds on the Size of Permutation Codes under Kendall τ-Metric

New Bounds on the Size of Permutation Codes With Minimum Kendall τ-distance of Three

New Upper Bounds on the Size of Permutation Codes under Kendall $τ$ -Metric

New Bounds on the Size of Permutation Codes With Minimum Kendall $τ$ -distance of Three