Czech.Math.J. 2018
DOI: 10.21136/cmj.2018.0134-17
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Recognition of characteristically simple group $A_5\times A_5$ by character degree graph and order

Abstract: It is shown that finite symmetric groups S n are determined by their complex group algebra, i.e. if G is a finite group with CG ∼ = CS n then it follows that G ∼ = S n .

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“…is uniquely determined by its complex group algebra, where p ≥ 5 is a prime number (see [19]). In [20], Khosravi and Khademi proved that the characteristically simple group A 5 × A 5 is uniquely determined by its order and its character degree graph (vertices are the prime divisors of the irreducible character degrees of G and two vertices p and q are joined by an edge if pq divides some irreducible character degree of G). In this paper, we prove that if M is a simple K 3 -group, then M × M is uniquely determined by its order and some information about its irreducible character degrees.…”
Section: Introductionmentioning
confidence: 99%
“…is uniquely determined by its complex group algebra, where p ≥ 5 is a prime number (see [19]). In [20], Khosravi and Khademi proved that the characteristically simple group A 5 × A 5 is uniquely determined by its order and its character degree graph (vertices are the prime divisors of the irreducible character degrees of G and two vertices p and q are joined by an edge if pq divides some irreducible character degree of G). In this paper, we prove that if M is a simple K 3 -group, then M × M is uniquely determined by its order and some information about its irreducible character degrees.…”
Section: Introductionmentioning
confidence: 99%