Displaying similar documents to “Evaluation of the sums ∑ m = 1 m ≡ a ( mod 4 ) n - 1 σ ( m ) σ ( n - m ) ”

Tribonacci modulo 2 t and 11 t

Jiří Klaška (2008)

Mathematica Bohemica

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Our previous research was devoted to the problem of determining the primitive periods of the sequences ( G n mod p t ) n = 1 ∞ where ( G n ) n = 1 ∞ is a Tribonacci sequence defined by an arbitrary triple of integers. The solution to this problem was found for the case of powers of an arbitrary prime p ≠ 2 , 11 . In this paper, which could be seen as a completion of our preceding investigation, we find solution for the case of singular primes p = 2 , 11 .

A new efficient presentation for P S L ( 2 , 5 ) and the structure of the groups G ( 3 , m , n )

Bilal Vatansever, David M. Gill, Nuran Eren (2000)

Czechoslovak Mathematical Journal

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G ( 3 , m , n ) is the group presented by 〈 a , b ∣ a 5 = ( a b ) 2 = b m + 3 a - n b m a - n = 1 〉 . In this paper, we study the structure of G ( 3 , m , n ) . We also give a new efficient presentation for the Projective Special Linear group P S L ( 2 , 5 ) and in particular we prove that P S L ( 2 , 5 ) is isomorphic to G ( 3 , m , n ) under certain conditions.

Tribonacci modulo p t

Jiří Klaška (2008)

Mathematica Bohemica

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Our research was inspired by the relations between the primitive periods of sequences obtained by reducing Tribonacci sequence by a given prime modulus p and by its powers p t , which were deduced by M. E. Waddill. In this paper we derive similar results for the case of a Tribonacci sequence that starts with an arbitrary triple of integers.