zbMATH — the first resource for mathematics

Geometry Search for the term Geometry in any field. Queries are case-independent.
Funct* Wildcard queries are specified by * (e.g. functions, functorial, etc.). Otherwise the search is exact.
"Topological group" Phrases (multi-words) should be set in "straight quotation marks".
au: Bourbaki & ti: Algebra Search for author and title. The and-operator & is default and can be omitted.
Chebyshev | Tschebyscheff The or-operator | allows to search for Chebyshev or Tschebyscheff.
"Quasi* map*" py: 1989 The resulting documents have publication year 1989.
so: Eur* J* Mat* Soc* cc: 14 Search for publications in a particular source with a Mathematics Subject Classification code (cc) in 14.
"Partial diff* eq*" ! elliptic The not-operator ! eliminates all results containing the word elliptic.
dt: b & au: Hilbert The document type is set to books; alternatively: j for journal articles, a for book articles.
py: 2000-2015 cc: (94A | 11T) Number ranges are accepted. Terms can be grouped within (parentheses).
la: chinese Find documents in a given language. ISO 639-1 language codes can also be used.

a & b logic and
a | b logic or
!ab logic not
abc* right wildcard
"ab c" phrase
(ab c) parentheses
any anywhere an internal document identifier
au author, editor ai internal author identifier
ti title la language
so source ab review, abstract
py publication year rv reviewer
cc MSC code ut uncontrolled term
dt document type (j: journal article; b: book; a: book article)
Fibonacci length of direct products of groups. (English) Zbl 1123.20029
Summary: For a non-Abelian finite group G=a 1 ,a 2 ,,a n the Fibonacci length of G with respect to the ordered generating set A={a 1 ,a 2 ,,a n } is the least integer l such that for the sequence of elements x i =a i , 1in, x n+i = j=1 n x i+j-1 , i1, of G, the equations x l+i =a i , 1in hold. The question posed in 2003 by P. P. Campbell is “Is there any relationship between the lengths of finite groups G, H and G×H?” In this paper we answer this question when at least one of the groups is a non-Abelian 2-generated group.
20F05Generators, relations, and presentations of groups
20D60Arithmetic and combinatorial problems on finite groups
11B39Fibonacci and Lucas numbers, etc.
20D40Products of subgroups of finite groups