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Left-invariant hypercontact structures on three-dimensional Lie groups
Springer Science and Business Media LLC - Tập 69 - Trang 97-108 - 2014
Giovanni Calvaruso, Antonella Perrone
We characterize three-dimensional manifolds admitting an almost contact metric 3-structure and completely classify left-invariant hypercontact structures on three-dimensional Lie groups.
Finsler vector bundles -- Metrizable connections
Springer Science and Business Media LLC - Tập 48 - Trang 83-91 - 2004
Mihai Anastasiei
On the distribution of large prime divisors
Springer Science and Business Media LLC - Tập 2 - Trang 283-289 - 1972
P. Billingsley
Beatty sequences and prime numbers with restrictions on strongly q-additive functions
Springer Science and Business Media LLC - Tập 72 - Trang 139-150 - 2016
Mohamed Mkaouar
We estimate exponential sums over a non-homogenous Beatty sequence with restriction on strongly q-additive functions. We then apply our result in a few special cases to obtain an asymptotic formula for the number of primes $$p=\lfloor \alpha n +\beta \rfloor $$ and $$f(p)\equiv a (\mathrm{mod\,}b)$$ , with $$n\ge N $$ , where $$\alpha $$ , $$\beta $$ are real numbers and f is a strongly q-additive... hiện toàn bộ
Properties of P-coherent and Baer modules
Springer Science and Business Media LLC - Tập 60 Số 2 - Trang 97-114 - 2010
Lixin Mao
Congruences, equational theories and lattice representations
Springer Science and Business Media LLC - Tập 32 - Trang 65-75 - 1996
William A. Lampe
We survey results concerning the representations of lattices as lattices of congruences and as lattices of equational theories. Recent results and open problems will be mentioned.
Upper bounds for edge-antipodal and subequilateral polytopes
Springer Science and Business Media LLC - Tập 54 - Trang 99-106 - 2007
Konrad J. Swanepoel
A polytope in a finite-dimensional normed space is subequilateral if the length in the norm of each of its edges equals its diameter. Subequilateral polytopes occur in the study of two unrelated subjects: surface energy minimizing cones and edge-antipodal polytopes. We show that the number of vertices of a subequilateral polytope in any d-dimensional normed space is bounded above by (d / 2 + 1) d ... hiện toàn bộ
Structure theorems for Ambrose algebras
Springer Science and Business Media LLC - Tập 31 - Trang 139-154 - 1995
Marina Haralampidou
We deal with structure theory of Ambrose algebras, getting structure theorems, analogous to the classical ones of Wedderburn.
Does “Δ 2 d 2-n = 0 on a Riemannian manifold” imply flatness?
Springer Science and Business Media LLC - Tập 17 - Trang 109-117 - 1986
R. Caddeo, L. Vanhecke
A polynomial variant of diophantine triples in linear recurrences
Springer Science and Business Media LLC - Tập 86 - Trang 289-299 - 2022
Clemens Fuchs, Sebastian Heintze
Let $$ (G_n)_{n=0}^{\infty } $$ be a polynomial power sum, i.e. a simple linear recurrence sequence of complex polynomials with power sum representation $$ G_n = f_1\alpha _1^n + \cdots + f_k\alpha _k^n $$ and polynomial characteristic roots $$ \alpha _1,\ldots ,\alpha _k $$ . For a fixed polynomial p, we consider sets $$ \left\{ a,b,c \right\} $$ consisting of three non-zero polynomials such that... hiện toàn bộ
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