Results 31 to 40 of about 786,873 (284)
On an algorithm to decide whether a free group is a free factor of another [PDF]
, 2006 We revisit the problem of deciding whether a finitely generated subgroup H is a free factor of a given free group F. Known algorithms solve this problem in time polynomial in the sum of the lengths of the generators of H and exponential in the rank of F.
Silva, Pedro, Weil, Pascal
core +4 more sources
Stretched Exponential Relaxation Arising from a Continuous Sum of Exponential Decays
, 2006 Stretched exponential relaxation of a quantity n versus time t according to n = n_0 exp[-(lambda* t)^beta] is ubiquitous in many research fields, where lambda* is a characteristic relaxation rate and the stretching exponent beta is in the range 0 < beta <
D. C. Johnston, K. Weron
core +1 more source
Exponential distributions of collective flow-event properties in viscous liquid dynamics [PDF]
, 2009 We study the statistics of flow events in the inherent dynamics in supercooled two- and three-dimensional binary Lennard-Jones liquids. Distributions of changes of the collective quantities energy, pressure and shear stress become exponential at low ...
Jeppe C. Dyre +5 more
core +3 more sources
Picturesque exponential sums. II:
Journal für die reine und angewandte Mathematik (Crelles Journal), 1979 Let k be a fixed positive integer ⩾2 and let ζ = exp(2πi/k). For any integer n ⩾0 we define b(n) to be the sum of the digits of n when written to the base k.
Lehmer, D.H., Lehmer, Emma
openaire +1 more source
Resonance between the Representation Function and Exponential Functions over Arithemetic Progression
Journal of Mathematics, 2021 Let rn denote the number of representations of a positive integer n as a sum of two squares, i.e., n=x12+x22, where x1 and x2 are integers. We study the behavior of the exponential sum twisted by rn over the arithmetic progressions ∑n∼Xn≡lmodqrneαnβ ...
Li Ma, Xiaofei Yan
doaj +1 more source
Whittaker Coefficients of Metaplectic Eisenstein Series
, 2015 We study Whittaker coefficients for maximal parabolic Eisenstein series on metaplectic covers of split reductive groups. By the theory of Eisenstein series these coefficients have meromorphic continuation and functional equation.
Brubaker, Benjamin, Friedberg, Solomon
core +1 more source
Quantum Creation of Topological Black Hole [PDF]
, 1999 The constrained instanton method is used to study quantum creation of a vacuum or charged topological black hole. At the $WKB$ level, the relative creation probability is the exponential of a quarter sum of the horizon areas associated with the seed ...
Bañados M. +7 more
core +2 more sources
FEBS Letters, EarlyView.This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva +5 more
wiley +1 more source
Ciência Rural: This study analyzed the performance of five depreciation methods (straight-line, exponential depreciation method, sum-of-the-years’-digits, inverse sum-of-the-years’-digits, and sinking fund) applied to three models of agricultural tractors over a ten ...
Gustavo Freitas Bastos Silva +5 more
doaj +1 more source