Results 101 to 110 of about 652 (179)

Minkowski space-time and hyperbolic geometry

open access: yes
It has become generally recognized that hyperbolic (i.e. Lobachevskian) space can be represented upon one sheet of a two-sheeted cylindrical hyperboloid in Minkowski space-time.
Barrett, John
core  

A Bootstrap Invariance Principle for Highly Nonstationary Long Memory Processes [PDF]

open access: yes
This paper presents an invariance principle for highly nonstationary long memory processes, defined as processes with long memory parameter lying in (1, 1.5).
George Kapetanios
core  

Foundation of paralogical nonstandard analysis and its application to some famous problems of trigonometrical and orthogonal series. Part II. [PDF]

open access: yes
Carleson’s celebrated theorem of 1965 [1] asserts the pointwise convergence of the partial Fourier sums of square integrable functions. The Fourier transform has a formulation on each of the Euclidean groups R , Z andΤ .Carleson’s ...
Foukzon, Jaykov
core  

Propagation of Memory Parameter from Durations to Counts [PDF]

open access: yes
We establish sufficient conditions on durations that are stationary with finite variance and memory parameter $d \in [0,1/2)$ to ensure that the corresponding counting process $N(t)$ satisfies $\textmd{Var} \, N(t) \sim C t^{2d+1}$ ($C>0$) as $t ...
Clifford Hurvich   +3 more
core  

Bootstrap and Higher-Order Expansion Validity When Instruments May Be Weak [PDF]

open access: yes
It is well-known that size-adjustments based on Edgeworth expansions for the t-statistic perform poorly when instruments are weakly correlated with the endogenous explanatory variable.
Gustavo A. Suarez   +2 more
core  

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