9 research outputs found
Epps Effect and the Signature of Short-Term Momentum Traders
It is a well-documented fact that the correlation function of the returns on
two "related" assets is generally increasing as a function of the horizon
of these returns. This phenomenon, termed the Epps Effect, holds true in a wide
variety of markets, and there is a large body of literature devoted to its
theoretical justification. Our focus here is to describe and understand a
deviation to the Epps effect, observed in the context of the foreign exchange
and cryptocurrency markets. Specifically, we document a sharp local maximum of
the cross-correlation function of returns on the Euro EUR/USD and Bitcoin
BTC/USD pairs as a function of . Our claim is that this anomaly reveals the
activity of short-term momentum traders.Comment: 9 pages, 4 figure
Nonlinear Eigenvalues and Bifurcation Problems for Pucci's Operator
In this paper we extend existing results concerning generalized eigenvalues
of Pucci's extremal operators. In the radial case, we also give a complete
description of their spectrum, together with an equivalent of Rabinowitz's
Global Bifurcation Theorem. This allows us to solve equations involving Pucci's
operators
Trajectory dynamical systems and their attractors.
We start with the definition of Kolmogorov ε-entropy, via which we define fractal dimension of the compact set in the metric space. We will use these two concepts in the sequel