Results 41 to 50 of about 80,904 (151)

Special greeks of a variance-gamma driven vasicek model

open access: yesScientific African, 2023
Abrupt happenings in financial markets have resulted to the need to adopt Lévy processes such as a variance gamma process in modelling financial derivatives since it has the ability to capture jumps that occur in such scenario.
Adaobi M. Udoye, Lukman S. Akinola
doaj   +1 more source

Stochastic monotonicity and duality for one-dimensional Markov processes [PDF]

open access: yes, 2011
The theory of monotonicity and duality is developed for general one-dimensional Feller processes, extending the approach from [11]. Moreover it is shown that local monotonicity conditions (conditions on the Lévy kernel) are sufficient to prove the well-
Kolokoltsov, V. N. (Vasiliĭ Nikitich)
core   +1 more source

Mixed Periodic-Classical Barrier Strategies for Lévy Risk Processes

open access: yesRisks, 2018
Given a spectrally-negative Lévy process and independent Poisson observation times, we consider a periodic barrier strategy that pushes the process down to a certain level whenever the observed value is above it.
José-Luis Pérez, Kazutoshi Yamazaki
doaj   +1 more source

Analysis of a Stochastic SICR Epidemic Model Associated with the Lévy Jump

open access: yesApplied Sciences, 2022
We propose and study a Susceptible-Infected-Confined-Recovered (SICR) epidemic model. For the proposed model, the driving forces include (for example) the Brownian motion processes and the jump Lévy noise.
Hari M. Srivastava, Jaouad Danane
doaj   +1 more source

Lévy-driven polling systems and continuous-state branching processes

open access: yesStochastic Systems, 2011
In this paper we consider a ring of N ≥ 1 queues served by a single server in a cyclic order. After having served a queue (according to a service discipline that may vary from queue to queue), there is a switch-over period and then the server serves the ...
Michel Mandjes   +3 more
doaj  

Small-Time Asymptotics of Option Prices and First Absolute Moments [PDF]

open access: yes, 2011
We study the leading term in the small-time asymptotics of at-the-money call option prices when the stock price process $S$ follows a general martingale. This is equivalent to studying the first centered absolute moment of $S$.
Abramowitz   +6 more
core   +1 more source

Kajian Integral Lintasan Levy dalam Mekanika Kuantum Fraksional untuk Membentuk Persamaan Schrodinger Fraksional

open access: yesRisenologi, 2020
The implementation of Lévy path integral generated by Lévy stochastic process on fractional Schrödinger equation has been investigated in the framework of fractional quantum mechanics.
Chandra Halim, M. Farchani Rosyid
doaj   +1 more source

Tourism levy collection for ‘Marketing South Africa’

open access: yesCogent Social Sciences
Governments around the world implement tourism taxes as a means of generating revenue to promote their respective destinations. South Africa introduced a voluntary tourism tax to raise additional funds for destination marketing. This paper focuses on the
Bernard Bonginkosi Ripinga   +2 more
doaj   +1 more source

L_1-distance for additive processes with time-homogeneous L\'evy measures [PDF]

open access: yes, 2014
We give an explicit bound for the $L_1$-distance between two additive processes of local characteristics $(f_j(\cdot),\sigma^2(\cdot),\nu_j)$, $j = 1,2$. The cases $\sigma =0$ and $\sigma > 0$ are both treated.
Etore, Pierre, Mariucci, Ester
core   +3 more sources

Lévy copulae for financial returns

open access: yesDependence Modeling, 2016
The paper uses Lévy processes and bivariate Lévy copulae in order to model the behavior of intraday log-returns. Based on assumptions about the form of marginal tail integrals and a Clayton Lévy copula, the model allows for capturing intraday cross ...
Okhrin Ostap
doaj   +1 more source

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