12,541 research outputs found
Shearer's inequality and Infimum Rule for Shannon entropy and topological entropy
We review subbadditivity properties of Shannon entropy, in particular, from
the Shearer's inequality we derive the "infimum rule" for actions of amenable
groups. We briefly discuss applicability of the "infimum formula" to actions of
other groups. Then we pass to topological entropy of a cover. We prove
Shearer's inequality for disjoint covers and give counterexamples otherwise. We
also prove that, for actions of amenable groups, the supremum over all open
covers of the "infimum fomula" gives correct value of topological entropy.Comment: 12 page
A Continuous-Time Model of the Term Structure of Interest Rates with Fiscal-Monetary Policy Interactions
We study the term structure implications of the fiscal theory of price level determination. We introduce the intertemporal budget constraint of the government in a general equilibrium model in continuous time. Fiscal policy is set according to a simple rule whereby taxes react proportionally to real debt. We show how to solve for the prices of real and nominal zero coupon bonds.Bond Pricing; Fiscal Policy; Mathematical Methods
A continuous-time model of the term structure of interest rates with fiscal-monetary policy interactions
We study the term structure implications of the fiscal theory of price level determination. We introduce the intertemporal budget constraint of the government in a general equilibrium model in continuous time. Fiscal policy is set according to a simple rule whereby taxes react proportionally to real debt. We show how to solve for the prices of real and nominal zero coupon bonds.bond pricing; fiscal policy; mathematical methods
Morphology of Salina offshore (Southern Tyrrhenian Sea)
In this paper, we present the first complete morphological map of the Salina offshore at a scale
of 1:100,000. The submarine flanks of the Salina edifice extend down to −650 to −1300 m, are
steep and characterized by an uneven morphology due to the presence of volcanic and erosivedepositional
features. The volcanic features cover ∼30% of the submarine portion and include
volcanic cones and bedrock outcrops. The remaining ∼70% is affected by a wide series of
erosive-depositional features. Among these, features related to Late Quaternary sea level
fluctuations comprise the insular shelf surrounding the island and overlying submarine
terraced depositional sequences. Mass-wasting features include landslide scars, channels, fanshaped
deposits and waveforms. The presented map provides useful insights for a better
understanding of the morphological evolution of the edific
- …