Based on numerical simulations there seems to be a kind of consensus in the optimal tax literature that the marginal tax rate should fall rather than rise with income. Retaining the same formal structure as in Mirrlees (1971) this paper shows that this consensus is sensitive to a choice of the assumed form of utility of consumption. For the utility function quadratic in consumption optimum tax ...

An A∞-bialgebra is a DGM H equipped with structurally compatible operations { ω : H → H } such that ( H, ω ) is an A∞-algebra and ( H, ω ) is an A∞-coalgebra. Structural compatibility is controlled by the biderivative operator Bd, defined in terms of two kinds of cup products on certain cochain algebras of pemutahedra over the universal PROP U = End (TH). To Jim Stasheff on the occasion of his ...

Dallas Knight*, Alec Holt and Jim Warren


 Review of Disrupting Whiteness in Social Work by Sonia M. Tascón & Jim Ife (Eds.)Routledge, Oxon, 2022
 ISBN: 978-0-367-24750-8, pp.204, hardback, $291 NZD

background & aim:  considering the fact that cesarean section (c-section) poses greater risks of maternal and neonatal complications, compared to vaginal delivery, scholars seek different strategies to decrease the prevalence of this surgical procedure. birth ball exercises during pregnancy are among the proposed strategies. thus, this study aimed to determine the effect of using birth ball dur...

Marius Bozga, Jean-Claude Fernandez, Constantin Lucian Ghirvu, Susanne Graf, Jean Pierre Krimm, et al.. IF: An intermediate Representation and Validation Environment for Timed Asynchronous Systems. Wing, Jeannette M.; Woodcook, Jim; Davies, Jim. FM’99 Formal Methods World Congress on Formal Methods in the Developement of Computing Systems, Sep 1999, Toulouse, France. Springer, 1708, pp.307-327,...