Anomalies in intertemporal choice (e.g. hyperbolic discounting, subadditive discounting, a sign effect, a magnitude effect, and a delay-speedup asymmetry) have been investigated in neuroeconomics and behavioral neuroeconomics. In this study we propose a “tempospect” theory of intertemporal choice which can account for these anomalies in intertemporal choice. The key features of the present theo...

HOMOTOPY THEORY AND GENERALIZED SHEAF COHOMOLOGY BY KENNETHS. BROWN0) ABSTRACT. Cohomology groups Ha(X, E) are defined, where X is a topological space and £ is a sheaf on X with values in Kan's category of spectra. These groups generalize the ordinary cohomology groups of X with coefficients in an abelian sheaf, as well as the generalized cohomology of X in the usual sense. The groups are defin...

Let G be a reductive group over a finite field F = Fq. Fix a non-trivial additive character ψ : F → Q × l . In [3] we introduced certain γ-functions γG,ρ,ψ on the set Irr(G) of irreducible representations of the finite group G = G(F ). As usual every function γG,ρ,ψ on Irr(G) gives rise to an AdG-equivariant function ΦG,ρ,ψ on G. The purpose of this paper is to construct an irreducible perverse...

This is the notes for the author’s presentation in the student seminar. We follow the paper [BMR1] to talk about a derived equivalence between the representations of a semisimple Lie algebra in positive characteristic and the category of twisted D-modules supported generalized Springer fibers. We work over a field k, and consider a semisimple Lie algebra g. Let U = U(g) be the enveloping algebr...

We x a a prime number l. We denote by E a nite extension of Ql inside a chosen algebraic closure Ql of Ql, by O the ring of integers in E , by F its residue eld, and by F an algebraic closure of F . We take as coeÆcient eld A one of the elds on the following list: F , F , E , or Ql. We work over a eld k in which l is invertible. We are given a smooth connected k-scheme S=k, separated and of nit...

We give a local formula for the index of a transverse Dirac-type operator on a compact manifold with a Riemannian foliation, under the assumption that the Molino sheaf is a sheaf of abelian Lie algebras.

We show that the deformation functor of an orthogonal (resp. symplectic) sheaf over a smooth projective scheme admits miniversal pro-family, identifying its space first-order deformations with first hypercohomology complex which is naturally constructed out sheaf. also provide obstruction theory these objects whose target second this complex.

The problem of reconstructing signed permutations on n elements from their erroneous patterns distorted by reversal errors is considered in this paper.A reversal is the operation of taking a segment of the signed permutation, reversing it, and flipping the signs of its elements. The reversal metric is defined as the least number of reversals transforming one signed permutation into another. It ...