This paper gives two definability results in the local theory of the ω-enumeration degrees. First we prove that the local structure of the enumeration degrees is first order definable as a substructure of the ω-enumeration degrees. Our second result is the definability of the the classes Hn and Ln of the highn and lown ω-enumeration degrees. This allows us to deduce that the first order theory ...

Let n 1. We study the proof-theoretic strength of jump classes of the Turing degrees from the point of view of fragments of Peano arithmetic. By investigating the jump of a Σn definable cut in a model of Δn-induction, we show that over the base theory PA− +Δn-induction, the existence of a non-trivial lown Turing degree is equivalent to Σn-induction.

Between 1973 and 1985, 220 infants (age 1 day to 18 months, mean = 7 months) underwent repair of tetralogy of Fallot (TOF) or TOF/pulmonary atresia with 17 early deaths. Follow-up status was ascertained for 184 of 203 survivors (91%) at a postoperative interval of 2 to 185 months (mean = 60 months). Significant residual hemodynamic lesions included ventricular septal defect in three, and right ...

lodine-123 metaiodobenzylguanidine (MIBG) uptake was reported to be reduced compared to Tl-201 (Tl) in acute myocardial infarction (AMI). Within such an area, degrees of both sympathetic neural function and ischemic myocardial cell damage are considered to be greatly dispersed. These kinds of damage were reported to effect reporalization time in myocardial cells, and we evaluated our hypothesis...

In [2], Alexeev constructed a proper moduli space of polarized toric varieties. However, in addition to the main component containing the toric varieties, there were additional irreducible components which were tricky to eliminate in a canonical way. Later, Olsson [1] showed how adding a log structure to the toric varieties under consideration effectively restricted the problem enough to single...

We construct endomotives associated to toric varieties, in terms of the decomposition of a toric variety into torus orbits and the action of a semigroup of toric morphisms. We show that the endomotives can be endowed with time evolutions and we discuss the resulting quantum statistical mechanical systems. We show that in particular, one can construct a time evolution related to the logarithmic ...

1. Varieties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2. Characters and 1-Parameter Subgroups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3. Toric Varieties . . . . . . . . . . . . . . . . . . . . . . . . . ....

Schematic diagram of an alternate possible mechanism in the Lown-Ganong-Levine syndrome. The impulse from the sinoatrial node (SAN) arrives either via the posterior internodal tract (PIT) or the normal tract to the atrioventricular node (AVN) at a His-Purkinje junction (LAMBDA) distal to the recording site of the His electrode. Retrograde depolarization of the proximal, and antegrade depolariza...

node as the region responsible for activation of the heart.1 Laslett first suggested sinus node dysfunction as a cause of bradycardia in 1909, and during the 1950s and 1960s Short, Ferrer, Lown, and others described the clinical spectrum of sinus node dysfunction that is commonly called the “sick sinus syndrome resting sinus bradycardia.”2-5 Sinus node dysfunction can have multiple electrocardi...

I will not give a fatal draught to anyone if I am asked, nor will I suggest any such thing. From the Hippocratic Oath. Seldom a day elapses that we do not encounter either minor or major evidence of digitalis overdosage. Such experience has led a member of the house staff of the Peter Bent Brigham Hospital to remark that nowadays lanatoside is replacing homicide as a leading cause of death. Ber...