A Quasi-IRR for a Project Without IRR

On ultraproducts of Boolean algebras and irr

Anotated Content §1 Consistent inequality [We prove the consistency of irr(i<κ B i /D) < i<κ irr(B i)/D where D is an ultrafilter on κ and each B i is a Boolean Algebra. This solves the last problem of this form from the Monk's list of problems in [M2], that is number 35. The solution applies to many other properties, e.g. Souslinity.] §2 Consistency for small cardinals [We get similar results ...

A Third-Party Evaluation of the IRR Pilot

On Ultraproducts of Boolean Algebras and Irr Sh703

On the (non-)equivalence of IRR and NPV

The internal rate of return (IRR) is generally considered inferior to the net present value (NPV) as a tool for evaluating and ranking projects, despite its inherently useful comparability to the cost of capital and the return of other investment opportunities. We introduce the ‘‘selective IRR’’, a return criterion which, as a selection of an extended set of possible IRRs, is NPV-consistent. Th...

The Bradyrhizobium japonicum Irr protein is a transcriptional repressor with high-affinity DNA-binding activity.

The Irr protein is a global regulator of iron homeostasis in Bradyrhizobium japonicum, and a subset of genes within the Irr regulon are negatively controlled under iron limitation. However, repressor function, high-affinity DNA binding in vitro, or promoter occupancy in vivo of Irr for a negatively regulated gene has not been demonstrated. Here, we show that the blr7895 and bll6680 genes are ne...