Abstract We give a short proof of the contractibility space geodesic triangulations with fixed combinatorial type convex polygon in Euclidean plane. Moreover, for any $$n>0$$ n > 0 , we show that there exists triangulation, whose n -th homotopy gr...

We examine the proper scope of public-private partnerships in the context of a project consisting of two tasks, building and operation of a facility. We investigate the optimal arrangement regarding bundling versus unbundling and private ownership versus public ownership. Like Bennett and Iossa (2006), we assume that the innovative activity in the building stage has impacts on, among other thin...

In a property-rights framework, I study how organizational form and quantity contracts interact in generating investment incentives. The model nests standard property-rights and holdup models as special cases. I admit general message-dependent contracts, but provide conditions under which non-contingent contracts are optimal. First, I contribute to the foundation of the property-rights theory: ...

Let G be a locally compact group, 1 < p < ∞ and let ω be a weight function on G. Recently, we introduced the Lebesgue weighted L−algebra L ω (G). Here, we establish necessary and sufficient conditions for L ω (G) to be φ−contractible, pseudo-contractible or contractible. Moreover we give some similar results about L(G,ω).