We present a formal model of haggling between a name-your-own-price retailer and a set of individual buyers. Rather than posting a price, the retailer waits for potential buyers to submit offers for a given product and then chooses to either accept or reject them. Consumers whose offers have been rejected can invest in additional haggling effort and increment their offers. The main advantage of...

Interface conditions are crucial in domain decomposition methods and their design has been the subject of many works. We propose in this paper a novel approach where only one or two real parameters have to be chosen for the entire interface. The method relies on van der Sluis’ result on a quasi optimal diagonal preconditioner for a symmetric positive definite matrix, see [35]. It is then possib...