Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
Not-too-tight debt limits are endogenous restrictions on debt that prevent agents from defaulting and opting for a specified continuation utility, while allowing for maximal credit expansion. For an agent facing some fixed prices for the Arrow securities, we prove that discounted not-too-tight debt limits must differ by a martingale. Copyright Springer-Verlag Berlin Heidelberg 2015