Glossary ================= .. glossary:: Fair Value Rational and unbiased estimate of a potential market price. Here used as synonym the :term:`Theoretical Value`. Theoretical Value Price as determined by a quantitative model. Cash Flow A payment (in a currency) at a certain time. Cashflows from the past and the future are always undiscounted. Specification A specification encapsulates all information of a product that is required to price it and handle all lifecycle events.