JSTOR Daily

On a Stochastic Difference Equation and a Representation of Non-Negative Infinitely Divisible Random Variables

The present paper considers the stochastic difference equation Yn=AnYn-1+Bn with i.i.d. random pairs (An,Bn) and obtains conditions under which Yn converges in ...
JSTOR Daily

Eighth grade students' representations of linear equations based on a cups and tiles model

This is a preview. Log in through your library . Abstract This study examines eighth grade students' use of a representational metaphor (cups and tiles) for writing and solving equations in one ...
BBC

Graphs of quadratic functions

All quadratic functions have the same type of curved graphs with a line of symmetry. The graph of the quadratic function \(y = ax^2 + bx + c \) has a minimum turning point when \(a \textgreater 0 \) ...
Risk

Partial differential equation representations of derivatives with bilateral counterparty risk and funding costs

We derive a partial differential equation (PDE) representation for the value of financial derivatives with bilateral counterparty risk and funding costs. The model is very general in that the funding ...