After a huge storm destroyed their intended route to the North Pole in the darkness of winter, instead of retreating, a small expedition team decide to explore the beautiful but unforgiving region of Avanerriaq, the home of the Polar Eskimos.  Meer

Incomplete second order linear differential equations in Banach spaces as well as first order equations have become a classical part of functional analysis.  Meer

Incomplete second order linear differential equations in Banach spaces as well as first order equations have become a classical part of functional analysis.  Meer

In the late sixties Matiyasevich, building on the work of Davis, Putnam and Robinson, showed that there was no algorithm to determine whether a polynomial equation in several variables and with integer coefficients has integer solutions.  Meer