They emerge from the car to face a pair of brownstones, stately narrow things, which seem to have been similarly renovated and decorated.

Due to the unforeseen circumstances, you are allowed an extension of two weeks to complete the task.

One of the most important developments of algebraic number theory is the creation of ideal numbers. All ideal numbers can be classified into ideal number classes. Both the study of ideal numbers and the computation of ideal number classes are important problems of algebraic number theory. The introduction of ideal numbers was meant originally for the number theory, but now ideal numbers have become an important tool in algebra.

A tip o' the hat to those in America's Hat.