Monthly Archives: December 2009

Groupings, Shopping Lists, Vectors: part 2

For an introduction to this series of posts, see here. Imagine Joe going up to the drive-through, to order for himself and his room mates.  Their orders are all combined on a piece of paper.  He reads it at the … Continue reading

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Groupings, Shopping Lists, Vectors: part 1

There is a surprisingly versatile part of mathematics that deals with groupings and collections of things.  The main ideas involved are really quite easy and practical.  If you can make sense of a shopping list written by a spouse or … Continue reading

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