Tag Archives: unlearning

Operators, Functions, and Properties – part 30

Posted on 2010/11/16 by

In many of the posts in this series we’ve shown operators that work on a single number coming in and that produce a single number coming out.  This is a hugely important subcategory of operators, but single-in single-out operators aren’t … Continue reading →

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Representations – Black Boxes – Equivalence 2

Posted on 2010/05/08 by

We ended the previous post in this series by looking at this figure: To recap, a black box is something where we have access to the behavior but not the internal organization.  We can propose a model for a black … Continue reading →

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Operators, Functions, and Properties – part 1

Posted on 2010/04/19 by

I intend to write some things on operators in mathematics, beginning in this post.  Functions and properties will be brought in as appropriate.   The idea of operators is absolutely basic and central to computers and computing; they are also important … Continue reading →

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Representations – Black Boxes – Equivalence

Posted on 2009/09/10 by

I introduced the notion of a black box in an earlier post as some thing that has an internal organization that drives its behavior, and though we can see the behavior, we don’t have perfect knowledge of that internal organization.  … Continue reading →

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Representations – Number and Some Alternatives

Posted on 2009/08/25 by

There are lots of ways to represent number – such as the number “ten”.  As grown-ups, we’re so used to a particular way of representing “ten” that we don’t often stop to think about what we’re doing – we just … Continue reading →

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Representations – Formulas and Some Alternatives

Posted on 2009/08/23 by

There are systems of notation for mathematical expressions that are in wide use.  One of them is so widely used and so well-known that we often think of it as the only one, the real one, the true one and … Continue reading →

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Key Math Ideas Not Taught In School – Invariants

Posted on 2009/07/27 by

“Counting” involves a number of different mathematical ideas If you watch really young children count, you may notice that they aren’t all doing the same thing.  For some children, counting “one-two-three” is done in very much the same way as … Continue reading →

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