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| The correlation between two vectors is the cosine of the angle between the centered data. While the *cosine is a measure of association*, the literature has spent little attention to the use of the *sine as a measure of distance*. A key application... |
| **ToString** is a routine in *Mathematica*, that has default FormatType -> OutputForm and that has no attribute HoldFirst. For applications for the Interpreter for TEX it makes more sense to have attribute HoldFirst. When this is used, then other... |
| Many fine *Mathematica* notebooks in English are inaccessible to users of other languages, especially to young people growing up in other languages. Translating a *Mathematica* notebook - conventionally from English into another language - involves... |
| ##Abstract## This notebook presents tables for addition and subtraction that have a better use of the place value system. The method is already used in Holland for addition in levels but this notebook extends for addition in differences and... |
| H = -1 is an universal constant. H represents a half turn along a circle, like complex number i represents a quarter turn. Kids know what it is to turn around and walk back along the same path. H creates the additive inverse with x + H x = 0 and the... |
| The following is a notebook in the cloud (1 MB), that one can best download and run on the desktop (see the browser in the lower right). It has initialisation cells for two small packages. ... |