User Portlet User Portlet

Thomas Colignatus
Discussions
These 2 notebooks with packages have major updates, at their original locations (otherwise some users might miss out on the update): (1) Pronunciation of the integers with full use of the place value system ...
&[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/5398859f-ffbb-4356-b18a-bc559845271d
Hi Szabolcs, My voting routine still uses the original *Combinatorica* package by Sriram V. Pemmaraju and Steven S. Skiena. This uses a somewhat other format, and I did not want to get lost in brackets. It is still included in Mathematica. If I...
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...
Hi b3m2a1, My suggestion is that you indeed put your material in MathSource, so that it is available and well-documented. http://library.wolfram.com/contribute/ At some stage, there ought to be more way for others to use the wealth of...
**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...
##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. ...
Thanks, Marco. The Brexit referendum question is only binary in legal terms (invoke article 50 or not) but it is not binary in terms of policy (how one would want to Remain or Leave). 17% put Remain between options of Leave, and voting then becomes...