4DLab - Critical Thinking

From zero to infinity in every dimension


Free EBooks to Download

Cover of the free Ebook: The 4-D Doodler.

The 4-D Doodler
Featured EBook


Cover of the free Ebook: 44 

Selected Puzzles of Dudeney.



Cover of the free EBook:
How to draw a straight line by A. B. Kempe.


Cover of the free Ebook titled: Selected 

Papers About the Fourth Dimension by Charles Hinton.


Download a free transcomplex numbers calculator!

Tha transcomplex calculator.

The Transcomplex Numbers Calculator is a small utility I coded for myself. It is not like other common calculators. In fact, I did it to make transcomplex numbers multiplications only, but since the common complex numbers are a subset of the the set of the transcomplex numbers, it can also be used to multiply complex numbers.

The Calculator is an executable file that requires no installation, no plug-ins, no decompression, and no compilation.

For a short tutorial on how to use it, go the Articles page.

Books related with this content

Quest for the Quantum Computer. \ Secrets of Mental Math. \
Shortcut Math