4DLab - Critical Thinking  

Foundations Of Transcomplex Numbers.
By E. Perez
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Foundations Of Transcomplex Numbers,

and

The Golden EBook of Graphs of Mathematical Functions

are my free EBooks to my visitors.

The Golden EBook of Graphs of Mathematical Functions.
By E. Perez
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Flatland: A Romance of Many Dimensions.
By Edwin A. Abbott
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Another World or The Fourth Dimension.
By A. T. Schofield
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Physics for Entertainment.
By Yakov Perelman
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How To Draw A Straight Line.
By A. B. Kempe
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44 Selected Puzzles and Pastimes from Amusements in Mathematics.
By Henry Ernest Dudeney
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Selected Papers of Charles Hinton About the Fourth Dimension.
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