math

2022 November 27
$2 \! \times \! 2$ Matrix Eigenvector Formulas
A shortcut for finding the eigenvectors of a $2\times2$ matrix.
Eigenvector tool
2020 January 18
Tribonacci Constant Conjugate, $y=\frac{x-1}{x}$ and the Unit Circle
The tribonacci constant conjugate makes an appearance at the intersection of $y=\frac{x-1}{x}$ and the unit circle. Also a geometric construction by Xerardo Neira.
2019 December 16
Polygons and Metallic Means
The golden mean is found in the pentagon. Silver mean in the octagon. But what about the other metallic means?
Visualization tool
2019 December 10
The Family of Metallic Means
by Vera W. de Spinadel

blog

2023 September 08
I'm Back
Redesign + new math + secret project
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