Welcome to Idius Land!.  I'm currently in the process of overhauling the site.  I'm working on the overall structure and planning the content. This web site is mostly a hobby, so progress is slow. Thus far, I have only added these new pages:

The Pythagorean theorem
Integration by parts
Research log
web log (Across the Universe)
Completing the square
About Idius Land!
Résumé / CV
Euler's formula
Pretty Parametric Plots
About Pretty Parametric Plots
The quadratic formula
Inverse trig function derivatives
Implicit differentiation
My research
Photo gallery
The product rule
Complex trigonometry
Approximation in Physics
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Contravariant vs covariant
Complex numbers
Physics resources
Inverse trigonometric functions
A Two-Point cubic spline
Vectorization with SSE