Hobbymath's wanderings #17

Visualizing a 4-dimensional Sierpinski fractal.

A first introduction to p-adic numbers (David A. Madore, pdf).

Pythagorean quadruple (Wikipedia).

P-adic number (Wikipedia).

Visualizing the p-adic Integers (Albert A. Cuoco, pdf).

Visual Representations of p-adic Numbers (Mark Pedigo,pdf).

Mathematical English Usage - a Dictionary.

p-adicExpansion.

Field (Wikipedia).

Ring (Wikipedia).

Group (Wikipedia).

Abelian group (Wikipedia).

Bonse's inequality (Wikipedia).

Inequalities cheat sheet (pdf) .

IMRAD (Wikipedia).

Lagrange polynomial (Wikipedia).

Sandpile model (pdf).

Peasant Multiplication.

Ancient Egyptian multiplication (Wikipedia).

Monty Hall problem (Wikipedia).

History of Algebaric Triplets.

A Brief History of Quaternions (Amy Buchmann, pdf).

Quaternion (Wikipedia).

Inequality of arithmetic and geometric means (Wikipedia).

Heinz mean (Wikipedia).

Muirhead's inequality (Wikipedia).

Elementary symmetric sum.

Quaternion division.