User:Parrtech

History

American History

Pilgrim (Plymouth Colony)

English Literature

A Christmas Carol
Alice's Adventures in Wonderland

Mathametics

$1+1=2$

$A_{n}={\frac {1}{\pi }}\displaystyle \int _{0}^{2\pi }\!f(x)\cos {nx}\,dx\qquad (n=0,1,2,\dots )$

Bookmark

"Bookmark -
A strip of material used to mark a place in a book."

Of Interest

Complexity classes

Was Of Interest

Portal:electronics

Always Of Interest

English grammar

Puzzles

Sudoku

Writers

Fantasy Writers

Hans Christian Andersen

User Boxes

This user uses Google as a primary search engine.

This user is a participant in
WikiProject Mathematics.

Sand Box

user:Parrtech/Sandbox