# Save for Later

Stuff you want to check out later.

Keywords: Mathematics, Programming, Physics, Science, Logic

## About StumbleDNA ListDNA

## Free Mathematics Books

Free Mathematics Books - list of freely available math textbooks, monographs, lecture notes, and other documents.

## Low Level Bit Hacks You Absolutely Must Know

I decided to write an article about a thing that is second nature to embedded systems programmers - low level bit hacks. Bit hacks are ingenious little programming tricks that manipulate integers in a smart and efficient manner. Instead of performing...

## U of I Undergraduate Math Contest Problems and Solutions...

## 5 Coding Challenges to Help You Train Your Brain

## Become a Programmer, Motherfucker

If you don't know how to code, then you can learn even if you think you can't. Thousands of people have learned programming from these fine books:

## CosmoLearning Mathematics

## Exotic spheres, or why 4-dimensional space is a crazy place...

The world we live in is strictly 3-dimensional: up/down, left/right, and forwards/backwards, these are the only ways to move. For years, scientists and science fiction writers have contemplated the possibilities of higher dimensional spaces. What wou...

## Lesson Plan for Making a Speaker Laboratory

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## The Logic Lab: simulating simple circuits of logic gates...

A free browser based application for simulating simple circuits of logic gates.

## Book of Proof

## Make a Joule thief.

## 8 math talks to blow your mind

## Unsolved Problems -- from Wolfram MathWorld

There are many unsolved in mathematics. Some prominent outstanding unsolved problems (as well as some which are not necessarily so well known) include

## Weierstrass functions

Weierstrass functions are famous for being continuous everywhere, but differentiable "nowhere". Here is an example of one:

## The Tesseract

Visualization of a 4D animation

## Bicycle Power Calculator

Go to

## lectures

lectures

## The Theoretical Minimum

## Free Maths Video Lecture courses

Video Lectures, Video Courses, Science Animations, Lecture Notes, Online Test, Lecture Presentations. .