Web Sites (1 - 10 of 21): Integers

The 3x+1 problem and its generalizations * - The 3x+1 problem, also known as the Collatz problem, the Syracuse problem, Kakutani's problem, Hasse's algorithm, and Ulam's problem, concerns the behavior of the iterates of the function which takes odd integers n to 3n+1 and even integers n to n/2. The...
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John Case's COLT Page * - Consider the problem of finding a rule for generating a sequence of numbers such as 9, 61, 52, 63, 94, 46, 18, 1, 121, 441, ... . Here is a rule for this sequence. First compute the squares of successive integers beginning with 3, but, then, to generate t...
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Cryptographic Algorithms * - This page lists commonly used cryptographic algorithms and methods, and tries to give references to implementations and textbooks. Where available, comments are also made about the usefulness or other aspects of the algorithms. The comments should be inte...
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Programming in C * - Programming in C This is a set of notes on Programming in C. They were originally prepared as plain ASCII files using a private set of nroff macros and have now been converted to HTML.
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Math.com - The World of Math Online * - Math.com offers free homework help, free online math lessons, math formulas and cool interactive math exhibits. Buy math books, software, classroom materials and calculators for elementary and everyday math to algebra and beyond.
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Math League Help Topics - This is a help resource for 4th through 8th grades. We have just redesigned and reformatted these pages to enable faster loading and display times, but some pages still load slowly. Different browsers display graphics differently, so some math symbols may...
Reviewer: K. Mortensen     .   .

Free math worksheets from HomeschoolMath.net - Math worksheets for basic operations, fractions, decimals, percents, square roots, number charts.
Reviewer: M. Garrison     .   .

The 15 Most Famous Transcendental Numbers * - I am in love with the mysterious transcendental numbers. Did you know that there are "more" transcendental numbers than the more familiar algebraic ones? Even so, only a few classes of transcendental numbers are known to humans, and it's very di...
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The Largest Known Primes * - The internet source for information on record primes! Do you want to know the largest prime and who found it? How about the largest twin prime? Or the largest Sophie Germain? Then check this page. We have prime records, resouces and references.
Source/Host: University of Tennessee     .   .

C Optimisation tutorial * - This document has evolved over time and contains a number of the best ways to hand-optimise your C-code. Compilers are good, but they can't do everything, and here I hope to help you squeeze the best performance out of your code. This is not intended for...
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