Numbers: ˇ Roman Numerals ˇ Prime Numbers ˇ Mean and Median ˇ Measurement ˇ Metric Conversions ˇ Measuring Motion ˇ Nautical Measurement
Tables and Formulas: ˇ Multiplication Table ˇ Squares and Square Roots ˇ Factorials ˇ Money ˇ How Coins Are Made ˇ Money Around the World ˇ Average Allowances
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internet - Calculator - Advanced Scientific Calculator - Wissenschaftlicher Taschenrechner
The Top Ten Record Primes: largest, twin, Mersenne, primorial & factorial, and Sophie Germain
The Complete List of the Largest Known Primes
Other Sources of Prime Information
Euclid's Proof of the Infinitude of Primes
The "Guinness book" of prime number records! Includes the 5000 largest known primes and smaller ones of selected forms (one-page summary) updated hourly! What are the Prime pages?
Prime Links Hundreds of links to other prime resources including history, programs, theory and more!
Lists of Primes The first 1,000 primes. The first 10,000,000 primes. Top 20 records (e.g., twin primes, Mersenne primes...) Lists of 300 digit primes. And much more!
Finding primes, proving primality Explains the mathematical theory behind how these record primes are found.
How many prime are there? How many primes are there? How Big of an Infinity?
The Largest Known Prime by Year: A Brief History Discusses how big have the largest known primes been historically (and uses that to predict how big they will be)!
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uvic - The (Combinatorial) Object Server
(E?)(L?) http://www.theory.csc.uvic.ca/~cos/
What is it?
The idea is that you specify a type of combinatorial object, together with specific parameter values, and COS will return to you a list of all such objects. COS can generate permutations, combinations, various types of trees, unlabelled graphs, linear extensions of posets, pentomino puzzle solutions, numerical partitions, and a host of other combinatorial objects.
In some instances you may specify the order in which the objects are generated (such as lexicographic or a Gray code order). Almost always the output may be presented in a variety of formats which you may specify. These different formats include well-known correspondences and representations of the objects. For example, permutations may be ouput in one-line notation, in cycle notation, or as a pair of Standard Young Tableau under the Schensted correspondence.
(E6)(L1) http://mathworld.wolfram.com/
(E?)(L?) http://mathworld.wolfram.com/letters/
MathWorldTM is the web's most complete mathematical resource, assembled over more than a decade by internet encyclopedist Eric W. Weisstein with assistance from the mathematics and internet communities.
MathWorld is a comprehensive and interactive mathematics encyclopedia intended for students, educators, math enthusiasts, and researchers. Like the vibrant and constantly evolving discipline of mathematics, this site is continuously updated to include new material and incorporate new discoveries.
INDEX: Algebra | Applied Mathematics | Calculus and Analysis | Discrete Mathematics | Foundations of Mathematics | Geometry | History and Terminology | Number Theory | Probability and Statistics | Recreational Mathematics | Topology | Animations | Live 3D Graphics
Eine Spitzensite mit vielen Erklärungen zu mathematischen Begriffen.
