# Reference

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- Equations
- Searchable directory, arranged by field, of equations, constants, symbols and SI units. Also features LaTEX utilities, software links.

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- Geometry Formulas and Facts
- An excerpt from the 30th Edition of the CRC Standard Mathematical Tables and Formulas, covering the area of Geometry (minus differential geometry), by Silvio Levy.

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- Journal of the AMS
- Online collection of articles and research papers posted on Journal of American Mathematical Society.

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- K-12 math textbook content analysis
- Spreadsheets on the distribution of 1000 common math terms as used in K-12th grade mathematics textbooks over the last 30 years. Analysis in English, Spanish and French.

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- Math Tube
- Mathematics lecture videos and talks taken from The Pacific Institute for the Mathematical Sciences (PIMS) member universities and around the world.

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- Math formulas
- A large , free online lists of mathematics formulas. Collection of all basic and advanced formulas related to mathematics.

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- Mathematics Resources
- Offers a large number of links to mathematical resources, dedicated to various topics.

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- NIST Digital Library of Mathematical Functions
- Result of a project to provide a modern revision of Abramowitz and Stegun’s "Handbook of Mathematical Functions". The site includes definitions, properties, and graphs of many special functions.

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- PlanetMath
- A collaborative encyclopaedia with entries contributed under the GNU Free Documentation License.

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- Platonic Realms
- Online resource for the mathematics community: links library, bookstore, quotes, and online articles.

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- Summation Formulae
- For polynomials of degrees up to 50, generated using the Euler-Maclaurin method.

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- The Math Reference Project
- An electronic archive of articles by Karl Dahlke on topics ranging from high school geometry up to graduate level topology.

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- Wikipedia: Mathematics Section
- Free encyclopedia. Covers number systems, different math fields, foundations, history, applications, and famous problems.

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- Wolfram: Mathematical Functions
- Includes advanced formulas and visualizations of various equation, such as elliptical curves.