Captcha based on encyrpting and decrypting user data by mathematical operation

This Jekyll plugin is heavily inspired by Gerby, the tool used to build the Stacks Project and Kerodon. It allows you to build math textbooks as static websites which require no complex infrastructure to run.

charcoal grids are fluid on the inside, ready to respond at any moment, but contained in the candy shell of your choice, so they respond how and when and where you want them to. We don't design your site or dictate your markup, we just do the math and get out of your way.

Converts simple math formulae written in pure HTML to AsciiMath

Cinch Plugin that passes simple numeric math propblems to the Calc gem

Extmath is a library that extends Ruby's built-in math library. This gem reflects the current version (2.3.0) of the extmath library originally written by Josef Schugt.

Spherical Mercator provides projection math for converting between mercatormeters, screen pixels (of 256x256 or configurable-size tiles), and latitude/longitude

External DSL to express math operations like you do in MSExcel formula bar. The parser generate a AST (Hash) for a given expression.

Allows the ruby nil to be used in math operators. Allows the amazing division of zero.

Cinch Plugin to alow users to pass mathematical problems to the bot for evaluation

Mathematical expression evaluator for infix notation

If you need to create simple (in the mathematical sense), weighted graphs with random values for the connections and weights then this is the gem for you.

Loads logical or mathematical expression (in string) into Abstract Syntax Tree for later evaluation

Provides some basic statistical functions for a given data set.

lib to calc algebraic expressions,equation and more

Quick little arithmetic plain-text captcha

This gem has "Guess a Number" game.

Question generator

Mesopotamian mathematics.

A Simple and Funny Math