**Education**

Prime factors and numbers divisibilityIf you work with integer numbers then is a good idea to know how to factorize them into prime factors, calculate their greatest common factor and least common multiple, check on numbers divisibility and also find all divisors of a number and much more. One example where you can apply all the above described knowledge is when you have to reduce fractions to lower terms (simplify them). numere-prime.ro website comes in handy and can easily help you with all the operations described above, and...more info>>http://www.numere-prime.ro |

Convert Roman numerals, reading rulesRoman numerals reading rules and converter of numbers and calendar dates into Roman numerals. Roman numerals were used for almost 2000 years, first within the Roman Empire and later on in Europe, up to around 1300 AD., when they were slowly replaced by the Arabic numbers (took from Hindu). The two converters on the website can be used to convert Arabic numbers and also calendar dates into Roman numerals. All the results (for larger converted numbers, at least) are explained. All the conversions...more info>>http://www.numere-romane.ro |

Ordinary fractions math operationsDo you need to make basic operations with ordinary fractions? Do you need to learn the basics? fractii.ro website offers you an online engine that is able to take your input and automatically add ordinary fractions, subtract, multiply, reduce to lower terms, compare two or sort out multiple fractions. All the operations can be run with only two fractions or more. The beauty is that this engine will not only compute the final result, but also describe the necessary steps to be taken in order to...more info>>http://www.fractii.ro |

Percentages calculatorsThis is a website that helps users with percentages calculations. Percentages are an important part of our day to day life and itâ€™s important to know how to work with them. Simply put, percentages are the end result of calculating some percent of numbers, where one percent is one hundredth of a given value. You can calculate on this website percentages from numbers in three different ways, by using three different forms that can do that. Also, you can convert decimal and ordinary fractions or...more info>>http://percentages.calculators.ro |

On My Phd - signal processingDuring my Ph.D. I learned a lot in the field of signal processing. You would be surprised how much mathematic is involved when processing a signal. For example, removing noise from a signal can range from a simple filtering process up to a complex optimization problem. Here I explain topics I learned during my PhD, with many pictures and examples to make it easier to understand. I also made interactive examples so you can experiment and a feeling for how things work. Usually they involved a plot...more info>>http://www.onmyphd.com |

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