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BC 0800? Roman Numerals | R
The Romans showed numbers into the thousands using these 7 symbols: I for 1, V for 5, X for 10, L for 50, C for 100, D for 500 and M for 1000.
/* Regular Expression

// Javascript
function 2arabic(c) {
    switch(c) {
        case 'I': return    1; break;
        case 'V': return    5; break;
        case 'X': return   10; break;
        case 'L': return   50; break;
        case 'C': return  100; break;
        case 'D': return  500; break;
        case 'M': return 1000; break;

var roman = 'MCMLXVIII';
var arabic = 0;
var previous = 0;
var current = 0;
for(i=0; i<roman.length; i++) {
        = 2arabic(roman.charAt(i));
    if(previous && previous<current) 
        arabic -= previous;
    else arabic += previous;
    previous = current;
arabic += current;

BC 0570 - 0495 Pythagoras | R
How many ways are there to prove the Pythagorean theorem? - Betty Fei

BC 0500? Pythagorean Mathematicians | R
Their dictum of "All is number" suggested that numbers were the building blocks of the Universe and part of this belief was that everything from cosmology and metaphysics to music and morals followed eternal rules describable as ratios of numbers.

BC 0500? Hippasus | R
According to Pythagoras theorem the diagonal length of a square with each side measuring one unit would be square root of two. The assumption that square root of two could be expressed as a ratio of two integers deduces a contradiction.

BC 0384 - 0322 Aristotle | R
The ancient Greek philosopher Aristotle taught that heavier objects fall faster than lighter ones.

08th century Hindu-Arabic numeral system | R
By the 8th century, Indian mathematicians had perfected positional notation and over the next several centuries, Arab merchants, scholars and conquerors began to spread it into Europe.

1202 Leonardo Fibonacci | R
Fibonacci asked himself how many pairs of rabbits originated from a single pair in one year. Each pair of rabbits will produce exactly one more pair of both sexes per month which in turn would be fertile from the second month after birth.

1564 - 1642 Galileo Galilei | R
Galileo's inspired use of a ramp had shown falling objects follow the mathematical laws. The distance the ball traveled is directly proportional to the square of the time.

1643 - 1727 Isaac Newton | R
Galileo had already discovered some years prior that the distance traveled by a falling object is represented by a function of time. Newton wondered how one could calculate the velocity of the object at any particular instance during the fall.

1646 - 1716 Gottfried Wilhelm Leibniz | R
Leibniz did similar work just a few years later, independently of Newton, and it is actually his notation that we still use today.

Crisis in the Foundation of Mathematics | R
Infinite Series

Defending Zeno's Paradox | R
Defending Zeno's Paradox

Euclidian Geometry | R
A point is nothing more than a location in space. It is zero-dimensional. From here we can create a one-dimensional object called a line by stringing an infinite number of points along a particular dimension.

Euclidian Geometry | R
By stringing an infinite number of lines along a dimension perpendicular to the line, a two-dimensional object called a plane can be obtained. And then if we string an infinite number of planes in either direction, we get three dimensional space.

The Map of Mathematics | R
The Map of Mathematics

Tom Campbell | R
Zeno's Paradoxes Solved by MBT Science Model

Zeno's Paradoxes | R
Zeno's Paradoxes
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