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Complex number. A complex number can be visually represented as a pair of numbers (a, b) forming a vector on a diagram called an Argand diagram, representing the complex plane. Re is the real axis, Im is the imaginary axis, and i is the " imaginary unit ", that satisfies i2 = −1. In mathematics, a complex number is an element of a number ...
The history of mathematics deals with the origin of discoveries in mathematics and the mathematical methods and notation of the past. Before the modern age and the worldwide spread of knowledge, written examples of new mathematical developments have come to light only in a few locales. From 3000 BC the Mesopotamian states of Sumer, Akkad and ...
Pythagoras of Samos[ a ] (Ancient Greek: Πυθαγόρας; c. 570 – c. 495 BC) [ b ] was an ancient Ionian Greek philosopher, polymath and the eponymous founder of Pythagoreanism. His political and religious teachings were well known in Magna Graecia and influenced the philosophies of Plato, Aristotle, and, through them, the West in general.
Trevor Larnach and Matt Wallner both had RBI singles in the 12th inning and the Minnesota Twins beat the Boston Red Sox 4-2 on Friday night. Winning for just the sixth time in their last 17 games ...
Kathryn Crosby, the actor, singer and widow of Bing Crosby, died Friday evening of natural causes at her home in Hillsborough, Calif. She was 90. A representative for the Crosby family announced ...
The long real line pastes together ℵ 1 * + ℵ 1 copies of the real line plus a single point (here ℵ 1 * denotes the reversed ordering of ℵ 1) to create an ordered set that is "locally" identical to the real numbers, but somehow longer; for instance, there is an order-preserving embedding of ℵ 1 in the long real line but not in the real ...
Earlier this month, Kate Middleton announced that she has finished her chemotherapy treatment. Yesterday, Kate made her first appearance since the release of that video message: She was pictured ...
t. e. The number π (/ paɪ /; spelled out as " pi ") is a mathematical constant that is the ratio of a circle 's circumference to its diameter, approximately equal to 3.14159. The number π appears in many formulae across mathematics and physics.