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ei π + 1 = 0
(say "E to the power of i pi, plus one, equals zero")

This equation, by Leonhard Euler (say "oiler"), 1707-1783, is widely regarded as the most beautiful in all mathematics. Called "Euler's identity", it relates the numbers 1, 0, e (2.71828..., the base of natural logarithms), Π (3.141592..., the ratio of a circle's diameter to its circumference) and i (the square root of minus 1, the basis of the "imaginary" numbers) - numbers nobody expected to be related. And it unites the relations of addition, multiplication, exponention and equation, all in a few elegant symbols.

This version is accompanied by an elegant graph of the equation, on a complex plane (an Argand diagram). Imaginary numbers are measured upward. The curve starts at e0=1 and goes with velocity i till it reaches p, then in a straight line to 0.

Euler+graph Mug
Euler+graph Mug
$14.00
Euler+graph Large Mug
Euler+graph Large Mug
$15.00
Euler+graph Stein
Euler+graph Stein
$17.00
Euler+graph Button
Euler+graph Button
$4.75
Euler+graph Magnet
Euler+graph Magnet
$4.75
Euler+graph Rectangle Magnet
Euler+graph Rectangle Magnet
$5.50
Euler+graph 2.25
Euler+graph 2.25" Button (10 pack)
$20.00
Euler+graph 2.25
Euler+graph 2.25" Magnet (10 pack)
$20.00
Euler+graph Rectangle Magnet (10 pack)
Euler+graph Rectangle Magnet (10 pack)
$34.00
Euler+graph Framed Tile
Euler+graph Framed Tile
$11.50
Euler+graph Tile Coaster
Euler+graph Tile Coaster
$7.00
Euler+graph Keepsake Box
Euler+graph Keepsake Box
$23.50
Euler+graph Greeting Cards (Pk of 10)
Euler+graph Greeting Cards (Pk of 10)
$18.00
Euler+graph Postcards (Package of 8)
Euler+graph Postcards (Package of 8)
$8.50
Euler+graph Framed Panel Print
Euler+graph Framed Panel Print
$39.00
Euler+graph Mini Poster Print
Euler+graph Mini Poster Print
$7.50
Euler+graph Calendar Print
Euler+graph Calendar Print
$7.00
Euler+graph Journal
Euler+graph Journal
$11.50
Euler+graph Mousepad
Euler+graph Mousepad
$14.00
Euler+graph Throw Pillow
Euler+graph Throw Pillow
$19.00
Euler+graph Tote Bag
Euler+graph Tote Bag
$16.00
Euler+graph Dark T-Shirt
Euler+graph Dark T-Shirt
$25.00
Euler+graph Pocket Dark T-Shirt
Euler+graph Pocket Dark T-Shirt
$25.00
Euler+graph Long Sleeve Dark T-Shirt
Euler+graph Long Sleeve Dark T-Shirt
$29.00
Euler+graph Pocket Long Sleeve Dark T-Shirt
Euler+graph Pocket Long Sleeve Dark T-Shirt
$29.00
Euler+graph White T-Shirt
Euler+graph White T-Shirt
$22.00
Euler+graph Value T-shirt
Euler+graph Value T-shirt
$12.50
Euler+graph Women's Cap Sleeve T-Shirt
Euler+graph Women's Cap Sleeve T-Shirt
$23.50
Euler+graph Women's T-Shirt
Euler+graph Women's T-Shirt
$23.00
Euler+graph Women's Dark T-Shirt
Euler+graph Women's Dark T-Shirt
$25.50
Euler+graph Pocket Women's Dark T-Shirt
Euler+graph Pocket Women's Dark T-Shirt
$25.50
Euler+graph Women's Long Sleeve Dark T-Shirt
Euler+graph Women's Long Sleeve Dark T-Shirt
$29.50
Euler+graph Pocket Women's Long Sleeve Dark T-Shir
Euler+graph Pocket Women's Long Sleeve Dark T-Shir
$29.50
Euler+graph Men's Sleeveless Tee
Euler+graph Men's Sleeveless Tee
$22.00
Euler+graph Fitted T-Shirt
Euler+graph Fitted T-Shirt
$24.00
Euler+graph Kids T-Shirt
Euler+graph Kids T-Shirt
$21.00
Euler+graph Long Sleeve T-Shirt
Euler+graph Long Sleeve T-Shirt
$27.00
Euler+graph Ringer T
Euler+graph Ringer T
$22.00
Euler+graph Sweatshirt
Euler+graph Sweatshirt
$36.50
Euler+graph Hooded Sweatshirt
Euler+graph Hooded Sweatshirt
$42.00
Euler+graph Golf Shirt
Euler+graph Golf Shirt
$25.00
Euler+graph Baseball Jersey
Euler+graph Baseball Jersey
$25.00
Euler+graph Jr. Jersey T-Shirt
Euler+graph Jr. Jersey T-Shirt
$26.00
Euler+graph Jr. Hoodie
Euler+graph Jr. Hoodie
$34.00
Euler+graph Jr. Raglan
Euler+graph Jr. Raglan
$24.00
Euler+graph Jr. Spaghetti Tank
Euler+graph Jr. Spaghetti Tank
$21.00
Euler+graph Women's Raglan Hoodie
Euler+graph Women's Raglan Hoodie
$37.50
Euler+graph Women's Tank Top
Euler+graph Women's Tank Top
$22.50
Euler+graph Women's Tracksuit
Euler+graph Women's Tracksuit
$49.50
Euler+graph Bib
Euler+graph Bib
$14.00
Euler+graph Toddler T-Shirt
Euler+graph Toddler T-Shirt
$15.50
Euler+graph Kids Hoodie
Euler+graph Kids Hoodie
$27.50
Euler+graph Kids Sweatshirt
Euler+graph Kids Sweatshirt
$23.00
Euler+graph Kids Baseball Jersey
Euler+graph Kids Baseball Jersey
$21.00
Euler+graph BBQ Apron
Euler+graph BBQ Apron
$20.00


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