Tap / click on image to see more RealViewsTM
$17.85
per keychain
The Euler formula Key Ring
Qty:
Style
Aluminum Circle
+$4.65
+$4.65
+$22.85
+$22.85
About Keychains
Sold by
About This Design
The Euler formula Key Ring
Show your love of math and your appreciation for your math education with this subtly tasteful mousepad. Euler's identity involves the special numbers 0 and 1 and relates the transcendental numbers e and pi to integers. This stems from Euler's identity which itself is a consequence of the Taylor series representations. A perfect gift for your favourite polymath, a dear friend or yourself.
Customer Reviews
4.6 out of 5 stars rating5.4K Total Reviews
5,431 Reviews
Reviews for similar products
5 out of 5 stars rating
By Ali Y.4 February 2026 • Verified Purchase
Metal Circle Keychain, 5.08 cm
Lovely & cute keychains i love them thank you sooo much ,they also reached to me soo fast 😍.
from zazzle.com (US)
5 out of 5 stars rating
By linda f.18 June 2025 • Verified Purchase
Premium Round Keychain, Small (3.65 cm)
So cute and this is perfect!!!
from zazzle.com (US)
5 out of 5 stars rating
By Anonymous22 September 2025 • Verified Purchase
Metal Circle Keychain, 5.08 cm
I went on vacation and family and friends want me to get them a key chain I was already returning home so I got it from zazzle there happy!!
from zazzle.com (US)
Tags
Other Info
Product ID: 146000667320437650
Posted on 19/09/2012, 6:47 AM
Rating: G
Recently Viewed Items