Forwarded from Today I Learned 🎓
TIL that the "division symbol" is actually named the "Obelus", and that the ISO standard for mathematical signs says that it "should not be used" for division. [Source]
Today I Learned 🎓
TIL that the "division symbol" is actually named the "Obelus", and that the ISO standard for mathematical signs says that it "should not be used" for division. [Source]
Wikipedia
Obelus
division sign (U+00F7), obelus, or obell: mathematical operator; rating marker sometimes used as a hyphen variant, differentiated in some contexts; old punctuation mark to indicate questionable passages in manuscripts
🆕 blackpenredpen: Pythagorean Triple Formulas
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finding ALL pythagorean triples (solutions to a^2+b^2=c^2)
How to generate ALL the Pythagorean Triples, namely a^2+b^2=c^2 where a, b, c, are whole numbers? Here we will find all the solutions to a^2+b^2=c^2. This is a very classic number theory question and it is very suitable for high school algebra and geometry…
🆕 MindYourDecisions: Can You Figure Out The Special 6 Digit Number?
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Can You Figure Out The Special 6 Digit Number?
A 6 digit number abcdef has the following property. Make a table with 6 rows, where column i = 1, 2, 3, 4, 5, 6 is the number abcdef multiplied by i. (If the first row was 123456, the second row would be 123456 x 2 = 246912). The result is a Latin square:…
🆕 Numberphile: 21-card trick - Numberphile
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21-card trick - Numberphile
A simple trick with some neat math behind it. More on Numberphile cards at: http://www.bradyharanblog.com/numberphile-playing-cards
More links & stuff in full description below ↓↓↓
More cards video: http://bit.ly/Cards_Shuffling
This video features Anastasia…
More links & stuff in full description below ↓↓↓
More cards video: http://bit.ly/Cards_Shuffling
This video features Anastasia…
🆕 Think Twice: Pythagorean theorem | 3 Visual Proofs |
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Pythagorean theorem | 3 Visual Proofs |
Some of my favorite proofs of Pythagorean theorem. Enjoy:)
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Support my animations on:
https://www.patreon.com/Think_twice
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Forwarded from Mathematics Channel
🆕 Mathologer: Epicycles, complex Fourier and Homer Simpson's orbit
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Epicycles, complex Fourier series and Homer Simpson's orbit
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Today’s video was motivated by an amazing animation of a picture of Homer…
Mathologer Patreon: https://www.patreon.com/mathologer
Mathologer PayPal: paypal.me/mathologer
(see the Patreon page for details)
Today’s video was motivated by an amazing animation of a picture of Homer…