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Infinite fractions and the most irrational number

Infinite fractions and the most irrational number on HackerTube: recommended by 3 Hacker News commenters across 3 separate months, 2019–2026.

Mathologer

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Mathologer uses continued fractions to show why the golden ratio is the most irrational number, comparing it with root 2, e and pi and pointing to where this shows up in nature.

Why Hacker News recommends it

Recommended as a clear, visual explanation of continued fractions and why phi is hardest to approximate by fractions.

people recommended it
3
separate months
3
strong recommendations
0
discussed on HN
2019–2026
“Pretty good Mathologer video about continued fractions”
— uoaei, Aug 2023, in “Decimal to Fraction”

What HN commenters said

5 Hacker News comments link this video. Each one links back to its thread.

uoaeiAug 2023Recommends

Pretty good Mathologer video about continued fractions: ▶ this video One neat trivium I like to quiz the mathematically-minded on is: what number is the most irrational , i.e., toward which number do rational approximations converge the slowest ? The answer can be determined from continued fractions and is discussed in the video near the end.

in “Decimal to Fraction” · View on HN

jerfOct 2022Recommends

"same with golden ratio (repeating 1s)" Mathologer has a good video in which he uses this to justify calling the golden ratio the "most irrational" number because of this expansion: ▶ this video The video also goes over the details of the pi expansion.

in “The Mystery of 355/113 (2010)” · View on HN

rrauenzaOct 2021Recommends

I was going to post this Mathologer video ( ▶ this video ) based on e being "the most irrational number" -- but I misremembered. It's the golden ratio, phi. But its still a really interesting video!

in “Where transcendental numbers hide in everyday math” · View on HN

AceJohnny2Jan 2026Cites it

Edit: years of searches and minutes after I post this I found ▶ this video thanks to using "continued fraction" in my search instead of "infinite series" X( Original: Tangentially, for a few years I've been looking for a Youtube video, I think by Mathologer [1], that explained (geometrically?) how the Golden Ratio was the limit of the continued fraction 1+1/(1+1/(1+1/(...))). Anyone know what I'm talking about? I know Mathologer had a conflict with his editor at one point that may have sown chaos on his channel. [1] [link]

in “Golden Ratio using an equilateral triangle inscribed in a circle” · View on HN

std_throwawayAug 2019Cites it

The golden ratio is the most irrational number: ▶ this video This is why it creates some distinctive patterns when applied to circular/spiral shapes.

in “Golden Ratio” · View on HN

Topics & tags

Recreational & visual mathPure mathematicsgolden ratioirrational numberscontinued fractionsmathologernumber theory