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Teen mathematicians tie knots through a mind-blowing fractal

329 点作者 GavCo6 个月前

14 条评论

lovegrenoble6 个月前
A browser puzzle, based on &quot;Knot Theory&quot;. Not sure I learned anything from playing this, but that was fun:<p><a href="https:&#x2F;&#x2F;brainteaser.top&#x2F;knot&#x2F;index.html" rel="nofollow">https:&#x2F;&#x2F;brainteaser.top&#x2F;knot&#x2F;index.html</a>
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rizs126 个月前
Quanta looks like a magnificent magazine. Thank you for bringing it into my life! This is the first time I&#x27;ve come across it
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Koshkin6 个月前
&gt; <i>Every knot is “homeomorphic” to the circle</i><p>Here&#x27;s an explanation:<p><a href="https:&#x2F;&#x2F;math.stackexchange.com&#x2F;questions&#x2F;3791238&#x2F;introduction-to-topology-knots-and-circles-are-homeomorphic" rel="nofollow">https:&#x2F;&#x2F;math.stackexchange.com&#x2F;questions&#x2F;3791238&#x2F;introductio...</a>
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glial6 个月前
I love quanta so much. I wish there were a print version.
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calibas6 个月前
&gt; a tetrahedral version of the Menger sponge<p>Better known as a Sierpiński tetrahedron, AKA the 3d version of a Sierpiński triangle.
err4nt6 个月前
Can anyone explain why they bothered with the fractal at all, instead of using a 3 dimensional grid? Doesn&#x27;t a grid of the appropriate resolution provide the exact same? Or is it to show that they can do everything within even a subset of a 3D grid limited in this way?
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MengerSponge6 个月前
This is relevant to my interests
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singularity20016 个月前
I love that the proof is so elementary and understandable ( almost reminiscent of the Pythagorean theorem proofs) yet it might have some significance
dpig_6 个月前
Super cool. I would have liked to have seen a similar visualisation for how they solved it on the Sierpinski gasket.
itronitron6 个月前
Interesting, I&#x27;m tempted to apply this towards routing minecart rails in Minecraft.
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nsoonhui6 个月前
Sorry to ask this, but is the result itself significant enough to the community, if it&#x27;s not discovered by teens?
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RoboTeddy6 个月前
Quanta Magazine consistently explains mathematics&#x2F;physics for an advanced lay audience in ways that don&#x27;t terribly oversimplify &#x2F; still expose you to the true ideas. It&#x27;s really nice! I don&#x27;t know of any other sources like this.
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julianeon6 个月前
I&#x27;ve always wondered if it&#x27;s possible to harness teen minds to solve significant math problems in high school, if you formulated them well and found the right scope. I think it&#x27;s possible.
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emptiestplace6 个月前
&gt; But most important, the fractal possesses various counterintuitive mathematical properties. Continue to pluck out ever smaller pieces, and what started off as a cube becomes something else entirely. After infinitely many iterations, the shape’s volume dwindles to zero, while its surface area grows infinitely large.<p>I&#x27;m struggling to understand what is counterintuitive here. Am I missing something?<p>Also, it&#x27;s still (always) going to be in the shape of a cube. And if we are going to argue otherwise, we can do that without invoking infinity—technically it&#x27;s not a cube after even a single iteration.<p>This feels incredibly sloppy to me.
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