web design, art-history, browsers Show more

So here's the full process of me, painting a portrait of me ca. 1982: https://youtu.be/PQ3IKiTSjhw

I really like this painting a *lot* and I so enjoy watching the process - hope you like it, too! #artTimelapse #traditionalArt

abel prize, mathematic in germany Show more

The Very Hungry Caterpillar was published 50 years ago today.

https://en.wikipedia.org/wiki/The_Very_Hungry_Caterpillar?wprov=sfla1

(In Germany anyway

https://de.wikipedia.org/wiki/Die_kleine_Raupe_Nimmersatt?wprov=sfla1)

Oh look, it only took 16 years to give a woman an Abel Prize...

Timothy Browning has discovered that

\[\begin{align}

33&=8866128975287528^3\\

&+(-8778405442862239)^3\\

&+(-2736111468807040)^3.

\end{align}\]

This settles all but one case of which two-digit numbers can be represented as a sum of three cubes. The remaining case is \(n=42\).

For more, see https://gilkalai.wordpress.com/2019/03/09/8866128975287528%C2%B3-8778405442862239%C2%B3-2736111468807040%C2%B3/ (where I found out about this) or https://en.wikipedia.org/wiki/Sums_of_three_cubes (new article I wrote once I found out).

While searching for more references for the new Wikipedia article (https://en.wikipedia.org/wiki/Sums_of_three_cubes) I found a horrible mistake related to this problem in Wolfram's _A New Kind of Science_, p. 789 (https://www.wolframscience.com/nks/p789--implications-for-mathematics-and-its-foundations/). Wolfram says that the smallest solution to \(x^3+y^3+z^3=2\) is the known sporadic one,

\[\begin{align}2&=1214928^3\\

&+ 3480205^3\\

&+ (-3528875)^3.

\end{align}\]

But the parametric solution has many that are smaller: \((1,1,0)\), \((7,-5,-6)\), \((49,-47,-24)\), etc.

@rusawe woohoo! Willkommen!!

voiceover Show more

IKEA Israel launches free 3D printable ThisAbles to improve furniture accessibility

I'm going to stream digits of π for all of π day!

https://www.youtube.com/watch?v=wDW3nF9tX3c

(assuming my very hastily assembled streaming setup doesn't fall over and die)

#math #PiDay #πDay

@marcozehe darf ich Dich mit einer Firefox Android und Talkback Frage nerven?

VoiceOver, ebooks Show more

aria-labelledby vs aria-label, tip Show more

ebooks qc, vitalsource bookshelf Show more

epub, ADE, updates Show more

css grids, dev tools Show more

All things math on the web.

Works at krautzource, co-chairs W3C MathOnWeb CG, contributes to MathJax, runs mathblogging.org & BoolesRings.org.

Joined Nov 2017