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

**Peter** @pkra@mathstodon.xyz · Mar 20, 2019, 13:30

**Peter** @pkra@mathstodon.xyz · Mar 20, 2019, 13:30

Mar 20, 2019, 13:30

Peter @pkra@mathstodon.xyz

abel prize, mathematic in germany Show more

**Peter** @pkra@mathstodon.xyz · Mar 20, 2019, 11:09

**Peter** @pkra@mathstodon.xyz · Mar 20, 2019, 11:09

Mar 20, 2019, 11:09

Peter @pkra@mathstodon.xyz

Free simile: Selling a liquid that requires shaking in a container that cannot close properly.

Now let's clean up.

**Peter** @pkra@mathstodon.xyz · Mar 20, 2019, 08:12

**Peter** @pkra@mathstodon.xyz · Mar 20, 2019, 08:12

Mar 20, 2019, 08:12

Peter @pkra@mathstodon.xyz

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)

**Peter** @pkra@mathstodon.xyz · Mar 19, 2019, 13:01

**Peter** @pkra@mathstodon.xyz · Mar 19, 2019, 13:01

Mar 19, 2019, 13:01

Peter @pkra@mathstodon.xyz

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

http://www.ams.org/news?news_id=4970

**Peter** · Mar 10, 2019, 08:10

Peter boosted

**0xDE** @11011110@mathstodon.xyz · Mar 10, 2019, 08:10

Mar 10, 2019, 08:10

0xDE @11011110@mathstodon.xyz

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).

**Peter** · Mar 13, 2019, 20:59

Peter boosted

**0xDE** @11011110@mathstodon.xyz · Mar 13, 2019, 20:59

Mar 13, 2019, 20:59

0xDE @11011110@mathstodon.xyz

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.

**Peter** @pkra@mathstodon.xyz · Mar 18, 2019, 18:33

**Peter** @pkra@mathstodon.xyz · Mar 18, 2019, 18:33

Mar 18, 2019, 18:33

Peter @pkra@mathstodon.xyz

@rusawe woohoo! Willkommen!!

**Peter** @pkra@mathstodon.xyz · Mar 16, 2019, 12:56

**Peter** @pkra@mathstodon.xyz · Mar 16, 2019, 12:56

Mar 16, 2019, 12:56

Peter @pkra@mathstodon.xyz

Any suggestions for video editors on Android? Just clipping, resizing, and compressing would be fine.

**Peter** · Mar 15, 2019, 23:55

Peter boosted

**monoxyd** @monoxyd@mastodon.social · Mar 15, 2019, 23:55

Mar 15, 2019, 23:55

monoxyd @monoxyd@mastodon.social

Hat jemand Empfehlungen für Wordpress-Themes, die gut mit Podlove können?

**Peter** @pkra@mathstodon.xyz · Mar 15, 2019, 11:58

**Peter** @pkra@mathstodon.xyz · Mar 15, 2019, 11:58

Mar 15, 2019, 11:58

Peter @pkra@mathstodon.xyz

voiceover Show more

**Peter** · Mar 13, 2019, 19:38

Peter boosted

**Anne** @anne@beach.city · Mar 13, 2019, 19:38

Mar 13, 2019, 19:38

Anne @anne@beach.city

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

https://3dprintingindustry.com/news/ikea-israel-launches-free-3d-printable-thisables-to-improve-furniture-accessibility-150982/

5a05e4642fe18992.png

**Peter** · Mar 13, 2019, 15:53

Peter boosted

**Christian Lawson-Perfect** @christianp@mathstodon.xyz · Mar 13, 2019, 15:53

Mar 13, 2019, 15:53

Christian Lawson-Perfect @christianp@mathstodon.xyz

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