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LTLを使うのがこの垢だけの気がするので、以降リプライツリーTOPはこのアカウント（たぶんTOPが未収載Unlistedへの同じ垢からの公開範囲PublicリプはLTL収載）にする予定（日本語スマソ）
$\sin \pi = 0$
という大西ライオン心配ないさー が書かれているらしいスレ

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Arnold Schwarzenegger "I'm Back"! Now I get the this geometrical property, thankful to the God!

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The attached image is rough summary content of New Year Card, sorry Japanese.

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この鯖は普通のマストドンにあるリンクがねえゾ「固定しされたトゥート」mathstodon.xyz/web/pinned 「ミュートしたユーザー」mathstodon.xyz/web/mutes 「ブロックしたユーザー」mathstodon.xyz/web/blocks 「非表示にしたドメイン」mathstodon.xyz/web/domain_bloc 「削除して下書きに戻す」機能いいなコレ

I'm going to stream digits of π for all of π day!
(assuming my very hastily assembled streaming setup doesn't fall over and die)

The best memory of my internet life is that twitter.com/takatasennsei taught me the attached images. In Japanese, it seems to be well known as "3×3の完全虫食い算一覧" gensu.co.jp/saito/puzzle/a65wo

Our paper "Random triangles and polygons in the plane"] – in which we give a novel answer to Lewis Carroll's question "What is the probability a random triangle is obtuse?" – was published recently in the American Mathematical Monthly: doi.org/10.1080/00029890.2019.

Here's an animated version of Figure 2 from the paper, showing a geodesic in triangle space. The geodesic starts at the equilateral triangle shown, and the three curved paths show the tracks of the three vertices.

We've just released #Halcyon 2.2.5 with the following changes:
- Added French translation - Thanks to the unknown translator
- Improved German translation - Thanks @Givou

Would it be worth me putting them up for sale on a print-on-demand site?

Recently I made several tiling images using regular heptagons or 14-gons etc.

The image is combined "Olympic symbols" en.wikipedia.org/wiki/Olympic_ and "Tokyo 2020 Emblems" tokyo2020.org/en/games/emblem/

Yesterday I noticed the happy coincidence:
9² = 81; 8+1 = 9
8³ = 512; 5+1+2 = 8
7⁴ = 2401; 2+4+0+1 = 7
Happy near year all!

Japan has become a New Year, Congrats!

$1$～$6$ の整数和：$21$
$1$～$66$ の整数和：$2211$
$1$～$666$ の整数和：$222111$
$1$～$6666$ の整数和：$22221111$
$1$～$66666$ の整数和：$2222211111$

$6$ 以外で試すと、惜しい場合もあるのですがここまで綺麗には並んでくれない不思議？(´･_･｀)

mathtod.online/media/Su8sWNLww

See mathstodon.xyz/@unknown/101273 for a festive two-to-one star dissection. Merry Christmas, everyone, or whatever your appropriate seasonal greeting might be!

At Christmas Eve, I make images with reference to ENWP"Aleister Crowley's rendition of the Unicursal Hexagram, the symbol of Thelema" en.wikipedia.org/wiki/Aleister

Star Wall, not STAR WARS, it's joke…

The attached image is rough summary content of New Year Card, sorry Japanese.

I made image like before again, using the triangle of lengths's raito $37:13:\sqrt{2019}$ (similar to "Eisenstein triple" en.wikipedia.org/wiki/Eisenste and me twitter.com/wasanp_/status/104 )

The patterns of "中村義作万能分割" twitter.com/wasanp_/status/961 are about 4 cases as shown in the following picture.

#### I have poor English, and PPAP.'s choices:

A Mastodon instance for maths people. The kind of people who make $\pi z^2 \times a$ jokes.

Use $ and $ for inline LaTeX, and $ and $ for display mode.