this was an elementary school until 1999 but no longer. the current building was built in 2007. there’s a restaurant n a gift shop. the restaurant uses school desks. that’s all. no music room or nurse’s office we wanna stay in.

posted at 07:40:39

im an unschooler but i love school. i hope one day to create a true school: - no teachers - no lectures - no exams - a place for (independent) study - everyone is a girl except for me

posted at 06:47:25

roadside station “Mitakai branch school.” its located past Lake Gandō, an artificial lake in Yabukawa, one of the most coldest place in japan except Hokkaido. maps.app.goo.gl/v8g4eaz4mf1hRY…

posted at 06:12:13

i went to school for the first time in 18 yrs. first i ordered ramen. www.instagram.com/p/CxqSAGZSZSZ/ pic.twitter.com/RCUjkjs4zY

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posted at 05:33:36

i fell off the cliff but was unharmed n took the elevator back. half an hour late i was able to meet my parents.

posted at 05:00:59

seems i had cerebral anemia. i saw the red sign for the womens restroom n knew there was an accessible restroom next to it. i didnt know there was a restroom on the train.

posted at 04:49:20

on sep 25, i almost died. i had a stomachache n felt sick on the train. i got off halfway but atm i went blind. yellow. white. sun. “huh…? where…?” “restroom…” oh here it is… on my first visit to Iwate Kawaguchi Station, i miraculously found a restroom with my eyes closed.

posted at 04:08:50

we could learn a lot of literature from animated short films. such as shakespeare’s macbeth. when i was little, there was educational software called “Momonga Club” by JustSystems, which included animations such as Shūji Terayama’s “I Want to Dance But I Can’t Dance.”

posted at 06:14:14

today i ate soba while watching Takita Yū Rakugo Theater: Toki Soba. youtu.be/rB01N5YnZiQ pic.twitter.com/GeevWQCACE

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posted at 05:40:35

@slit4gojo i meant it as a metaphor. (pls see my previous tweets.) tho i couldve fallen off the platform fr i was so lucky

posted at 00:10:18

there was a point where a lot of water was coming out js for the record (tama hibiki [gem sounding] falls) pic.twitter.com/pFbOCgYTXG

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posted at 16:12:08

conclusion: speleology is hard. i still havent figured out what a limestone cave is. it could be commercial caves arent interesting.

posted at 15:28:38

the sign at the entrance said no photography but i js found a review that said they were told photography was allowed

posted at 15:08:46

on the other side of the roadway was the Ryūsen New Cave Science Museum, where photography was prohibited. this was another cave, more academic. maps.app.goo.gl/iqKCJSqWvxi4GL…

posted at 15:02:33

at the end, there was a way back up the stairs to the entrance. do not take video while climbing stairs twitter.com/i/web/status/1… pic.twitter.com/aewMXx6rmh

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posted at 14:38:57

the passage was narrow but solid n there were several wheelchair users.

posted at 14:37:06

glad i hadnt received my iphone 15 yet i couldve dropped the phone.

posted at 13:47:43

seems most ppl visit to see such blue lakes. pic.twitter.com/CwtTgcRwWH

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posted at 13:39:36

seems it was ~15c (59f) near the entrance n ~10c (50f) at the back.

posted at 13:24:34

so ryusendo was full of exhibits with no scientific explanation, like this “cave venus.” pic.twitter.com/AtH1Oc9L86

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posted at 13:18:23

the second exhibit “the outline of ryusendo cave” and “bats of ryusendo cave.” twitter.com/i/web/status/1… pic.twitter.com/PhxYHx1Tk4

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posted at 12:35:00

the first exhibition “the abyss of longevity.” pic.twitter.com/5MbiHKNyrd

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posted at 12:09:55

from the entrance to the first exhibition. the floor was wet. it was cold.¹ the passage was narrow. ¹ the inside was 16 c (61 f) while the outside was 19 c (66 f). pic.twitter.com/LeGlGSqeY3

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posted at 11:46:39

so on sep 25, i went to Ryūsendō Cave in Iwaizumi, Iwate. the street view below best describes the front of the entrance. maps.app.goo.gl/Tq3y1aQog28oaj…

posted at 11:18:05

i signed up for Rakuten Mobile n got a Rakuten Hand, then MNP’d to Y Mobile, got an Oppo n cancelled immediately.

posted at 12:30:32

I bought Rakuten Hand 5G for $10 n Oppo A55s 5G for $20. (i never use multi acc. just use the same acc on multi devices.) pic.twitter.com/JXoSECPXsS

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posted at 12:10:50

please refer to my channel for details. www.youtube.com/@yuuki15

posted at 10:41:11

reposting my face for new ppl pic.twitter.com/AHUZbLHZnV

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posted at 10:35:43

i’m ngsb.¹ i never drink or smoke. my trainer level is 50. things i didn’t include. ¹ no girlfriend since birth

posted at 09:33:55

i mean, it’d be nice to know what background ppl r tweeting from.

posted at 09:05:19

Created my biodata. 𝕏 should’ve this feature so we can see what 📱 ppl r using in the iphone vs android war. docs.google.com/spreadsheets/d… pic.twitter.com/sRp0uKah2O

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posted at 08:45:29

Anime i recently watched 2022 - kiki’s delivery service - the tale of the princess kaguya - re:zero s1 2020 - detective conan all eps 2019 - tokyo ghoul s1-3 - demon slayer s1 2017 - age 12 s1-2

posted at 18:30:31

It’s been 7 yrs since i decided to watch Your Name. heard it’s a fad.

posted at 18:29:37

or at least 3, to play the game of life.

posted at 17:16:12

i want 10 friends to play a game of werewolf (aka mafia).

posted at 17:14:09

i’m currently organizing my research. min.togetter.com/id/yuuki26

posted at 11:04:00

this is called a generating function n was discovered by de Moivre in the 18c, according to wiki. seems using aₙ = aₙ₋₁ + aₙ₋₂, it follows 𝑓(x) = x/(1 - x - x²). n some reasoning leads to aₙ = (ϕⁿ - (-ϕ)⁻ⁿ)/√5.

posted at 10:28:19

• Recurrence relation seems one way to find an exact formula for a sequence like aₙ = 1, 1, 2, 3, 5, 8, … is the “inverse of the Taylor expansion.” its known that eˣ = 1/0! x⁰ + 1/1! x¹ + 1/2! x² + …, but the idea is to find 𝑓 such that 𝑓(x) = 1x¹ + 1x² + 2x³ + 3x⁴ + ….

posted at 10:04:41

0.999…=1 is obvious if the lhs is viewed as a limit. there’s no doubt that 0.999… is getting closer to 1.

posted at 08:59:41

• Limit lim[x→∞] f(x) = L basically means that the point where the value gets closer (as x gets larger) is L. nothing more, nothing less. not smtg like “equals L after infinite steps.” (idk if such an interpretation is possible in higher math.)

posted at 08:59:26

• Consider drawing a figure using only a function that draws a point (x,y) on a plane, say, drawPoint(x,y). considering drawing a line leads to the equation of a line. considering drawing a circle leads to trig functions.

posted at 07:53:52

however, it was discovered that this can be interpreted as the point (x,y) being moved to (e,f) by the matrix ((a,b),(c,d)). (by Cayley in the 19th century, according to wikipedia.) so matrix multiplication represents the composition of maps f∘g, and so on.

posted at 07:33:44

My current understanding of mathematics. • Matrices are linear maps. matrices were historically just a notation for simultaneous equations with coefficients and variables separated. e.g. writing ax + by = e cx + dy = f as (a b)(x) = (e) (c d)(y) = (f).

posted at 07:33:11

deleted my ts complex number class. (archive) web.archive.org/web/*/https://…

posted at 05:01:59

i forgot my ROG Phone 5s Pro (2021–2023)

posted at 02:57:24

still no Scizor, Absol, etc. (no Metagross, Lucario, or Galarian Darmanitan either.)

posted at 18:44:21

When I started this acc 2 yrs ago, I wanted Charizard. And now I have 5. - Fire Spin/Blast Burn* - Dragon Breath*/BB*/Dragon Claw - Wing Attack*/BB* - Ember*/BB* - Air Slash/BB* pic.twitter.com/9TX8Wbvp67

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posted at 18:06:58

i’ve tons of persimmons in the fridge for a month n they’re totally fine.

posted at 15:12:53

i’ve basically only got meat n onions

posted at 15:00:46

i want a shower gel that can also be used as face wash. im too lazy pic.twitter.com/abzlZowuJl

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posted at 16:08:48

bouta go take a 🛁

posted at 14:27:14

probably the key is “Euclidean theorem”: gcd(a, b) = gcd(b, a mod b). i.e., the gcd of two numbers equals the gcd of some smaller numbers. smtg like gcd(32, 24) equals gcd(24, 8). the algorithm may be based on this theorem. so the question is why this holds.

posted at 11:40:02

i’m currently researching the Euclidean algorithm function gcd(a, b) { if (b === 0) { return Math.abs(a); } return gcd(b, a % b); } but haven’t figured it out yet. seems this can also be applied to polynomials n is related to Bézout’s identity etc., tho.

posted at 11:06:05

bear’s basking in the sun on my table

posted at 08:24:17

actually it was 12,000 JPY. from now on i’ll tweet ¥100 as $1 for the best understanding.

posted at 06:41:16

bought a Nitori gaming floor chair $120. ⭐☆☆☆☆ this isn’t supposed to be put on a mattress. hard n uncomfortable. all i rlly wanted was a backrest. pic.twitter.com/KTWZ3wJO1n

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posted at 06:21:07

slept today too slept at 20:00 woke up at 4:00

posted at 05:50:38

removed all non-code from my github. so that ppl can easily see my substantial projects. github.com/yuuki15?tab=re…

posted at 07:41:02

only persimmon n pear this morning. pic.twitter.com/0LTWWwWmio

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posted at 05:58:13

pls use any of these in case of emergency or for search purposes.

posted at 10:14:21

here are some mirrors of my twitter: - nitter nitter.net/yuuki26 - twilog twilog.togetter.com/yuuki26 - togetter togetter.com/li/2144709 - github github.com/yuuki26-230930… - mastodon mastodon.social/@yuukikonno - notestock notestock.osa-p.net/@yuukikonno@ma…

posted at 10:11:50

today i went with squash pic.twitter.com/3o1eYGkeES

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posted at 07:50:07

i hope u can imagine studytwt ppl gathering in my room at night to chat n play games. i’m playing the piano there alone

posted at 22:31:56

i’m trying to create a Virtual Academy City in a lonely room with bear

posted at 22:02:05

The Other Day I Met a Bear pic.twitter.com/Jd65Y737t3

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posted at 20:39:12

“Frog Song” (Froschgesang) very hard pic.twitter.com/1d3Oyo81uQ

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posted at 19:10:58

Twinkle Twinkle Little Star practicing piano for the first time in 4 yrs. pic.twitter.com/9rBxnHODG8

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posted at 17:34:09