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高等遊民 if not 高等難民

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高等遊民 if not 高等難民
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My memory of Tachikawa (立川) where I was born

First of all, I don't have any intention to write a novel. I should clearly mention that I am not qualified. Now that my life gets shorter, I have decided to keep a record my life. It was probably 60 years ago when I saw Japanese women occ

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    • Prime Gaps

      <Caution> Anton Pavlovich Chekhov has a novel called "A Dreary Story" 『退屈な話』(Russian: Скучная история), which is not boring at all. I apologize in advance that this article is boring to death🙇. The study of the prime gaps seems to be one o

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      • フェルマーの鸚鵡は… The Parrot's Theorem / Le Théorème du perroquet

        The title of this article comes from a novel by French author Denis Guedj. Its Japanese translation has a title 『フェルマーの鸚鵡はしゃべらない』. A week ago I read the book (in Japanese translation) which I bought about 20 years ago, most likely after my

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        • 35th of May or 32nd of August ?

          Looking at the following post in X (Twitter) telling "this is the entrance to 32nd of August": a memory came back from 55+ years ago all of sudden...I don't have accurate memory, but my mother took me to a hall in Yūrakuchō (有楽町) or somewh

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        • 固定された記事

        My memory of Tachikawa (立川) where I was born

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          Ready to tackle FLT (Fermat's Last Theorem) ?

          Image Credit: The header image has been taken from Quanta Magazine (New Proof Distinguishes Mysterious and Powerful 'Modular Forms') At the end of February this year (2024), I finished (re-)learning Algebraic Geometry using "Algebraic Geom

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          Ready to tackle FLT (Fermat's Last Theorem) ?

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          Ashoro Museum of Paleontology 足寄動物化石博物館

          This article continues from On the way from Ikeda station (池田駅前) to Ashoro station by Tokachi Bus on 6th June 2024, I got off at the bus-stop Ashoro Museum of Paleontology (足寄動物化石#博物館) in order to visit the museum. I have not studied paleo

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          Ashoro Museum of Paleontology 足寄動物化石博物館

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          Atsunai, Urahoro Town, Tokachi District, Hokkaidō (北海道十勝郡浦幌町厚内)

          [Image credit : The header is from 『旅と鉄道』2023年増刊2月号「ローカル線がすべて分かる鉄道地図帳」] This article continues from the following article, but not intended to be a railway travel report: On 30th August 2014, I took a local train of JR Nemuro Main Line (J

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          Atsunai, Urahoro Town, Tokachi District, Hokkaidō (北海道十勝郡浦幌町厚内)

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          8888 आठ हज़ार आठ सौ अट्ठासी

          [Header image via Pinterest] It's 8th August 2024 today. Its expression in YYYYMMDD format would be 20240808. While the number consists of only 0, 2, 4 and 8 in decimal expression, factorization of 20240808 results in 2^3 × 3 × 7 × 211 × 5

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          8888 आठ हज़ार आठ सौ अट्ठासी

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          Pashikuru Pond (馬主来沼)

          [Photo credit : Header image via Super Fantastic Kushiro Lake Akan (釧路・阿寒湖観光公式サイト) ] This article is a continuation of my previous post: The trip had two objectives when I planned: To visit stations between Kushiro and Ikeda of JR Nemuro

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          Pashikuru Pond (馬主来沼)

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          20240729 vs 2024729 (Serendipity)

          [Photo credit: UP5903 photographed by Timothy Tonge via RailPictures.NET] This is a very brief article (if not nonsensical) on prime numbers #素数. It's 29th July 2024 (Mon.) today. When expressed in YYYYMMDD format to signify an 8-digit nu

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          20240729 vs 2024729 (Serendipity)

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          Trip from Kushiro 釧路 to Kitami 北見 via Ikeda 池田, Ashoro 足寄, Rikubetsu 陸別

          [Photo Credit : The header images have been taken from Tetsudō Hobidas photographed by ① 加藤潤様 (2020.01.25) ② 大森裕様 (2022.02.18) both between Atsunai 厚内 & Ombetsu 音別 of JR Nemuro Main Line 根室本線] PrefaceI made a brief tour in Hokkaidō in earl

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          Trip from Kushiro 釧路 to Kitami 北見 via Ikeda 池田, Ashoro 足寄, Rikubetsu 陸別

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          Geometry / Γεωμετρία / ज्यामिति / Երկրաչափություն 幾何学

          I love geometry #幾何学 in general. It's a vast theme, and there's no way to provide a decent explanation on this theme in a brief article. Marcel Berger's book on Riemannian geometry entitled "A Panoramic View of Riemannian Geometry" has over

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          Geometry / Γεωμετρία / ज्यामिति / Երկրաչափություն 幾何学

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          Matsuo Bashō 松尾芭蕉 and cicadas 蝉

          The year 2024 will go down in history as the first major outbreak of periodic cicadas in USA in 221 years owing to simultaneous emerge of 13-year and 17-year broods (#素数 蝉): And the last time these two broods emerged together, it was 1803

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          Matsuo Bashō 松尾芭蕉 and cicadas 蝉

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          Computo, ergo sum

          I came across the following 12 digit number: Before proceeding, the header image is from the following site: https://www.famousscientists.org/rene-descartes/ Unfortunately I'm unable to recollect how I encountered this number, most likely

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          Computo, ergo sum

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          666←PPP←RRR

          The subject is the number everyone hates (or loves)...but I have no doubt that there are countless articles on this particular number #数字 #666. This is a rather recreational article with very little theory except for a reference to a prima

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          666←PPP←RRR

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          37 ३७

          It is often heard that 37 is the most common choice when people are asked to choose a 2-digit random number, but let me clearly mention that this article does not contain the faintest flavor of numerology #数秘 though it is full of numbers #数

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          37 ३७

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