@irajsafaei اخترشناسی و اندازه گیری | United States America (US)

Create: 2025-07-01 Update: 2025-07-10 11:03:12

همزمان با ۵۹۶ مین سالروز درگذشت جمشید کاشانی، اخترشناس و ریاضیدان برجسته ایرانی، تصحیح و تحقیق کتاب تلخیص المفتاح این ریاضیدان به کوشش محمدرضا عرشی به چاپ رسید.

این کتاب چکیده‌ای از کتاب مفتاح الحساب جمشید کاشانی، از مهم‌ترین کتاب‌های ریاضی سده نهم هجری است که وی پیش از رفتن از کاشان به سمرقند آن را برای نوآموزان در ۳۰ فصل نوشته است. تصحیح کتاب همراه با دیباچه‌ای در سرگذشت جمشید کاشانی ‌و مشخصات نسخه‌ها و متن تصحیح شده است. در کتاب مطالب ریاضیات قدیم با اصطلاحات امروزی و برای کسانی که آشنایی چندانی با نوشتارهای ریاضیات قدیم ندارند به زبان امروزی شرح داده شده است.

جمشید کاشانی یکی از برجسته‌ترین اخترشناسان و ریاضیدانان ایرانی است که بامداد چهارشنبه 10 تیر 808 هجری خورشیدی در رصدخانه سمرقند درگذشت.

دریافت آگاهی بیشتر در وبسایت رسدخانه دانشگاه کاشان
https://uko.kashanu.ac.ir/fa/25902/

صفحه اینستاگرام اخترشناسی و اندازه گیری:
https://instagram.com/irajsafaei2/

کانال یوتیوب:
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کانال تلگرامی اخترشناسی و اندازه گیری
@irajsafaei
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@irajsafaei اخترشناسی و اندازه گیری

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@irajsafaei اخترشناسی و اندازه گیری

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Bitcoin is built on a distributed digital record called a blockchain. As the name implies, blockchain is a linked body of data, made up of units called blocks that contain information about each and every transaction, including date and time, total value, buyer and seller, and a unique identifying code for each exchange. Entries are strung together in chronological order, creating a digital chain of blocks. “Once a block is added to the blockchain, it becomes accessible to anyone who wishes to view it, acting as a public ledger of cryptocurrency transactions,” says Stacey Harris, consultant for Pelicoin, a network of cryptocurrency ATMs. Blockchain is decentralized, which means it’s not controlled by any one organization. “It’s like a Google Doc that anyone can work on,” says Buchi Okoro, CEO and co-founder of African cryptocurrency exchange Quidax. “Nobody owns it, but anyone who has a link can contribute to it. And as different people update it, your copy also gets updated.”

همزمان با ۵۹۶ مین سالروز درگذشت جمشید کاشانی، اخترشناس و ریاضیدان برجسته ایرانی، تصحیح و تحقیق کتاب تلخیص المفتاح این ریاضیدان به کوشش محمدرضا عرشی به چاپ رسید.

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