اخبار و کتاب های ریاضی | United States America (US)

Create: 2025-07-01 Update: 2025-07-08 06:55:44

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نَسیء (به عربی: النسیء، به معنی لغوی تأخیر انداختن) یک ویژگی تقویم هجری قمری بود که در قرآن نیز مرتبط با چهار ماه حرام مطرح شده‌است. در عربستان قبل از اسلام از تقویم قمری استفاده می‌شد که در آن هر ۲ یا ۳ سال یکبار یک ماه اضافه وجود داشت. این ماه اضافه باعث می‌شد که فصل‌ها حدوداً در زمان قبلی خود بمانند. وظیفه تعیین این ماه بر عهده قبیله بنی‌کنانه بود. این تعریف از نسیء ابتدا توسط ابو مشعر البلخی و سپس توسط ابوریحان بیرونی و المسعودی و بعضی دانشمندان غربی استفاده شد. از این رو هر دو یا سه سال، ابتدای سال یک ماه به تأخیر می‌افتاد. این نوع تقویم با تقویم عبری (تقویم یهودیان) که در آن نیز هر چند سال یکبار یک ماه اضافه وجود دارد همخوانی دارد. بر اساس نظر ابومشعر، اعراب این روش را از یهودیان یادگرفته بودند. از این رو در آن زمان تقویم اعراب و تقویم یهودیان تقریباً یکسان بود.
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اخبار و کتاب های ریاضی

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اخبار و کتاب های ریاضی

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How to Use Bitcoin?

n the U.S. people generally use Bitcoin as an alternative investment, helping diversify a portfolio apart from stocks and bonds. You can also use Bitcoin to make purchases, but the number of vendors that accept the cryptocurrency is still limited. Big companies that accept Bitcoin include Overstock, AT&T and Twitch. You may also find that some small local retailers or certain websites take Bitcoin, but you’ll have to do some digging. That said, PayPal has announced that it will enable cryptocurrency as a funding source for purchases this year, financing purchases by automatically converting crypto holdings to fiat currency for users. “They have 346 million users and they’re connected to 26 million merchants,” says Spencer Montgomery, founder of Uinta Crypto Consulting. “It’s huge.”

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