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1,531–1,560 / 13,083 条 · 第 52 / 437 页
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ELI5: What causes Pi to be irrational?
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A circle has infinite edges, vertices, lines, and no known area other than pi. So basically, a circle is so edgy it's curved.
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- 定义与几何 · 2019-12-24 · 3 分
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TIL that the state of Indiana tried (and failed) to have PI = 3.2 put into law!
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- 计算与算法 · 2010-02-27 · 1 分
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TIL that in 1897, Indiana nearly passed a bill that would've changed the value of pi to 3.2 to make it less "confusing".
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- 证明与性质 · 2012-05-17 · 1 分
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How can irrational numbers like √2 and pi be expressed as lengths if they repeat infinitely?
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Have there been failings of historic approximations to pi that necessitated their improvement?
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Why is the circumference of a circle still 2*pi*r in warped spacetime?
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New approximation of π just dropped
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ELI5: Why doesn't pi or other irrational numbers end?
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ELI5: Why is pi considered irrational if we can measure it physically?
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eli5, is it true that irrational numbers like pi contains every single number combination in it?
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ELI5: Why is π so important when determining the characteristics of a circle or arc?
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ELI5: Does pi really contain every number combination in existence? Does that mean that there are 17 trillion zeros in a row somewhere in pi?
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- 计算与算法 · 2015-11-12 · 1 分
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Why is pi the number that it is? Is this similar to there being 360 degrees in a circle?
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since an irrational number is infinitely long, is it the case that any arbitrary sequence of numbers would appear at some point? (so i could for example find my birthday at some point in pi)? my sense is no, but curious…
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Pi has an infinite amount of numbers, which means every combination of 1-9. Technically, in binary, pi tells every story ever written.
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ELI5: How did mathematicians go about discovering important irrational numbers like pi and e?
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If irrational numbers cannot be expressed as fractions, then why can we measure pi as circumference/diameter?
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If Pi never ends, then we can put any random number pattern and it would go somewhere in Pi.
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If π is defined as the ratio of a circle's circumference to its diameter, do aliens who live in a curved spacetime region have another value for π?
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- 定义与几何 · 2018-05-04 · 1 分
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How do we know that numbers like pi and e are indeed irrational? Is there any mathematical proof that there is no pi=a/b where a isn't zero?
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Largest "integer" not yet found in Pi (LINYFIP)
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found some really simple and convenient approximations of pi! why doesnt nasa use these!?
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Tell HN: Happy Pi-Day
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3/14 is pi month and none of us will live to see the next pi month.
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- 历史与文化 · 2014-03-06 · 1 分
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ELI5: How can the ratio Pi be irrational?
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It’s a tragic failure of our math education that most people think pi is an arbitrary number instead of the ratio of circumference to diameter.
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- 定义与几何 · 2018-10-03 · 1 分
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Why do we know that Pi and E are transcendental numbers, but we aren't sure if Pi^pi or e^e are transcendental or algebraic?
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If you look back far enough into the decimals of an irrational number, such as sqrt(2), could you find another irrational number such as pi?
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