Question

Representing all rational numbers between $\dfrac{1}{2}$ and $1$

score 799 · Answer 1 · 2021-03-28 12:40:43

799

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Representing all rational numbers between $\dfrac{1}{2}$ and $1$

Published on 28 Mar 2021 - 12:40

score 68 · Answer 2 · 2026-03-26 22:16:21

68

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OEIS sequence A308092: run lengths of bits and run lengths of an auxiliary sequence.

Published on 26 Mar 2026 - 22:16

score 39 · Answer 3 · 2021-04-12 08:23:45

If $b_nb_{n-1} \cdots b_0$ is the binary representation of natural $x$, and if $(b_0-b_1+b_2-b_3+\cdots+(-1)^nb_n)=0\pmod3$, then $x=0\pmod3$

score 61 · Answer 4 · 2021-04-14 11:23:32

61

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Defining $y^2$ in sums of $2^x$

Published on 14 Apr 2021 - 11:23

score 65 · Answer 5 · 2026-04-02 09:39:41

65

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Is a binary sequence generated by repetition and subsequent digit flipping periodic?

Published on 02 Apr 2026 - 9:39

score 383 · Answer 6 · 2021-04-23 22:05:55

383

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Is there a rule or equation to convert decimal to binary without recursion

Published on 23 Apr 2021 - 22:05

score 48 · Answer 7 · 2026-04-03 11:08:07

48

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How to calculate the right-most digits of $\lim_{n\to\infty}\sum_{k=0}^n k!$

Published on 03 Apr 2026 - 11:08

score 59 · Answer 8 · 2026-03-30 18:07:29

59

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Find a sum of all numbers in the list which have zero in the high-order digit.

Published on 30 Mar 2026 - 18:07

score 69 · Answer 9 · 2026-02-23 18:40:12

69

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Hamming distance between consecutive primes

Published on 23 Feb 2026 - 18:40

score 78 · Answer 10 · 2026-04-01 14:05:21

78

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Draw samples from binary, mutually dependent joint distributions

Published on 01 Apr 2026 - 14:05

score 56 · Answer 11 · 2026-04-03 05:46:56

56

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Coding Theory: Irreducible Polynomial divides x^m+1

Published on 03 Apr 2026 - 5:46

score 135 · Answer 12 · 2026-03-30 07:04:09

135

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Does "Binary Logarithm" means "Binary Number System" in Computer Science?

Published on 30 Mar 2026 - 7:04

score 467 · Answer 13 · 2021-06-05 21:30:46

467

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Fast question - Number of binary relations on a $3$-element set

Published on 05 Jun 2021 - 21:30

score 44 · Answer 14 · 2026-04-02 11:15:24

44

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Does the decimal expansion of a (fractional) number always contain less digits than its binary expansion?

Published on 02 Apr 2026 - 11:15

score 48 · Answer 15 · 2021-06-15 15:40:43

48

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Invertibility of an $n$ by $n$ binary matrix in which each column has exactly $b$ ones

Published on 15 Jun 2021 - 15:40

List Question

Representing all rational numbers between $\dfrac{1}{2}$ and $1$

OEIS sequence A308092: run lengths of bits and run lengths of an auxiliary sequence.

If $b_nb_{n-1} \cdots b_0$ is the binary representation of natural $x$, and if $(b_0-b_1+b_2-b_3+\cdots+(-1)^nb_n)=0\pmod3$, then $x=0\pmod3$

Defining $y^2$ in sums of $2^x$

Is a binary sequence generated by repetition and subsequent digit flipping periodic?

Is there a rule or equation to convert decimal to binary without recursion

How to calculate the right-most digits of $\lim_{n\to\infty}\sum_{k=0}^n k!$

Find a sum of all numbers in the list which have zero in the high-order digit.

Hamming distance between consecutive primes

Draw samples from binary, mutually dependent joint distributions

Coding Theory: Irreducible Polynomial divides x^m+1

Does "Binary Logarithm" means "Binary Number System" in Computer Science?

Fast question - Number of binary relations on a $3$-element set

Does the decimal expansion of a (fractional) number always contain less digits than its binary expansion?

Invertibility of an $n$ by $n$ binary matrix in which each column has exactly $b$ ones

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