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How to do binary calculation？
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How to convert a binary integer number to a hex string?
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Explicit bijection between $[0,1)$ and $(0,1)$
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Specify a bijection from [0,1] to (0,1].
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Fast way to get a position of combination (without repetitions)
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number theory about index
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Finding the total number of set-bits from 1 to n
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MATLAB: using the find function to get indices of a certain value in an array
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A one line proof that one is zero using Mathematica 10
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How many $N$ digits binary numbers can be formed where $0$ is not repeated
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How can I find an inverse to the Binet formula?
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Cardinality of $[0,1]$
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How to write zero in the unary numeral system
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Counting binary operations on a set with $n$ elements
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Find out number of bits needed to represent a positive integer in binary?
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Rooted Binary Trees and Catalan Numbers