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2. Cosine similarity - Wikipedia

   en.wikipedia.org/wiki/Cosine_similarity

   In data analysis, cosine similarity is a measure of similarity between two non-zero vectors defined in an inner product space. Cosine similarity is the cosine of the angle between the vectors; that is, it is the dot product of the vectors divided by the product of their lengths. It follows that the cosine similarity does not depend on the ...

3. Division (mathematics) - Wikipedia

   en.wikipedia.org/wiki/Division_(mathematics)

   In terms of partition, 20 / 5 means the size of each of 5 parts into which a set of size 20 is divided. For example, 20 apples divide into five groups of four apples, meaning that "twenty divided by five is equal to four". This is denoted as 20 / 5 = 4, or ⁠ 20 / 5 ⁠ = 4. [2] In the example, 20 is the dividend, 5 is the divisor, and 4 is ...

4. Bessel function - Wikipedia

   en.wikipedia.org/wiki/Bessel_function

   n (x) with n = −0.5 in the complex plane from −2 − 2i to 2 + 2i Plot of the Hankel function of the second kind H (2) n ( x ) with n = −0.5 in the complex plane from −2 − 2 i to 2 + 2 i Another important formulation of the two linearly independent solutions to Bessel's equation are the Hankel functions of the first and second kind ...

5. Repeating decimal - Wikipedia

   en.wikipedia.org/wiki/Repeating_decimal

   The period of ⁠ c / k ⁠, for c coprime to k, equals the period of ⁠ 1 / k ⁠. If k = 2 a ·5 b n where n > 1 and n is not divisible by 2 or 5, then the length of the transient of ⁠ 1 / k ⁠ is max(a, b), and the period equals r, where r is the multiplicative order of 10 mod n, that is the smallest integer such that 10 r ≡ 1 (mod n).

6. Omega constant - Wikipedia

   en.wikipedia.org/wiki/Omega_constant

   It is the value of W(1), where W is Lambert's W function. The name is derived from the alternate name for Lambert's W function, the omega function. The numerical value of Ω is given by Ω = 0.56714 32904 09783 87299 99686 62210... (sequence A030178 in the OEIS). 1/Ω = 1.76322 28343 51896 71022 52017 76951... (sequence A030797 in the OEIS).

7. Elliott 803 - Wikipedia

   en.wikipedia.org/wiki/Elliott_803

   The inner loop (locations 2 and 3) packs 5-bit characters into the accumulator until overflow occurs. Thus a 39 bit word is formed of eight 5 bit characters. The most significant bit of the first character is discarded but must be a 1 (unless the next bit is a 1), in order to provoke arithmetic overflow (a change of the sign bit).