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  2. List of conversion factors - Wikipedia

    en.wikipedia.org/wiki/List_of_conversion_factors

    ≡ 8 ft × 4 ft × 4 ft = 3.624 556 363 776 m 3: cord-foot: ≡ 16 cu ft = 0.453 069 545 472 m 3: cubic fathom: cu fm ≡ 1 fm × 1 fm × 1 fm = 6.116 438 863 872 m 3: cubic foot: ft 3: ≡ 1 ft × 1 ft × 1 ft0.028 316 846 592 m 3: cubic inch: in 3: ≡ 1 in × 1 in × 1 in ≡ 16.387 064 × 10 −6 m 3: cubic metre (SI unit) m 3: ≡ 1 ...

  3. Cyclic redundancy check - Wikipedia

    en.wikipedia.org/wiki/Cyclic_redundancy_check

    The polynomial is written in binary as the coefficients; a 3rd-degree polynomial has 4 coefficients (1x 3 + 0x 2 + 1x + 1). In this case, the coefficients are 1, 0, 1 and 1. The result of the calculation is 3 bits long, which is why it is called a 3-bit CRC. However, you need 4 bits to explicitly state the polynomial. Start with the message to ...

  4. Square (algebra) - Wikipedia

    en.wikipedia.org/wiki/Square_(algebra)

    Squaring is the same as raising to the power 2, and is denoted by a superscript 2; for instance, the square of 3 may be written as 3 2, which is the number 9. In some cases when superscripts are not available, as for instance in programming languages or plain text files, the notations x^2 or x**2 may be used in place of x 2.

  5. Straightedge and compass construction - Wikipedia

    en.wikipedia.org/wiki/Straightedge_and_compass...

    The same set of points can often be constructed using a smaller set of tools. For example, using a compass, straightedge, and a piece of paper on which we have the parabola y=x 2 together with the points (0,0) and (1,0), one can construct any complex number that has a solid construction. Likewise, a tool that can draw any ellipse with already ...

  6. Tetration - Wikipedia

    en.wikipedia.org/wiki/Tetration

    256 (4 4) 1.34078 × 10 154 (4 ... for −1 < x < 0 ... For example, it is not known whether the positive root of the equation 4 x = 2 is a rational number. [citation ...

  7. Octuple-precision floating-point format - Wikipedia

    en.wikipedia.org/wiki/Octuple-precision_floating...

    The minimum strictly positive (subnormal) value is 2 −262378 ≈ 10 −78984 and has a precision of only one bit. The minimum positive normal value is 2 −262142 ≈ 2.4824 × 10 −78913. The maximum representable value is 2 262144 − 2 261907 ≈ 1.6113 × 10 78913.

  8. Curve25519 - Wikipedia

    en.wikipedia.org/wiki/Curve25519

    The protocol uses compressed elliptic point (only X coordinates), so it allows efficient use of the Montgomery ladder for ECDH, using only XZ coordinates. [6] Curve25519 is constructed such that it avoids many potential implementation pitfalls. [7] The curve is birationally equivalent to a twisted Edwards curve used in the Ed25519 [8] [9 ...

  9. Multiply-with-carry pseudorandom number generator - Wikipedia

    en.wikipedia.org/wiki/Multiply-with-carry...

    A linear congruential generator with base b = 2 32 is implemented as + = (+) , where c is a constant. If a ≡ 1 (mod 4) and c is odd, the resulting base-2 32 congruential sequence will have period 2 32.