Math::NumSeq::Abundant - abundant numbers, greater than sum of divisors River stage one • 1 direct dependent • 1 total dependent

The abundant numbers, being integers greater than the sum of their divisors, 12, 18, 20, 24, 30, 36, ... starting i=1 For example 12 is abundant because its divisors 1,2,3,4,6 add up to 16 which is > 12. This is often expressed as 2*n>sigma(n) where ...

KRYDE/Math-NumSeq-74 - 23 Feb 2020 03:55:27 UTC

Math::SymbolicX::Error - Parser extension for dealing with numeric errors River stage one • 1 direct dependent • 1 total dependent

This module adds numeric error (or uncertainty) support to the Math::Symbolic parser. It does so by extending the parser grammar of the Math::Symbolic module (that is, the one stored in $Math::Symbolic::Parser) with certain special functions that cre...

SMUELLER/Math-SymbolicX-Error-1.01 - 28 Jan 2008 18:34:32 UTC

Math::Prime::FastSieve - Generate a list of all primes less than or equal to $n. Do it quickly. River stage one • 1 direct dependent • 1 total dependent

This module provides an optimized implementation of the Sieve of Eratosthenes, and uses it to return a reference to an array all primes up to any integer specified, within the limitations of addressable memory. Additionally the module provides access...

DAVIDO/Math-Prime-FastSieve-0.19 - 27 Jul 2013 05:38:25 UTC

Math::PlanePath::CCurve - Levy C curve River stage one • 3 direct dependents • 4 total dependents

This is an integer version of the "C" curve by Lévy. "Les Courbes Planes ou Gauches et les Surfaces Composée de Parties Semblables au Tout", Journal de l'École Polytechnique, July 1938 pages 227-247 and October 1938 pages 249-292 <http://gallica.bnf....

KRYDE/Math-PlanePath-128 - 27 Sep 2020 12:53:43 UTC

Math::NumSeq::SqrtEngel - Engel expansion of a square root River stage one • 1 direct dependent • 1 total dependent

This is terms in the Engel expansion of a square root. The Engel expansion approaches the root by a series 1 1 1 sqrt(S) = ---- + --------- + -------------- + ... a[1] a[1]*a[2] a[1]*a[2]*a[3] where each a[i] is chosen to make the term as big as poss...

KRYDE/Math-NumSeq-74 - 23 Feb 2020 03:55:27 UTC

Math::PlanePath::HexArms - six spiral arms River stage one • 3 direct dependents • 4 total dependents

This path follows six spiral arms, each advancing successively, ...--66 5 \ 67----61----55----49----43 60 4 / \ \ ... 38----32----26----20 37 54 3 / \ \ \ 44 21----15---- 9 14 31 48 ... 2 / / \ \ \ \ \ 50 27 10---- 4 3 8 25 42 65 1 / / / / / / / 56 3...

KRYDE/Math-PlanePath-128 - 27 Sep 2020 12:53:43 UTC

Math::Logic::Ternary::Word - fixed-size ternary information compound River stage zero No dependents

Nomenclature Method naming conventions for Math::Logic::Ternary::Word are as follows: Logical operators Elementary logical operators can be applied in two ways to word objects. Words can be treated as single trits, so that only their truth values (re...

MHASCH/Math-Logic-Ternary-0.004 - 01 Aug 2017 21:26:15 UTC

Math::PlanePath::Flowsnake - self-similar path through hexagons River stage one • 3 direct dependents • 4 total dependents

This path is an integer version of the flowsnake curve by William Gosper. A single arm of the curve fills 1/3 of the plane, spiralling around anti-clockwise ever fatter and with jagged self-similar edges....

KRYDE/Math-PlanePath-128 - 27 Sep 2020 12:53:43 UTC

Math::NumSeq::Tetrahedral - tetrahedral numbers i*(i+1)*(i+2)/6 River stage one • 1 direct dependent • 1 total dependent

The tetrahedral numbers, i*(i+1)*(i+2)/6. 0, 1, 4, 10, 20, 35, 56, 84, 120, ......

KRYDE/Math-NumSeq-74 - 23 Feb 2020 03:55:27 UTC

Math::PlanePath::KochPeaks - Koch curve peaks River stage one • 3 direct dependents • 4 total dependents

This path traces out concentric peaks made from integer versions of the self-similar "KochCurve" at successively greater replication levels. 29 9 / \ 27----28 30----31 8 \ / 23 26 32 35 7 / \ / \ / \ 21----22 24----25 33----34 36----37 6 \ / 20 38 5 ...

KRYDE/Math-PlanePath-128 - 27 Sep 2020 12:53:43 UTC

Math::Expression::Evaluator - parses, compiles and evaluates mathematic expressions River stage zero No dependents

Math::Expression::Evaluator is a parser, compiler and interpreter for mathematical expressions. It can handle normal arithmetics (includings powers wit "^" or "**"), builtin functions like sin() and variables. Multiplication "*", division "/" and mod...

MORITZ/Math-Expression-Evaluator-v0.3.2 - 19 Aug 2010 12:01:40 UTC

Math::PlanePath::AR2W2Curve - 2x2 self-similar curve of four patterns River stage one • 3 direct dependents • 4 total dependents

This is an integer version of the AR2W2 curve per Asano, Ranjan, Roos, Welzl and Widmayer "Space-Filling Curves and Their Use in the Design of Geometric Data Structures", Theoretical Computer Science, volume 181, issue 1, pages 3-15, July 1997. And i...

KRYDE/Math-PlanePath-128 - 27 Sep 2020 12:53:43 UTC

Math::PlanePath::VogelFloret - circular pattern like a sunflower River stage one • 3 direct dependents • 4 total dependents

The is an implementation of Helmut Vogel's model for the arrangement of seeds in the head of a sunflower. Integer points are on a spiral at multiples of the golden ratio phi = (1+sqrt(5))/2, 27 19 24 14 11 22 16 6 29 30 9 3 8 1 21 17 . 4 13 25 2 5 12...

KRYDE/Math-PlanePath-128 - 27 Sep 2020 12:53:43 UTC

Math::NumSeq::FractionDigits - the digits of a fraction p/q River stage one • 1 direct dependent • 1 total dependent

The sequence of digits which are a given fraction. For example 1/7 in decimal, being 0.14285714... 1, 4, 2, 8, 5, 7, 1, 4, etc After any integer part, the fraction digits are a repeating sequence. If the fraction is num/den and is in least terms (num...

KRYDE/Math-NumSeq-74 - 23 Feb 2020 03:55:27 UTC

Math::NumSeq::PlanePathDelta - sequence of changes and directions of PlanePath coordinates River stage one • 3 direct dependents • 4 total dependents

This is a tie-in to present coordinate changes and directions from a "Math::PlanePath" module in the form of a NumSeq sequence. The "delta_type" choices are "dX" change in X coordinate "dY" change in Y coordinate "AbsdX" abs(dX) "AbsdY" abs(dY) "dSum...

KRYDE/Math-PlanePath-128 - 27 Sep 2020 12:53:43 UTC

Math::PlanePath::QuintetCurve - self-similar "plus" shaped curve River stage one • 3 direct dependents • 4 total dependents

This path is Mandelbrot's "quartet" trace of spiralling self-similar "+" shape. Benoit B. Mandelbrot, "The Fractal Geometry of Nature", W. H. Freeman and Co., 1983, ISBN 0-7167-1186-9, section 7, "Harnessing the Peano Monster Curves", pages 72-73. 12...

KRYDE/Math-PlanePath-128 - 27 Sep 2020 12:53:43 UTC

Math::PlanePath::ComplexMinus - i-1 and other complex number bases i-r River stage one • 3 direct dependents • 4 total dependents

This path traverses points by a complex number base i-r for given integer r. The default is base i-1 as per Solomon I. Khmelnik "Specialized Digital Computer for Operations with Complex Numbers" (in Russian), Questions of Radio Electronics, volume 12...

KRYDE/Math-PlanePath-128 - 27 Sep 2020 12:53:43 UTC

Math::PlanePath::ToothpickTree - toothpick pattern by rows River stage zero No dependents

This is the "toothpick" sequence pattern expanding through the plane by non-overlapping line segments as per David Applegate, Omar E. Pol, N.J.A. Sloane, "The Toothpick Sequence and Other Sequences from Cellular Automata", Congressus Numerantium, vol...

KRYDE/Math-PlanePath-Toothpick-18 - 11 Oct 2015 10:36:31 UTC

Math::Prime::Util::PrimeArray - A tied array for primes River stage two • 12 direct dependents • 18 total dependents

An array that acts like the infinite set of primes. This may be more convenient than using Math::Prime::Util directly, and in some cases it can be faster than calling "next_prime" and "prev_prime". If the access pattern is ascending or descending, th...

DANAJ/Math-Prime-Util-0.73 - 15 Nov 2018 18:56:14 UTC

Math::SlideRule::PickettPocket - N 3P-ES pocket slide rule River stage zero No dependents

A Pickett Model N 3P-ES pocket slide rule implementation, at present only of the A/B and C/D scales, as used by multiply and other such methods from the parent class. See Math::SlideRule for details on those....

JMATES/Math-SlideRule-1.10 - 12 Mar 2020 17:48:05 UTC

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