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Package: libghc-semirings-dev (0.6-4 and others)

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two monoids as one, in holy haskimony

Haskellers are usually familiar with monoids and semigroups. A monoid has an appending operation `<>` (or `mappend`), and an identity element, `mempty`. A semigroup has an appending `<>` operation, but does not require a `mempty` element.

A Semiring has two appending operations, `plus` and `times`, and two respective identity elements, `zero` and `one`.

More formally, a Semiring R is a set equipped with two binary relations `+` and `*`, such that:

(R,+) is a commutative monoid with identity element 0,

(R,*) is a monoid with identity element 1,

(*) left and right distributes over addition, and

multiplication by '0' annihilates R.

This package provides a library for the Haskell programming language. See http://www.haskell.org/ for more information on Haskell.

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Download libghc-semirings-dev

Download for all available architectures
Architecture Version Package Size Installed Size Files
alpha (unofficial port) 0.6-3+b1 378.9 kB4,539.0 kB [list of files]
amd64 0.6-4 271.9 kB2,845.0 kB [list of files]
arm64 0.6-4 279.2 kB3,182.0 kB [list of files]
armel 0.6-4+b1 343.3 kB3,526.0 kB [list of files]
armhf 0.6-4+b1 336.2 kB3,486.0 kB [list of files]
hppa (unofficial port) 0.6-4 469.6 kB4,644.0 kB [list of files]
i386 0.6-4+b1 415.0 kB3,604.0 kB [list of files]
ia64 (unofficial port) 0.6-3+b1 396.4 kB7,447.0 kB [list of files]
m68k (unofficial port) 0.6-2+b1 383.4 kB3,627.0 kB [list of files]
mips64el 0.6-4+b1 358.7 kB4,544.0 kB [list of files]
ppc64 (unofficial port) 0.6-4 334.9 kB4,464.0 kB [list of files]
ppc64el 0.6-4 338.6 kB4,101.0 kB [list of files]
riscv64 0.6-4 433.4 kB4,940.0 kB [list of files]
s390x 0.6-4 414.3 kB5,258.0 kB [list of files]
sparc64 (unofficial port) 0.6-4 399.8 kB6,228.0 kB [list of files]
x32 (unofficial port) 0.6-2 471.2 kB4,206.0 kB [list of files]