# Melvil Decimal System: 512.22

## Dewmoji: π¬ > β > + > ? > ?

 0Information174,688βΉοΈ 1Philosophy and Psychology162,098π­ 2Religion 425,567ππ½ 3Social Sciences 883,171π« 4Language118,317π¬ 5Mathematics and Science274,552π¬ 6Technology640,503π‘ 7Arts and Recreation653,495π¨ 8Literature867,539π 9Biography and History552,578πΏ 50General Science23,120π¬ 51Mathematics51,403β 52Astronomy15,251π 53Physics26,404π 54Chemistry15,658β 55Earth sciences & geology24,786π 56Fossils & prehistoric life6,061π 57Life Sciences36,831π 58Botany15,474πΏ 59Zoology59,564πΌ 510General Mathematics12,972β 511General Principles4,552π 512Algebra6,490+ 513Arithmetic4,381π’ 514Trigonometry; topology 1,087π© 515Analysis7,200Ξ£ 516Algebraic geometry3,896V 517Calculus815β« 518Numerical analysis499π» 519Applied Mathematics, Probabilities9,511π 512.0320 512.1Systems of algebra284 512.2Numeric equations; Imaginary expressions606 512.3Algebraic equations; Maxima and minima121 512.4Series; Fractions; Binomial theorem; Taylor's theorem303 512.5Combinatory analysis877 512.6Proportion and progression51 512.7Involution and evolution833 512.8Higher algebra519 512.9Problems and tables920 512.207 512.21Equations, 1st to 4th degrees11 512.22Higher numeric equations96 512.23Indeterminate equations; Diophantin analysis20 512.24Imaginary expressions63 512.257 512.261 512.2711 512.281 512.29 512.2202 512.2211 512.222 512.223 512.224 512.2251 512.226 512.227 512.228 512.229

1922 Edition
Modern language
Emoji

## "Far Friends"

MDS classes with significant recommendations overlap, excluding ones under the same top-level class.

None

## Related tags

@uk (4) algebra (19) coloring (2) games (4) graph theory (5) group theory (38) groups (8) Henriksen (2) in storage (2) JAH (1) Lie groups (1) loft (1) math (84) MATH 311W (6) non-fiction (14) puzzles (7) R (2) Recreation (2) reference (2) RF (2) rubik's cube (8) textbook (7) to-read (2) topic:maths (1) topology (3) undergrad (1) unread (2) work (1)

## What is MDS?

Melvil stands for "Melvil Decimal System," named after Melvil Dewey, the famous librarian. Melvil Dewey invented his Dewey Decimal System in 1876, and early versions of his system are in the public domain.

More recent editions of his system are in copyright, and the name "Dewey," "Dewey Decimal," "Dewey Decimal Classification" and "DDC" are registered trademarked by OCLC, who publish periodic revisions.

LibraryThing's MDS system is based on the classification work of libraries around the world, whose assignments are not copyrightable. MDS "scheduldes" (the words that describe the numbers) are user-added, and based on public domain editions of the system.

The Melvil Decimal System is NOT the Dewey Decimal System of today. Wordings, which are entered by members, can only come from public domain sources. The base system is the Free Decimal System, a public domain classification created by John Mark Ockerbloom. Where useful or necessary, wording comes from the 1922 edition of the Dewey Decimal System. Language and concepts may be changed to fit modern tastes, or to better describe books cataloged. Wordings may not come from in-copyright sources.

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