# Melvil Decimal System: 514.224

## Dewmoji: π¬ > β > π© > ? > ? > ?

 0Information174,769βΉοΈ 1Philosophy and Psychology162,176π­ 2Religion 425,946ππ½ 3Social Sciences 883,500π« 4Language118,384π¬ 5Mathematics and Science274,667π¬ 6Technology640,759π‘ 7Arts and Recreation653,832π¨ 8Literature867,919π 9Biography and History552,874πΏ 50General Science23,126π¬ 51Mathematics51,420β 52Astronomy15,262π 53Physics26,422π 54Chemistry15,666β 55Earth sciences & geology24,788π 56Fossils & prehistoric life6,062π 57Life Sciences36,844π 58Botany15,500πΏ 59Zoology59,577πΌ 510General Mathematics12,979β 511General Principles4,551π 512Algebra6,495+ 513Arithmetic4,383π’ 514Trigonometry; topology 1,087π© 515Analysis7,201Ξ£ 516Algebraic geometry3,897V 517Calculus815β« 518Numerical analysis499π» 519Applied Mathematics, Probabilities9,513π 514.0Trigonometry14 514.1Trigonometric functions; General formulas (See 522.7)4 514.2Trigonometric series335 514.3Exponential formulas148 514.4Solution of trigonometric equations1 514.5Plane geometry: solution of plane triangles; analytic20 514.6Spheric trigonometry; General formulas3 514.7Solution of spheric triangles292 514.8Differences of triangles, plane and spheric1 514.9Problems2 514.20 514.21 514.22125 514.2353 514.2457 514.25 514.26 514.27 514.28 514.29 514.220 514.221 514.222 514.22324 514.22487 514.225 514.226 514.227 514.228 514.229 514.22401 514.2241 514.224216 514.2243 514.2244 514.2245 514.2246 514.2247 514.2248 514.2249

1922 Edition
Modern language
Emoji

## "Far Friends"

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

None

## Related tags

algebra (8) Box 1 (3) Box 6 (2) braids (2) chemistry (3) fiber arts (3) General (2) geometry (6) in storage (3) JEM (2) knot theory (57) knots (38) la_4 (4) links (2) manifolds (3) math (165) non-fiction (37) own (3) physics (10) puzzles (3) reference (2) S4U (2) science (16) sheaf theory (2) sheaves (2) textbook (5) theory (3) to-read (2) topology (54) undergrad (2) unread (2)

## 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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