What is Mathematics Subject Classification?
The '''Mathematics Subject Classification''' (MSC) system is an [[alphanumeric]] ordering system for categorizing or arranging mathematical topics, similar to how a library arranges or orders their books on the shelves. The system was invented by the [[American Mathematical Society]] based on two major mathematical publishers: Mathematical Reviews and Zentralblatt MATH. The MSC system is used by many journals of mathematics which ask authors to list the MSC subject codes in their papers when submitted for publication.<ref>{{cite web|title=MSC2020 database|url=https://mathscinet.ams.org/mathscinet/msc/msc2020.html|website=mathscinet.ams.org}}</ref> The 2020 Mathematics Subject Classification is as follows:<ref>{{Cite web|title=MSC2020-Mathematics Subject Classification System|url=https://mathscinet.ams.org/mathscinet/msc/pdfs/classifications2020.pdf|website=mathscinet.ams.org}}</ref> * 00 General and overarching topics; collections * 01 [[History of mathematics|History]] and biography * 03 [[Mathematical logic]] and foundations * 05 [[Combinatorics]] * 06 Order, [[Lattice|lattices]], ordered algebraic structures * 08 General algebraic systems * 11 [[Number theory]] * 12 [[Field (mathematics)|Field theory]] and polynomials * 13 [[Commutative property|Commutative algebra]] * 14 [[Algebraic geometry]] * 15 [[Linear algebra|Linear and multilinear algebra]]; [[Matrix (mathematics)|matrix theory]] * 16 [[Associativity|Associative]] rings and algebras * 17 Nonassociative rings and algebras * 18 [[Category theory]]; [[:en:Homological_algebra|homological algebra]] * 19 [[:en:K-theory|K-theory]] * 20 [[Group theory]] and generalizations * 22 [[:en:Topological_grouphttps://en.wikipedia.org/wiki/Topological_group|Topological groups]], [[:en:Lie_group|Lie groups]] * 26 [[Real analysis|Real functions]] * 28 Measure and integration * 30 Functions of a [[Complex analysis|complex variable]] * 31 [[:en:Potential_theory|Potential theory]] * 32 Several complex variables and [[:en:Analytic_space|analytic spaces]] * 33 Special funct