17B40 Automorphisms, derivations, other operators

17B45 Lie algebras of linear algebraic groups [See also <a href="#code:14Lxx">14Lxx</a> and <a href="#code:20Gxx">20Gxx</a>]

17B55 Homological methods in Lie (super)algebras

17B60 Lie (super)algebras associated with other structures (associative, Jordan, etc.) [See also <a href="#code:16W10">16W10</a>, <a href="#code:17C40">17C40</a>, <a href="#code:17C50">17C50</a>]

17B65 Infinite-dimensional Lie (super)algebras [See also <a href="#code:22E65">22E65</a>]

17B66 Lie algebras of vector fields and related (super) algebras

17B67 Kac-Moody (super)algebras; extended affine Lie algebras; toroidal Lie algebras

17B69 Vertex operators; vertex operator algebras and related structures

17B80 Applications to integrable systems

17B99 None of the above, but in this section

17Cxx Jordan algebras (algebras, triples and pairs)

17C05 Identities and free Jordan structures

17C50 Jordan structures associated with other structures [See also <a href="#code:16W10">16W10</a>]

17C65 Jordan structures on Banach spaces and algebras [See also <a href="#code:46H70">46H70</a>, <a href="#code:46L70">46L70</a>]

17C99 None of the above, but in this section

17Dxx Other nonassociative rings and algebras

17D10 Mal&apos;cev (Mal&apos;tsev) rings and algebras

17D20 $(\gamma, \delta)$-rings, including $(1,-1)$-rings

17D99 None of the above, but in this section

18-XX Category theory; homological algebra {For commutative rings see <a href="#code:13Dxx">13Dxx</a>, for associative rings <a href="#code:16Exx">16Exx</a>, for groups <a href="#code:20Jxx">20Jxx</a>, for topological groups and related structures <a href="#code:57Txx">57Txx</a>; see also <a href="#code:55Nxx">55Nxx</a> and <a href="#code:55Uxx">55Uxx</a> for algebraic topology}

18-00 General reference works (handbooks, dictionaries, bibliographies, etc.)

18-01 Instructional exposition (textbooks, tutorial papers, etc.)

18-02 Research exposition (monographs, survey articles)

18-03 Historical (must also be assigned at least one classification number from Section 01)