Section

From Wikipedia, the free encyclopedia

For the sectioning of Wikipedia articles, see Help:Section

Section most commonly refers to:

• A part of something (especially a document)
• A cross section (disambiguation) of some kind

Section may also refer to:

Contents 1 The Arts 2 Biology and Medicine 3 Mathematics 4 Other uses 5 See also

[edit] The Arts

• A section (music) of musical form
• A section of a musical ensemble, usually of like instruments, such as the string section in an orchestra
• Section 31 in the fictional Star Trek universe

[edit] Biology and Medicine

• A cross section (geometry)
• A section (botany), a taxanomic rank below genus
• A Caesarean section, a method of child birth
• Sectioning, involuntary detention for mental treatment in the United Kingdom

[edit] Mathematics

• A cross section (geometry)
• A conic section, a type of geometric curve
• A section of a fiber bundle
• A section of a sheaf
• In homological algebra, a map s: N -> M, given a (surjective) homomorphism h: M -> N, such that sh is the identity on N; see splitting lemma

[edit] Other uses

• A Section (military unit)
• A Section (Scouting), an age grouping of The Scout Association providing age-suitable activities for children
• A section (U.S. land surveying), a one square mile subdivision of a survey township
• The section sign (§), in typography
• An archaeological section, a cross-section of a dig
• A Stratigraphic section, a sequence of layers of rocks in the order they were deposited

[edit] See also

• Part
• Segment (disambiguation)
• Division (disambiguation)