Collapse or its variants may refer to:

Concepts

Collapse (structural) Structural integrity and failure is an aspect of engineering that deals with the ability of a structure to support a designed structural load (weight, force, etc.) without breaking and includes the study of past structural failures in order t ...

Collapse (topology) In topology, a branch of mathematics, a collapse reduces a simplicial complex (or more generally, a CW complex) to a homotopy-equivalent subcomplex. Collapses, like CW complexes themselves, were invented by J. H. C. Whitehead. Collapses find ap ...

, a mathematical concept *

Collapsing manifold In Riemannian geometry, a collapsing or collapsed manifold is an ''n''-dimensional manifold ''M'' that admits a sequence of Riemannian metrics ''g'i'', such that as ''i'' goes to infinity the manifold is close to a ''k''-dimensional space, wh ...

* Collapse, the action of collapsing or telescoping objects * Collapsing user interface elements ** Accordion (GUI) -- collapsing list items **

Code folding Code or text folding, or less commonly holophrasting, is a feature of some graphical user interfaces that allows the user to selectively hide ("fold") or display ("unfold") parts of a document. This allows the user to manage large amounts of tex ...

-- collapsing subsections of programs or text **

Outliner An outliner (or outline processor) is a specialized type of text editor (word processor) used to create and edit outlines, which are text files which have a tree structure, for organization. Textual information is contained in discrete sections c ...

-- supporting folding and unfolding subsections *

Ecosystem collapse An ecosystem is considered collapsed when its unique biotic (characteristic biota) or abiotic features are lost from all previous occurrences. Ecosystem collapse causes ecological collapse within a system; essentially altering its stability, re ...

Ecological collapse Ecological collapse refers to a situation where an ecosystem suffers a drastic, possibly permanent, reduction in carrying capacity for all organisms, often resulting in mass extinction. Usually, an ecological collapse is precipitated by a disastr ...

Economic collapse Economic collapse, also called economic meltdown, is any of a broad range of bad economic conditions, ranging from a severe, prolonged depression with high bankruptcy rates and high unemployment (such as the Great Depression of the 1930s), to a ...

Gravitational collapse Gravitational collapse is the contraction of an astronomical object due to the influence of its own gravity, which tends to draw matter inward toward the center of gravity. Gravitational collapse is a fundamental mechanism for structure formatio ...

creating astronomical objects *

Societal collapse Societal collapse (also known as civilizational collapse) is the fall of a complex human society characterized by the loss of cultural identity and of socioeconomic complexity, the downfall of government, and the rise of violence. Possible cause ...

** Dissolution of the Soviet Union, the collapse of Soviet federalism ** State collapse *

Wave function collapse In quantum mechanics, wave function collapse occurs when a wave function—initially in a superposition of several eigenstates—reduces to a single eigenstate due to interaction with the external world. This interaction is called an ''obse ...

, in physics

Medicine and biology

In medicine, collapse can refer to various forms of

transient loss of consciousness Transient loss of consciousness (TLOC) is a brief period of un consciousness which resolves spontaneously. It may be traumatic—as in a concussion A concussion, also known as a mild traumatic brain injury (mTBI), is a head injury that tempor ...

such as syncope, or loss of postural

muscle tone In physiology, medicine, and anatomy, muscle tone (residual muscle tension or tonus) is the continuous and passive partial contraction of the muscles, or the muscle's resistance to passive stretch during resting state.O’Sullivan, S. B. (2007). ...

without loss of

consciousness Consciousness, at its simplest, is sentience and awareness of internal and external existence. However, the lack of definitions has led to millennia of analyses, explanations and debates by philosophers, theologians, linguisticians, and scien ...

. It can also refer to: * Circulatory collapse *

Lung collapse A pneumothorax is an abnormal collection of air in the pleural space between the lung and the chest wall. Symptoms typically include sudden onset of sharp, one-sided chest pain and shortness of breath. In a minority of cases, a one-way valve ...

Hydrophobic collapse Hydrophobic collapse is a proposed process for the production of the 3-D conformation adopted by polypeptides and other molecules in polar solvents. The theory states that the nascent polypeptide forms initial secondary structure ( ɑ-helices and ...

protein folding Protein folding is the physical process by which a protein chain is translated to its native three-dimensional structure, typically a "folded" conformation by which the protein becomes biologically functional. Via an expeditious and reprodu ...

Art, entertainment and media

Literature

* '' Collapse: How Societies Choose to Fail or Succeed'', a book by Jared Diamond * ''Collapse'' (journal), a journal of philosophical research and development published in the United Kingdom

Film

* ''Collapse'' (film), a 2009 documentary directed by Chris Smith and starring

Michael Ruppert Michael Craig Ruppert (February 3, 1951 – April 13, 2014) was an American writer and musician, Los Angeles Police Department officer, investigative journalist, political activist, and peak oil awareness advocate known for his 2004 book ''Crossi ...

* ''Collapse'', a 2010 documentary film based on the book '' Collapse: How Societies Choose to Fail or Succeed''

Games

* ''Collapse'' (2008 video game), an action game released in 2008 for Microsoft Windows * ''

Collapse! ''Collapse!'' is a series of tile-matching puzzle video games by GameHouse, a software company in Seattle, Washington. In 2007, ''Super Collapse! 3'' became the first game to win the Game of the Year at the inaugural Zeebys. The series has be ...

'', a 1999 series games created by GameHouse * Collapse, a fictional event in the computer game ''Dreamfall'' * The Collapse (''Deus Ex''), a fictional event within the plot of the computer game ''Deus Ex'' and its sequel ''Deus Ex: Invisible War''

Music

Albums

* ''Collapse'' (Across Five Aprils album), 2006 * ''Collapse'' (Deas Vail album), 2006 * '' Collapse EP'', 2018 record by Aphex Twin

Songs

* "Collapse" (Soul Coughing song), 1996 * "Collapse" (Saosin song), 2006 * "Collapse" (Imperative Reaction song), 2006 * "Collapsed" (Aly & AJ song), 2005