Khayyam also, in Treatise on Demonstrations of Problems in Algebra, produced a complete classification of cubic equations and their geometric solutions.

In his later work, the Treatise on Demonstration of Problems of Algebra, he wrote a complete classification of cubic equations with general geometric solutions found by means of intersecting conic sections .< ref > J.

This is both for the diagnosis of individual patients ( to see whether the patient's experience fits any pre-existing classification ), or for the creation of diagnostic systems ( such as the Diagnostic and Statistical Manual of Mental Disorders or International Statistical Classification of Diseases and Related Health Problems ) which define exactly which signs and symptoms should make up a diagnosis, and how experiences and behaviours should be grouped in particular diagnoses ( e. g. clinical depression, paraphrenia, paranoia, schizophrenia ).

Three works attributed to him are considered spurious: Medical Questions, Physical Problems, and On Fevers.

Problems and Solutions ( Quaestiones ) consists of three books which, although termed " problems and solutions of physical questions ," treat of subjects which are not all physical, and are not all problems.

According to the Foreign & Commonwealth Office, " Problems associated with drug trafficking are potentially the most serious threat to stability in the BVI ".

The most widely used criteria for diagnosing bipolar disorder are from the American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders, the current version being DSM-IV-TR, and the World Health Organization's International Statistical Classification of Diseases and Related Health Problems, currently the ICD-10.

Problems are nonetheless still common when the algorithm has to encompass more than one language.

While the institute is best known for its Millennium Prize Problems, it carries out a wide range of activities, including a postdoctoral program ( ten Clay Research Fellows are supported each year ) and an annual summer school, the proceedings of which are published jointly with the American Mathematical Society.

Problems with remembering, learning and retaining new information are a few of the most common complaints of older adults.

Problems with a country's balance of trade ( or balance of payments ) are often associated with an inappropriate valuation of its currency – that is, its country's foreign exchange rate.

Problems about Lie groups are often solved by first solving the corresponding problem for the Lie algebras, and the result for groups then usually follows easily.

Problems concerning counting and ordering, such as partition enumeration, are studied in combinatorics.

Problems are recorded so they can be reported to

Problems related to the construction of Golomb Rulers are provably shown to be NP-hard, where it is also noted that no known NP-complete problem has similar flavor to finding Golomb Rulers.

Problems have since been resolved, and relations between the countries are good.

Problems that are EXPTIME-complete might be thought of as the hardest problems in EXPTIME.

Tic disorders are defined only slightly differently by the World Health Organization International Statistical Classification of Diseases and Related Health Problems, ICD-10 ; code F95. 2 is for combined vocal and multiple motor tic disorder la Tourette.

: Problems with sound effects can occur when they make it difficult to hear the caller's cues, or are shouted painfully close to other dancers ' ears ; however, in practice such situations are rare.

Problems in coping with one's environment are thought, by Bar-On, to be especially common among those individuals lacking in the subscales of reality testing, problem solving, stress tolerance, and impulse control.

Simmel's most famous works today are The Problems of the Philosophy of History ( 1892 ), The Philosophy of Money ( 1907 ), The Metropolis and Mental Life ( 1903 ), Soziologie ( 1908, inc.

Problems are experienced not only as puzzles but as objects of beauty.

Problems with the voice, nerve or muscular damage, or bleeding from a lacerated blood vessel are rare but serious complications that may occur.

Problems with the Savoyes caused by all the requests for additional payment from the contractors for all the changes were compounded by the requirement for early repairs to the new house.

Problems were dominated by the effects of the Earth's atmosphere, but were compounded by complex optical terms, thermal and gravitational instrument flexures, and the absence of all-sky visibility.

He stated that he acquired many of his writing techniques from three books, " Narrative Technique " by Thomas Uzzell, and " The Only Two Ways to Write a Story " plus " Twenty Problems of the Short-Story Writer ", both by John Gallishaw.

Illustration by Gilbert Wilkinson of Miss Marple from the December 1927 issue of The Royal Magazine and the first-known image of the character ( See The Thirteen Problems # First publication of stories | The Thirteen Problems )

* Calculus Problems and Solutions by D. A. Kouba

It is one of the seven Millennium Prize Problems selected by the Clay Mathematics Institute to carry a US $ 1, 000, 000 prize for the first correct solution.

* The Cruise Missile: Precursors and Problems by Werrell, Kenneth P.

* Dartmoor Prison is mentioned in The Thirteen Problems, a short story collection written by Agatha Christie, and first published in 1932.

*' From Hilbert's Problems to the Future ', lecture by Professor Robin Wilson, Gresham College, 27 February 2008 ( available in text, audio and video formats ).

The International Statistical Classification of Diseases and Related Health Problems ( ICD ), produced by the World Health Organization ( WHO ), is another commonly used manual which includes criteria for mental disorders.

The initial impetus was to make the DSM nomenclature consistent with the International Statistical Classification of Diseases and Related Health Problems ( ICD ), published by the World Health Organization.

" In Reason & Responsibility: Readings in Some Basic Problems of Philosophy, edited by Joel Feinberg and Russ Shafer-Landau, 532 – 540.

Bertrand Russell is famous for distinguishing " knowledge by description " ( a form of knowledge that ) and " knowledge by acquaintance " in Problems of Philosophy.

This work was recently ( 2011 ) translated into the English language by David J. Miller and Adam C McCollum ( edited by Roger Pearse ) and was published under the name " Eusebius of Caesarea: Gospel Problems and Solutions.

* Phase Transitions in Combinatorial Optimization Problems, Section 3: Introduction to Graphs ( 2006 ) by Hartmann and Weigt

Problems in describing the satuatated zone include the characterization of aquifers in terms of flow direction, groundwater pressure and, by inference, groundwater depth ( see: aquifer test ).

* Paideia Problems and Possibilities: A Consideration of Questions Raised by The Paideia Proposal ( 1983 )

" In Reason & Responsibility: Readings in Some Basic Problems of Philosophy, edited by Joel Feinberg and Russ Shafer-Landau, 520-532.

One of the Millennium Prize Problems announced by the Clay Mathematics Institute requires a claimant to produce such a proof.