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'''S4''', '''S 4''', '''Š-4''', '''S.4''' or '''S-4''' may refer to:
'''S4''', '''S 4''', '''Š-4''', '''S.4''' or '''S-4''' may refer to:
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==In arts, hobbies, and entertainment==
* [[Yamaha grand piano]] model S4
* S4 standard, a standard of [[P4 gauge]] with reduced tolerance, a highly accurate 4 mm/1 ft railways modeling format
* ''[[Sonic the Hedgehog 4: Episode I]]'', video game
* [[Super 4 (TV series)|''Super 4'' (TV series)]], animated TV series that began in 2014


==In science and technology==
== People ==
* [[S4 (gamer)]], Gustav Magnusson, Swedish ''Dota 2'' player
===In biology and medicine===
* [[S4 (military)]], a logistics officer within military units
* [[Fourth heart sound]], or S<sub>4</sub>, an abnormal heart sound often indicative of congestive heart failure or cor pulmonale
* [[Sacral spinal nerve 4]], a spinal nerve of the sacral segment
* Fourth [[sacrum]] of the [[vertebral column]], in human anatomy


===In computing===
== Places ==
* [[Samsung Galaxy S4]], a smartphone
* [[County Route S4 (California)]], a road in San Diego, California

** [[Samsung Galaxy S4 Mini]], a mini version of the Samsung Galaxy S4
== Science and mathematics ==
* [[Hibernate (OS feature)|hibernation]] a sleeping state in which the contents of RAM are saved to a hard disk ([[Advanced Configuration and Power Interface]] code)
* [[S (programming language)]] version 4
* [[SG2 Shareable (Fire Control) Software Suite (S4)]]


===In mathematics===
=== Mathematics ===
* S4, a [[Normal modal logic#Common normal modal logics|normal modal logic]]
* [[S4 algebra]], a variety of modal algebras, also called Interior algebra
* [[S4 algebra]], a variety of modal algebras, also called Interior algebra
* [[Tetrahedral symmetry]], the symmetric group S<sub>4</sub>
* [[v:Symmetric_group_S4|Symmetric group S4]] (S<sub>4</sub>), an abstract mathematical group
* [[S4 (modal logic)|'''S4''' (modal logic)]], a normal modal logic


===In other sciences===
=== Chemistry ===
* [[Tetrasulfur]] (S<sub>4</sub>), an allotrope of sulfur
* [[British NVC community S4]]; see [[Swamps and tall-herb fens in the British National Vegetation Classification system]]
* [[S4: Keep away from living quarters]], a safety phrase in chemistry
* [[S4: Keep away from living quarters]], a safety phrase in chemistry
* [[Tetrasulfur]] (S<sub>4</sub>), an allotrope of sulfur
* [[Andarine]] (S-4), a selective androgen receptor modulator and experimental drug


===Other technologies===
=== Biology ===
* [[Fourth heart sound]], or S<sub>4</sub>, an abnormal heart sound often indicative of congestive heart failure or cor pulmonale
:''For uses in transportation, see section [[S4#In Transportation|§ In Transportation]], below.''
* Fourth [[sacrum]] of the vertebral column in human anatomy
* [[Sacral spinal nerve 4]], a spinal nerve of the sacral segment

== Technology ==
* [[S (programming language)]] version 4
* [[Hibernate (OS feature)|Hibernation]] a sleeping state in a computer
* [[SG2 Shareable (Fire Control) Software Suite (S4)]]
* [[Nikon Coolpix S4]], a camera
* [[Nikon Coolpix S4]], a camera
* [[Samsung Galaxy S4]], a smartphone
* [[Sanyo]] DSC-4 and Sanyo [[Xacti]] DSC-4, cameras that have the Exif designation ''S4''
* [[Samsung Galaxy S4 Mini]], a mini version of the Samsung Galaxy S4
* [[Source Four]], an ERS theatre lighting fixture by Electronic Theatre Controls
* [[Samsung Galaxy Tab S4]], an Android tablet


==In transportation==
== Transportation ==
===Air transport===
* [[Letov Š-4]], a 1923 Czechoslovak aircraft
* [[Hydra Technologies Ehécatl]], S4, a Mexican unmanned aerial vehicle
* [[Seibel S-4]], a 1951 helicopter
* [[SATA International]] (IATA airline designator)


===Rail transport===
=== Routes ===
* [[Alco S-4]], a locomotive
* [[S4 (Berlin)]], an S-Bahn line
* [[Prussian S 4]], an 1894 steam locomotives class
* [[S4 (Munich)]], an S-Bahn line
* [[S4 (Nuremberg)]], an S-Bahn line

* [[S4 (Rhine-Main S-Bahn)]], an S-Bahn line
==== Rail lines ====
* [[S4 (Berlin)]], a S-Bahn line
* [[S4 (Rhine-Ruhr S-Bahn)]], an S-Bahn line
* [[S4 (Munich)]], a S-Bahn line in Munich
* [[S4 (St. Gallen S-Bahn)]], an S-Bahn line in Switzerland
* [[S4 (RER Vaud)]], an S-Bahn line in Switzerland
* [[S4 (ZVV)]] line S4, a line of the S-Bahn Zürich in Switzerland
* [[Bremen S-Bahn]] line S4
* [[Bremen S-Bahn]] line S4
* [[Hanover S-Bahn]] line S4
* [[Hanover S-Bahn]] line S4
* [[RheinNeckar S-Bahn]] line S4
* [[Rhine-Neckar S-Bahn]] line S4
* [[Rhein-Ruhr S-Bahn]] line S4
* [[Rhine-Main S-Bahn]] line S4
* [[Rostock S-Bahn]] line S4, a 2010-planned future line
* [[Rostock S-Bahn]] line S4, a 2010-planned future line
* [[Stadtbahn Karlsruhe]] line S4
* [[Stuttgart S-Bahn]] line S4
* [[Stuttgart S-Bahn]] line S4
* [[S4 (ZVV)]] line S4, a line of the S-Bahn Zürich in Switzerland
* S4, a line of the [[Brussels Regional Express Network]]
* [[Stadtbahn Karlsruhe]] line S4


===Road transport===
=== Vehicles ===
* [[Alco S-4]], a locomotive
* [[Audi S4]], a car
* [[Audi S4]], a car
* [[Lancia Delta S4]], a 1984 Group B rally car
* [[Lancia Delta S4]], a 1984 Group B rally car
* [[Hydra Technologies Ehécatl]], S4, a Mexican unmanned aerial vehicle
* [[County Route S4 (California)]], a road in San Diego, California
* [[Letov Š-4]], a 1923 Czechoslovak aircraft

* [[Prussian S 4]], an 1894 steam locomotives class
====Bus Services====
* [[Seibel S-4]], a 1951 helicopter
* [[Stagecoach Gold bus route S4]], a bus route in Oxfordshire, England
* [[Supermarine S.4]], a 1925 British seaplane

===Other forms of transport===
* [[Supermarine S.4]], a 1925 British seaplane
* [[USS S-4 (SS-109)]], a 1919 US Navy submarine
* [[USS S-4 (SS-109)]], a 1919 US Navy submarine


== Groups, companies, organizations ==
==Other uses==
* [[S04]], FC Schalke 04, a German professional sports club
* [[S4 (military)]], a logistics officer within military units
* [[Shift4 Payments]], a U.S. payment processor
* S-4, an alleged U.S. government facility claimed by [[Bob Lazar]] to be investigating alien spacecraft
* [[SATA International]] (IATA airline designator "S4"), Azores Airlines

== Other ==
* [[S4 (classification)]], a disability swimming classification
* [[Form S-4]], a form required by the Securities and Exchange Commission to declare mergers and acquisitions
* [[Form S-4]], a form required by the Securities and Exchange Commission to declare mergers and acquisitions
* S4 standard, a set of standards for model railways ([[P4 gauge]])
* [[S04]], or FC Schalke 04, a German professional sports club

* [[S postcode area]], covering areas of northern Sheffield, England
== See also ==
* [[S4 (Dota player)]], Gustav Magnusson, Swedish ''Dota 2'' player
{{canned search|s4}}
* {{srt|1}}
* [[SSSS (disambiguation)]]
* [[4S (disambiguation)]]
* [[S (disambiguation)]]
* [[4 (disambiguation)]]


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Latest revision as of 17:21, 29 September 2024

S4, S 4, Š-4, S.4 or S-4 may refer to:

People

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Places

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Science and mathematics

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Mathematics

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Chemistry

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Biology

[edit]
  • Fourth heart sound, or S4, an abnormal heart sound often indicative of congestive heart failure or cor pulmonale
  • Fourth sacrum of the vertebral column in human anatomy
  • Sacral spinal nerve 4, a spinal nerve of the sacral segment

Technology

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Transportation

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Routes

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Vehicles

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Groups, companies, organizations

[edit]

Other

[edit]
  • S4 (classification), a disability swimming classification
  • Form S-4, a form required by the Securities and Exchange Commission to declare mergers and acquisitions
  • S4 standard, a set of standards for model railways (P4 gauge)

See also

[edit]