Simplex (disambiguation)

Simplex is Latin for "simple, pure, plain" and may refer to:

Mathematics

• Pascal's simplex, a version of Pascal's triangle of more than three dimensions
• Simplex, a term in geometry meaning an n-dimensional analogue of a triangle
  • 10-simplex, a hendecaxennon (self-dual regular 10-polytope)
  • Omnitruncated 6-simplex or omnitruncated heptapeton (uniform 6-polytope)
• Simplex algorithm, a popular algorithm for numerical solution of linear programming problems
• Simplex graph
• Simplex noise, a method for constructing an n-dimensional noise function
• Simplex plot, a ternary plot used in game theory

Companies and trade names

• American Simplex, an American automobile made in Mishawaka, Indiana, USA
• Crane-Simplex, a defunct luxury car manufacturer in New York, USA at the start of the 20th century
• Simplex (automobile), a car manufacturer from New York
• Simplex (bicycle), a French bicycle derailleur brand
• Simplex Manufacturing Corporation, an American manufacturer of motorcycles in Louisiana from 1935 to 1975
• Simplex, a trade name used by British railway locomotive manufacturers, The Motor Rail & Tramcar Co Ltd
• Simplex, the trade name of the swinging-tray record changer used in Wurlitzer jukeboxes, produced from the 1930s to the 1950s.
• Simplex Time Recorder Company, the former name of a brand of fire protection products, now known as SimplexGrinnell
• Sheffield-Simplex, a British vehicle manufacturer operating 1907–1920

Technology

• Bergmann Simplex, an early 20th-century, German–made handgun
• Simplex circuit provides transmission in one direction only
• Simplex communication, a one-way communications channel
• Simplex signaling, signalling in which two conductors are used for a single channel
• In amateur radio, using a single frequency for transmit and receive instead of a repeater
• Simplex, a brand name used by the Motor Rail company, early builders of small railway locomotives powered by petrol engines
• Simplex lock, a five-digit push-button mechanical lock

Biology

Simplex is commonly used in binomial names.

Latin binomial abbreviations for species

• Acacia simplex, perennial climbing tree native to islands in the western part of the Pacific Ocean
• Acartia simplex, a species of marine copepod belonging to the family Acartiidae
• Achaea simplex, a species of moth of the Noctuidae family
• Acrodontium simplex, ascomycete fungus that is a plant pathogen
• Aloeides simplex, a butterfly of the Lycaenidae family
• Amitostigma simplex, a species of plant in the Orchidaceae family
• Anabrus simplex or Mormon cricket, large insect that can grow to almost three inches in length
• Anatrachyntis simplex, moth in the Cosmopterigidae family
• Anomia simplex, or the common jingle shell, a species of bivalve mollusc in the family Anomiidae
• Anthreptes simplex or Plain Sunbird, a species of bird in the Nectariniidae family
• Argiope simplex or Argiope trifasciata, also called banded garden spider in the USA, a species of spider found around the world
• Arinia simplex, a species of small land snails with an operculum, terrestrial gastropod mollusks in the family Diplommatinidae
• Asconiscus simplex, the only species in the genus Asconiscus, family of marine isopod crustaceans in the suborder Cymothoida
• Avatha simplex, a species of moth of the Noctuidae family
• Azygophleps simplex, moth in the Cossidae family
• Betta simplex, a species of fish in the Osphronemidae family
• Bittium simplex, a species of sea snail, a marine gastropod mollusk in the family Cerithiidae
• Blanfordia simplex, a species of land snail that has an operculum, a terrestrial gastropod mollusk in the family Pomatiopsidae
• Boucardicus simplex, a species of land snail with an operculum, a terrestrial gastropod mollusk in the family Cyclophoridae
• Branchinella simplex, a species of crustacean in the family Thamnocephalidae
• Brassaiopsis simplex, a species of plant in the Araliaceae family
• Buddleja simplex, probably extinct, as no record of it has been made for nearly 200 years
• Bulbophyllum simplex, a species of orchid in the genus Bulbophyllum
• Calamonastes simplex or Grey Wren Warbler, a species of bird in the Cisticolidae family
• Calliostoma simplex, a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae
• Chilo simplex or Chilo suppressalis, moth of the Crambidae family
• Chlaenius simplex, a ground beetle in the large and diverse Chlaenius genus
• Chlorocichla simplex or Simple Greenbul, a species of songbird in the Pycnonotidae family
• Cirsonella simplex, minute sea snail, a marine gastropod mollusc in the family Turbinidae
• Coelogyne simplex, a species of orchid
• Coleophora simplex, moth of the Coleophoridae family
• Columba simplex or Lemon Dove or Cinnamon Dove, a bird species in the pigeon family (Columbidae)
• Cristilabrum simplex, a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Camaenidae
• Cyligramma simplex, moth of the Noctuidae family
• Digamasellus simplex, mite in the family Digamasellidae
• Echium simplex (Tower of jewels), herbaceous biennial plant up to 3 m in height on the island of Tenerife mainly in Macizo de Anaga
• Enatimene simplex, a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails
• Endotricha simplex, a species of snout moths in the genus Endotricha
• Eriogaster simplex or Panacela lewinae is a moth of the Eupterotidae family
• Eulimella simplex, a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies
• Eulophota simplex, a species of snout moths in the genus Eulophota
• Firmiana simplex, the Chinese parasol tree or wutong, an ornamental plant or tree of the cacao, or chocolate family Sterculiaceae of the order Malvales, native to Asia
• Gamasellus simplex, in the genus of mites in the family Ologamasidae
• Gentianopsis simplex, a species of flowering plant in the gentian family known by the common name oneflower fringed gentian
• Geoffroyus simplex, Blue-collared Parrot, Simple Parrot, Lilac-collared Song Parrot, or Lilac-collared Geoffroy's Parrot, found in New Guinea
• Halolaelaps simplex, family of mites in the order Mesostigmata
• Hemistola simplex, moth of the Geometridae family
• Hesperomys simplex, a species of rodent in the family Cricetidae from south-central South America
• Holcobius simplex, beetle species in the family Anobiidae
• Hyla simplex, a species of frog in the Hylidae family
• Janoliva simplex, a species of sea snail, a marine gastropod mollusk in the family Olividae, the olives
• Melanophryniscus simplex, a species of toad in the Bufonidae family
• Mirosternus simplex, beetle species in the family Anobiidae
• Mohnia simplex, a species of sea snail, a marine gastropod mollusk in the family Buccinidae, the true whelks
• Myrmothera simplex or Tepui Antpitta or Brown-breasted Antpitta, a species of bird in the Formicariidae family
• Natica simplex, a species of predatory sea snail, a marine gastropod mollusk in the family Naticidae, the moon snails
• Nemiana simplex, the only species in Nemiana, a genus of simple, sessile organisms
• Obesotoma simplex, a species of sea snail, a marine gastropod mollusk in the family Mangeliidae
• Oenocarpus simplex, a species of flowering plant in the Arecaceae family
• Opisthostoma simplex, a species of minute land snail with an operculum, a terrestrial gastropod mollusk in the family Diplommatinidae
• Oroplema simplex, a species of moth of the Uraniidae family
• Ovatis simplex, a species of crabs in the family Xanthidae, the only species in the genus Ovatis
• Pachycephala simplex or Grey Whistler, a species of bird in the Pachycephalidae family
• Paradiaptomus simplex, a species of copepod in the family Diaptomidae
• Passer simplex or Desert Sparrow, a bird of the sparrow family Passeridae
• Penicillaria simplex, moth of the Noctuidae family
• Pepta simplex, a species of sea snail, a marine gastropod mollusk in the family Cancellariidae, the nutmeg snails
• Phaetusa simplex or Large-billed Tern, a species of tern in the Sternidae family
• Piculus simplex or Rufous-winged Woodpecker, a species of bird in the Picidae family
• Pleomeris simplex or Puccinia hordei, plant pathogen
• Plusia simplex or Anagrapha falcifera, a moth of the Noctuidae family
• Pogoniulus simplex or Green Tinkerbird, a species of bird in the Lybiidae family
• Protanthea simplex, a species of sea anemone found in deep water off the coasts of north west Europe
• Proutiella simplex, moth of the Notodontidae family
• Pseudopanax simplex, a species of evergreen plant
• Pseudotriccus simplex or Hazel-fronted Pygmy Tyrant, a species of bird in the Tyrannidae family
• Puccinellia simplex, a species of grass known by the common names western alkali grass and California alkali grass
• Pycnonotus simplex or Cream-vented Bulbul, a species of songbird in the Pycnonotidae family
• Pyrgulopsis simplex or Fossil springsnail, a species of minute freshwater spring snails, aquatic gastropod mollusks or micromollusks in the family Hydrobiidae
• Rhadinosticta simplex or Rhadinosticta, a species of damselfly in the family Isostictidae
• Rhamphomyia simplex, a species of dance fly, in the fly family Empididae
• Rhytipterna simplex or Greyish Mourner, a species of bird in the Tyrannidae family
• Sarcoglanis simplex, a species of catfish (order Siluriformes) of the family Trichomycteridae, and the only species of the genus Sarcoglanis
• Schinia simplex, moth of the Noctuidae family
• Schrankia simplex or Schrankia altivolans, moth of the Noctuidae family
• Serrata simplex, a species of sea snail, a marine gastropod mollusk in the family Marginellidae, the margin snails
• Speiredonia simplex, a species of moth of the Noctuidae family
• Sporophila simplex or Drab Seedeater, a species of bird in the Thraupidae family
• Stirlingia simplex, plant endemic to Western Australia
• Sukashitrochus simplex or Sukashitrochus morleti, a species of sea snail, a marine gastropod mollusk in the family Scissurellidae
• Thesprotia simplex, common name Grass Mantis, is a species of praying mantis found in Brazil
• Tropodiaptomus simplex, copepod in the family Diaptomidae
• Tubularia simplex, or Oaten Pipes Hydroid, a species of large hydroid native to the northeast Atlantic Ocean, the North Sea, Norwegian Sea, and the English Channel
• Urophora simplex, a species of tephritid or fruit flies in the genus Urophora of the family Tephritidae
• Utricularia simplex, commonly known as bluecoats, is a very small perennial carnivorous plant that belongs to the genus Utricularia
• Vriesea simplex, a species of the genus Vriesea

Other

• Mercedes Simplex, an automobile model produced between 1902 and 1909
• Herpes simplex is a viral disease caused by Herpes simplex viruses
• Simplex printing, a printing technique that is contrast to duplex printing