In geometry, a simplex is a generalization of the notion of a triangle or tetrahedron to arbitrary dimensions. Specifically, a k-simplex is a k-dimensional polytope which is the convex hull of its k + 1 vertices. More formally, suppose the k + 1 points are affinely independent, which means are linearly independent. Then, the simplex determined by them is the set of points
The desert sparrow is a species of bird in the sparrow family Passeridae, found in the Sahara Desert of northern Africa. A similar bird, Zarudny's sparrow, is found in Central Asia and was historically recognised as a subspecies of the desert sparrow, but varies in a number of ways and is now recognised as a separate species by BirdLife International, the IOC World Bird List, and the Handbook of the Birds of the World Alive.
Herpes simplex viruses include two members of the human Herpesviridae family, Human alphaherpesvirus 1 and Human alphaherpesvirus 2, are the members of Simplexvirus that produce viral infections in the majority of humans. Both HSV-1 and HSV-2 are very common and contagious. They can be spread when an infected person begins shedding the virus. About 67% of the world population under the age of 50 has HSV-1. In the United States more than one-in-six people have HSV-2. Although it can be transmitted through any intimate contact, it is one of the most common sexually transmitted infections.
Ruellia simplex is a species of flowering plant in the acanthus family, Acanthaceae. It is a native of Mexico, the Caribbean, and South America. It has become a widespread invasive plant in Florida, where it was likely introduced as an ornamental before 1933.
Pseudoryzomys simplex, also known as the Brazilian false rice rat or false oryzomys, is a species of rodent in the family Cricetidae from south-central South America. It is found in lowland palm savanna and thorn scrub habitats. It is a medium-sized species, weighing about 50 grams (1.8 oz), with gray–brown fur, long and narrow hindfeet, and a tail that is about as long as the head and body. The IUCN has assessed its conservation status as being of least concern, although almost nothing is known about its diet or reproduction.
The blue-collared parrot also known as simple parrot, lilac-collared song parrot, or lilac-collared Geoffroy's parrot, is a parrot found in the higher elevations of New Guinea. It is found from 500 to 2300 m, mainly between 800 and 1900 m. It is 23–25 cm, mainly green with a black beak, yellow wing bend, blue underwing coverts, and a pale yellow iris. Adult males have a blue collar across upper breast to lower neck above the mantle, adult females have some blue on the rear crown. Juveniles have no blue and a paler bill. There are two subspecies:
Geoffroyus is a genus of parrot in the family Psittaculidae. The three species are found in and around New Guinea, the Solomon Islands, northern Australia and the islands of Indonesia. It contains the following species:
Cristilabrum bubulum is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Camaenidae. This species is endemic to Australia.
Cristilabrum is a genus of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Camaenidae.
Cristilabrum buryillum is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Camaenidae. This species is endemic to Australia.
Cristilabrum grossum is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Camaenidae. This species is endemic to Australia.
Cristilabrum isolatum is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Camaenidae. This species is endemic to Australia.
Cristilabrum monodon is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Camaenidae. This species is endemic to Australia.
Cristilabrum primum is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Camaenidae. This species is endemic to Australia.
Cristilabrum rectum is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Camaenidae. This species is endemic to Australia.
Cristilabrum solitudum is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Camaenidae. This species is endemic to Australia.
Cristilabrum spectaculum is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Camaenidae. This species is endemic to Australia.
Herpes simplex is a viral infection caused by the herpes simplex virus. Infections are categorized based on the part of the body infected. Oral herpes involves the face or mouth. It may result in small blisters in groups often called cold sores or fever blisters or may just cause a sore throat. Genital herpes, often simply known as herpes, may have minimal symptoms or form blisters that break open and result in small ulcers. These typically heal over two to four weeks. Tingling or shooting pains may occur before the blisters appear. Herpes cycles between periods of active disease followed by periods without symptoms. The first episode is often more severe and may be associated with fever, muscle pains, swollen lymph nodes and headaches. Over time, episodes of active disease decrease in frequency and severity. Other disorders caused by herpes simplex include: herpetic whitlow when it involves the fingers, herpes of the eye, herpes infection of the brain, and neonatal herpes when it affects a newborn, among others.
