Theta (UK: /ˈθiːtə/, US: /ˈθeɪtə/; uppercase Θ or ϴ; lowercase θ or ϑ; Ancient Greek: θῆτα thē̂ta [tʰɛ̂ːta]; Modern: θήτα thī́ta [ˈθita]) is the eighth...

Sigma Thêta Pi (ΣΘΠ, STPi), is an international student fraternity based in Quebec, Canada and France, established in 2003. Sigma Thêta Pi was founded...

Theta* is an any-angle path planning algorithm that is based on the A* search algorithm. It can find near-optimal paths with run times comparable to those...

The theta nigrum (lit. 'black theta') or theta infelix (lit. 'unlucky theta') is a symbol of death in Greek and Latin epigraphy. Isidore of Seville notes...

ThetaHealing (also Theta Healing) is the registered trademark for a method of meditation created by Vianna Stibal in 1995. ThetaHealing claims to change...

Theta waves generate the theta rhythm, a neural oscillation in the brain that underlies various aspects of cognition and behavior, including learning,...

Theta Chi (ΘΧ) is an international college fraternity. It was founded on April 10, 1856, at Norwich University then-located in Norwich, Vermont, and has...

In mathematics, theta functions are special functions of several complex variables. They show up in many topics, including Abelian varieties, moduli spaces...

In quantum field theory, the theta vacuum is the semi-classical vacuum state of non-abelian Yang–Mills theories specified by the vacuum angle θ that arises...

Kappa Alpha Theta (ΚΑΘ), commonly referred to simply as Theta, is an international women’s fraternity (the term "sorority" had not yet been invented)...

The Bayer designation θ Orionis (Theta Orionis) is shared by several astronomical objects, located near RA 05h 35m DEC −05° 24′: θ1 Orionis (41 Orionis)...

Theta roles are the names of the participant roles associated with a predicate: the predicate may be a verb, an adjective, a preposition, or a noun. If...

Theta Xi (ΘΞ) is a North American Greek-letter social college fraternity. It was founded at Rensselaer Polytechnic Institute (RPI) on April 29, 1864....

Theta Centauri or θ Centauri, officially named Menkent (/ˈmɛŋkɛnt/), is a single star in the southern constellation of Centaurus, the centaur. With an...

Theta Leonis, Latinized from θ Leonis, formally named Chertan, is a star in the constellation of Leo. With an apparent visual magnitude of +3.324 it is...

Alpha Theta (ΑΘ) is a gender-inclusive Greek house at Dartmouth College. Alpha Theta is a 501(c)(7) non-profit and the chapter house and property are owned...

Delta Sigma Theta Sorority, Inc. (ΔΣΘ) is a historically African American sorority. The organization was founded by college-educated women dedicated to...

{\begin{aligned}&1+\cot ^{2}\theta =\csc ^{2}\theta \\&1+\tan ^{2}\theta =\sec ^{2}\theta \\&\sec ^{2}\theta +\csc ^{2}\theta =\sec ^{2}\theta \csc ^{2}\theta \end{aligned}}}...

Theta is General Motors' automobile platform for compact/mid-size crossover SUVs. The architecture debuted in 2002 with the Saturn Vue and was later used...

Latin theta (uppercase: ϴ, lowercase: θ) is an additional letter of the Latin script, based on the lowercase letter theta from the Greek alphabet. It...

The Lancia Theta (25/35 HP, type 61) is a car which was produced between 1913-1918 by Lancia. The car was a bigger version of the Epsilon model. The car...

The theta model, or Ermentrout–Kopell canonical model, is a biological neuron model originally developed to mathematically describe neurons in the animal...

mathematics, a theta constant or Thetanullwert' (German for theta zero value; plural Thetanullwerte) is the restriction θm(τ) = θm(τ,0) of a theta function...

The theta meson ( θ ) is a hypothetical form of quarkonium (i.e. a flavourless meson) formed by a top quark ( t ) and top antiquark ( t ). As a P-odd...

The Hyundai Theta is a gasoline four-cylinder automobile engine family. The third all-aluminum engine of Hyundai Motor Company debuted in the fourth-generation...

mathematics, particularly q-analog theory, the Ramanujan theta function generalizes the form of the Jacobi theta functions, while capturing their general properties...

={\begin{bmatrix}\cos \theta &-\sin \theta \\\sin \theta &\cos \theta \end{bmatrix}}{\begin{bmatrix}x\\y\end{bmatrix}}={\begin{bmatrix}x\cos \theta -y\sin \theta \\x\sin...

In mathematics, the theta divisor Θ is the divisor in the sense of algebraic geometry defined on an abelian variety A over the complex numbers (and principally...

Theta Antliae (θ Ant, θ Antliae) is the Bayer designation for a binary star in the southern constellation of Antlia. The pair have a combined apparent...

In mathematics, the theta operator is a differential operator defined by θ = z d d z . {\displaystyle \theta =z{d \over dz}.} This is sometimes also called...