sigma-constant

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• Sigma (disambiguation) — Sigma may refer to: * Sigma (Σ, σ, or ς), of the Greek alphabetCompanies: * Sigma TV a television channel in Cyprus * Sigma Company, an Australian company. Its main operations include Pharmaceuticals and Pharmacies * Sigma Corporation, a Japanese …   Wikipedia

• Sigma Theta Epsilon — Infobox Fraternity letters=ΣΘΕ name=Sigma Theta Epsilon colors=White, Gold, and Purple flower= symbol= motto=Συνεργοι Θεου Εσμεν Fellow Workers with God crest= founded=1925 birthplace=University of Nebraska type=Christian scope=National address=… …   Wikipedia

• Constant Elasticity of Variance Model — In mathematical finance, the CEV or Constant Elasticity of Variance model is a stochastic volatility model, which attempts to capture stochastic volatility and the leverage effect. The model is widely used by practitioners in the financial… …   Wikipedia

• Sigma Sigma Sigma — Infobox Fraternity letters= ΣΣΣ name= Sigma Sigma Sigma crest= founded= Birth date and age|1898|04|20 birthplace= Longwood College (Farmville, Virginia) type= Social emphasis= scope= National mission= vision= motto= Faithful Unto Death maxim=… …   Wikipedia

• Delta-sigma modulation — Delta sigma (ΔΣ; or sigma delta, ΣΔ) modulation is a method for encoding high resolution or analog signals into lower resolution digital signals. The conversion is done using error feedback, where the difference between the two signals is… …   Wikipedia

• Equilibrium constant — For a general chemical reaction:alpha A +eta B ... ightleftharpoons sigma S+ au T ...the equilibrium constant can be defined by [F.J,C. Rossotti and H. Rossotti, The Determination of Stability Constants, McGraw Hill, 1961.] :K=frac{S ^sigma {{T^ …   Wikipedia

• Embree-Trefethen constant — In number theory, the Embree Trefethen constant is a threshold value labelled β* .For a fixed real β, consider the recurrence x {n+1}=x n pm eta x {n 1} where the sign in the sum is chosen at random for each n independently with equal… …   Wikipedia

• Somos' quadratic recurrence constant — In mathematics, Somos quadratic recurrence constant, named after Michael Somos, who is a researcher in the Georgetown University Mathematics Department, is the number:sigma = sqrt {1 sqrt {2 sqrt{3 cdots} = 1^{1/2};2^{1/4}; 3^{1/8} cdots.,This… …   Wikipedia

• Delta Sigma Phi — ΔΣΦ Founded December 10, 1899 (1899 12 10) (111 years ago) …   Wikipedia

• Phi Sigma Nu — Infobox Fraternity letters = ΦΣΝ name = Phi Sigma Nu crest = founded = Birth date and age|1996|2|13 type = Social birthplace = University of North Carolina at Pembroke flagicon|USA mission = To empower Native Men to collectively engage in… …   Wikipedia

• Stefan–Boltzmann constant — The Stefan–Boltzmann constant (also Stefan s constant), a physical constant denoted by the Greek letter σ, is the constant of proportionality in the Stefan–Boltzmann law: the total energy radiated per unit surface area of a black body in unit… …   Wikipedia