 Closed form

Closed form may refer to:
Maths
 Closedform expression, a finitary expression
 Closed differential form, a differential form α with the property that dα = 0
Poetry
 In poetry analysis, a type of poetry that exhibits regular structure, such as meter or a rhyming pattern;
 Trobar clus, an allusive and obscure style adopted by some 12thcentury troubadours.
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 Mathematical disambiguation
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closed form — noun crystallog : a form whose faces enclose a space (as an octahedron) … Useful english dictionary
Closedform expression — Closed formula redirects here. For closed formula in the sense of a logic formula with no free variables, see Sentence (mathematical logic). In mathematics, an expression is said to be a closed form expression if it can be expressed analytically… … Wikipedia
Closedform formula — A single arithmetic formula obtained to simplify an infinite sum in a general formula. The general formula of bond duration and bond convexity cannot be said closed form as there is an infinite sum over the different time periods. Using a closed… … Wikipedia
closed form solution — A solution to a math problem that can be obtained from simple formulas. Risk modelers and investors can use closed form solutions such as Black Scholes or Vasicek models to value options. Also known as analytical solution. See one factor model.… … Financial and business terms
closedform solution — A solution to a math problem that can be obtained from simple formulas. Risk modelers and investors can use closed form solutions such as Black Scholes or Vasicek models to value options. Also known as analytical solution. See one factor model.… … Financial and business terms
Bond duration closedform formula — Bond duration closed form formula:Dur=frac{Cfrac{(1+ai)(1+i)^m (1+i) (m 1+a)i}{i^2(1+i)^{(m 1+a)+frac{100(m 1+a)}{(1+i)^{(m 1+a)}{P}C = coupon payment per period (half year) i = discount rate per period (half year) a = fraction of a period… … Wikipedia
Bond convexity closedform formula — (Blake and Orszag): Conv= frac{D}{P}egin{Bmatrix}frac{(m 1+a+1)(m 1+a+2)(1/(1+i))^{(m 1+a+2){i}+2frac{(m 1+a+2)(1/(1+i))^{(m 1+a+2)} (1/(1+i))}{i^2}+2frac{(1/(1+i))^{(m 1+a+2)} (1/(1+i)}{i^3}end{Bmatrix}+frac{B}{P}frac{(m 1+a)(m… … Wikipedia
Closed and exact differential forms — In mathematics, especially vector calculus and differential topology, a closed form is a differential form α whose exterior derivative is zero (dα = 0), and an exact form is a differential form that is the exterior derivative of another … Wikipedia
form — formable, adj. formably, adv. /fawrm/, n. 1. external appearance of a clearly defined area, as distinguished from color or material; configuration: a triangular form. 2. the shape of a thing or person. 3. a body, esp. that of a human being. 4. a… … Universalium
Closedeye hallucination — Closed eye hallucinations and closed eye visualizations (CEV) are a distinct class of hallucination. These types of hallucinations generally only occur when one s eyes are closed or when one is in a darkened room. They are a form of phosphene.… … Wikipedia